12kw Electric Combi Boiler

12kW Electric combi boiler – What are your options?

An 12kW electric combi boiler can be the perfect solution to your heating and hot water demands for a small house or flat. An electric combination boiler does away with the need for stored hot water but with this comes some things you need to be aware of to decide if a combination electric boiler is right for your application.

Here Flexiheat UK, we have a couple of options for your 12kw electric combi boiler requirements. We do a range of 12kw electric combi boilers, that can either be run off a 240 Volt / Single Phase electric supply (the most common household electrical supply voltage for the UK and Ireland) or 415 Volt / Three phase electrical supply. The term “combi” is just an abbreviation for the word “combination” and when used in the context of a 12kw electric combi boiler, this means that the electric boiler will not only do the central heating requirements, but also produce domestic hot water, for your hot water taps within your property or flat.

12kw electric combi boiler; 12kw electric combination boilers;

12kW Electric Combination Boiler Efficiency & Benefits

None of our 12kW electric combination boilers emit gases or direct pollution when operating as they are not using fuels such as natural gas, LPG gas or Oil and therefore there is no risk of leaks or explosions. All of our electric combination boilers are highly efficient at 99%, and come with a LCD control panel, that allows you to have 3 daily programmes (i.e. on/off periods), and are fitted with the latest ErP low energy rated heating pumps and come with a 7 litre system expansion vessel. The product benefits and features are –  

  • They can be used with a wet underfloor heating system
  • They can be used on a a traditional wet central heating system with radiators
  • They can be used in conjunction with solar heating systems
  • Fully modulating operation in 3 steps – i.e. 1/3rd power ,2/3rd’s power or full power output
  • A frost / freezing protection system – If the temperature of the water inside the 12kw electric combi boiler is under 5°C, the pump and heating elements will operate to bringing the water temperature up to 35 Degrees Centigrade, ensuring that the boiler is protected against freezing and any potential damage.

Domestic Hot Water Performance

One of the most important factors in relation to electric combination boilers is their Domestic Hot Water ( sometimes referred to as DHW) performance. It is very important to appreciate that the hot water flow rates for combination boilers are not going to comparable to a DHW storage cylinder, but on the plus side your not going to be wasting energy and money heating up a large volume of water that you may or may not use through the day. With a combi boiler, you are only heating the hot water that you require, when you use it, and these savings can be significant. So please bear this main advantage in mind.The temperature of this domestic hot water can be controlled between 35 to 55 degrees centigrade.

ModelPower           (kW)Dimensions  H x W x D   (mm)Weight          (kg)Expansion Vessel Volume    (Ltrs)Δt  = 25°C Hot Water Amount  (Ltrs/min)
12EDM    12700 x 400 x 250    26   76.9

These days water efficient taps and showers should have the following flow rates –

Kitchen taps – flow rates of between 4 to 6 litres per minute

Showers – flow rates of 6 litres per minute

You have to be careful when it comes to showers, as some of the “drench” type showers can be 18 litre or more per minute.

So our 12kW electric combi boiler will produce 6.9 litres a minute at what is called a delta “T” or in plain English , a temperature rise of 25 Degrees C . This means that if the incoming mains water is at 10 degrees C, it will produce 6.9 litres of water at a final temperature of 35 degrees C, thus raising the water temperature by 25 degrees C.

If the incoming water temperature is lower or the desired water temperature is higher ( remembering that this combi boiler will produce water up to 55 degrees C  maximum) then the flow rate will be effected.

Electrical Consumption Details  – including fuse & cable requirements :-

The following information is relevant when this electric combination boiler is wired up to a 240 Volt , Single Phase electrical supply –

ModelOutput in kWDraw Current- AmpsFused & Residual Current Device- AmpsCable Section
EDM12121* 54.61* 633*10mm

The full brochure for this 12kw electric combi boiler and the rest of our range as we also do three phase electric versions that go up to 48kW of output, please download our brochure here – 

Download the Flexiheat UK Brochure for Electric Combination Boilers

12kW Electric combi boilers for sale UK & Ireland

Should you require anymore assistance or information on our 12kW Electric Combi Boiler / 12kW Electric Combination Boilers , please don’t hesitate to contact our sales team on 01202 822221 or click here for our email contact form.

10 kw Electric Boiler

10 kW Electric boiler – What are your options ?

At Flexiheat UK, we have various options for your 10 kw electric boiler requirements. We do a full range of 10 kw electric central heating boilers, that can either be run off a 240 Volt / Single Phase electric supply ( the most common household electrical supply voltage for the UK and Ireland ) or 415 Volt / Three phase electrical supply.

10 kw electric boiler; 9kw electric central heating boiler;

Our closest output to a 10 kw electric boiler is our model ” FHEL9″ which is actually just under that value at 9 kw of output, but normally most home heating systems are oversized,as they normally take into account the worst case scenario of it being minus 5 Degrees C, which in the UK winter is vary rarely seen to be honest, thus we’d be very confident that a 9 kW output electric central heating boiler would suffice for your requirements

However should you require 10kW of output, then we do our model FHEL14 which is rated to an output of 13.5 kW, which is slightly over in output value, but please remember these electric wet central heating boilers have a modulating output, which means it can modulate down to 10 kW of output – for more information on this model and our full range please see this page – https://www.flexiheatuk.com/product/electric-central-heating-boilers/

10 kW Electric Boiler Efficiency & Benefits

Our electric boilers are 99.5% efficient and benefit from well arranged touch display and control panel for our FHEL9 model.This touch screen ensures both simple and intuitive control of the boiler is achieved.

Fluent regulation in low power output steps of just 1 kW (1,000 Watts ) ensure that the heating load requirement is appropriately matched,also ensuring even greater heating efficiency to the wet central heating electric boiler system.

The modular digital control assures optimal operation of this 10 kW electric boiler in a way that optimizes electric energy consumption with the rated thermal output of the electric boiler.

These 10 kw electric boilers come complete with an integrated “ERP” energy efficient compliant heating pump and integrated 7 litre expansion vessel, making these electric boilers what is commonly know as a System Boiler.This allows you to have a “sealed heating system” meaning that no feed and expansion water tank is required in the loft or at high level – which can be prone to freezing or bursting.It also means  installation is made a lot more tidier and compact, as all required components are withing the boiler casing.

These electric central heating boilers can be controlled by an “OpenTherm+” thermostat or controller e.g. a nest controller etc ( control your 10kw electric boiler on the go, from your phone) giving your greater control over your electric wet central heating boiler.

They can also be controlled by a standard room thermostat or weekly programmer – the decision is yours to make.


Technical details of our 10 kw electric central heating boilers

Below you can see the technical data for the Flexiheat “FHEL9” and also the next size down and up in this range of touch screen electric boilers for central heating –

Please note as these electric central heating boilers, can be wired in either three phase or single phase, the below table shows both parameters. For example, the maximum rated current for the FHEL9 electric boiler, when wired up using a three phase electrical supply is – 3 x 14 Amps per phase, and when wired in single phase, the figure is 1 x 42 Amps.

10 kw electric central heating boilers; electric boiler 10 kw;


These boilers are CE marked and approved, and also comply with the directives 2006/95/EC (Low Voltage Directive, LVD) and 2004/108/EC (Electromagnetic Compatibility Directive, EMC) and carry a 2 years parts warranty as standard. So, if you want the best 10 kw electric boiler for sale on the UK market, then we are the company to speak to.

10 kW Electric boilers for sale UK & Ireland

Should you require anymore assistance or information on our 10 kW Electric Boilers / 10 kW Electric Central Heating Boilers , please don’t hesitate to contact our sales team on 01202 822221 or click here for our email contact form

Boiler pressure keeps dropping ? What to check

Why does my boiler pressure keeps dropping ? This is a common question , and following in this guide we’ll take you through the most common problems , what to look for , and actionable things that you can do to fix the dropping boiler pressure.Most of the time these fixes are easy , that can be done by yourself,as you don’t need to be an expert in order to do a little troubleshooting on your own.

By following these simple steps , you should figure out what is causing your low boiler pressure , and why it continually keeps on dropping , in no time at all,before having to call a plumber out. Some of the fixes can be done by you , whilst others you may have to get a plumber or heating engineer out to look at your heating system.

Boiler Pressure keeps dropping or continually low – Things to check

Firstly you need to check your boiler pressure gauge , and see whats it’s reading. This gauge is most commonly built into the boiler, or underneath it and should look like this or similar –

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The Heating System Pressure Gauge – The fist thing to investigate as why your boiler pressure keeps dropping

In the picture above the red marker on the gauge is just an indicator of where the level should be, the thin black marker is the actual pressure of the heating system.A pressurised boiler system or a sealed central heating system needs a certain amount of pressure to work,normally about 0.5 Bar – 1.5 Bar,although some will continue to function with far less pressure. If this pressure reading is lower than the recommend pressure level,this means you heating system water pressure is low and needs to be topped up.But before that is done, you need to establish why ?

Combi boiler pressure keeps dropping ?

It doesn’t matter whether your boiler is a heating or heat only boiler or a combi boiler, as we are talking about losing water pressure on the central heating system here .If your combi boiler is losing pressure on your domestic hot water side of the boiler ( this is you hot water that is provided to your hot water taps , showers or bath taps ) then this will be a mains water pressure problem, and you would need to consult your water supplier.

First thing to check –

Is there air in the heating system?

This is an easy thing to check yourself. You just might be able to diagnose your problem with just a few checks,

Before you do anything, try bleeding your radiators. But before you set off to do this, a top tip is to have a towel or rag to catch any drips from the radiator air vent, as the water form the heating system can be black in colour and stain anything that if falls onto.To bleed your radiators, use a radiator key.Find the radiator air vent and slowly turn the radiator key counter clockwise until water starts dripping out, this releases the trapped air and lets hot water fill that void or space in the radiator again, ensuring a nice hot radiator.Always bleed the top floor radiators first and make sure you bleed the radiators in sequence.Bleeding the air from the radiators will then cause the pressure to drop lower again, so check it again after bleeding all the rads and adjust it accordingly.

If bleeding the radiators doesn’t work,then you may have a bigger issue such as an air lock in the heating system or you may even need to have the heating system itself flushed out. I wouldn’t recommend you doing this yourself , unless you feel completely comfortable, and have the tools and equipment to do it properly. So it’s time to call a plumber for most people.

Second thing to check –

Is there a leak in your central heating system?

Look for signs of a water leak such as a damp floor, leaky pipes, a small hole in a radiator somewhere or a stain on your ceiling, any or all of these signs point to you have a leak on your central heating system, which is causing your boiler to lose pressure.Finding a leak may sometimes feel like finding a needle in a haystack, but it’s worth trying to find it yourself, before calling out a plumber, as most heating engineers charge an hourly rate, which can become quite expensive, should be tasked with finding the leak on you central heating system.

Third Thing to check –

Is the boiler pressure relief valve leaking ?

Is the pipe coming off the pressure relief valve on the boiler continually dripping water ? If so at some point the valve has probably operated and there may be some internal debris that is stop it from properly shutting off again. This valve may need to be cleaned or replaced completely and is a fairly cheap repair. This job really should be left to a qualified plumber or heating engineer to do.

Fourth thing to check –

Is the Boiler Expansion Vessel Faulty?

boiler pressure keeps dropping,combi boiler pressure keeps dropping,boiler pressure keeps dropping to 0,ferroli boiler pressure keeps dropping
An external expansion vessel, used in central heating systems

All modern sealed system boilers or pressurised boiler systems use an expansion vessel , either placed within the boiler but can be located externally too , that accommodates any expansion that is created when water is heated up in the heating system. If the expansion vessel is faulty, it normally means that it will not be able to handle the expanding hot water resulting in the pressure in the heating system rising rapidly and this water will be ejected through the pressure relief valve, once it goes beyond 3 bar in pressure. The expansion vessel’s internal bladder, which is normally made from neoprene rubber (Neoprene rubber resists degradation more than natural or synthetic rubber), must be inflated by air or ideally nitrogen ( when the gas side is filled with nitrogen, and not with air, corrosion is prevented and the pressure loss is even more limited). This level of nitrogen or air, commonly known as it’s charge must be maintained through annual servicing of the boiler or eventually it will dissipate completely, eventually causing the boiler to have continual low-pressure problems and ultimately failure of the central heating system

combi boiler pressure keeps dropping,boiler pressure keeps dropping to 0,boiler pressure keeps dropping
Expansion Vessel internal picture, showing the “Bladder”

If that doesn’t seem to be the problem, then the next thing to do is find the Schrader valve on the expansion vessel, which looks like an air valve found on a car or bike tyre. Then depress the valve in the centre using a screwdriver or similar. If water comes out of the valve it means that the diaphragm has failed inside the expansion vessel, and you will need to replace the vessel or with some units you can just replace the internal neoprene bladder.

Dropping boiler pressure from Flexiheat UK; boiler pressure keeps dropping; boiler pressure keeps dropping to 0;
Expansion Vessel Schrader Valve Picture & How to Test

If air comes out of the schrader valve you need to check the pressure of the charge in the vessel. To do this you will need a suitable measuring device, such as a car tyre pressure checker. The air or nitrogen pressure for an internal boiler expansion vessel should be around 0.8 bar ( but please consult your boiler’s operating manual and check exactly what pressure the vessel should be charged to) but this could be higher for externally mounted expansion vessels. To fix this call your local heating engineer and ask him to re-inflate the expansion vessel.This is done by draining off all the heating system pressure first, then then using a pump (like a bicycle type or similar) the expansion vessel is re-inflated.

So what if the boiler pressure keeps dropping after doing this ?

So after your expansion vessel has been re-inflated keep an eye on the boilers pressure gauge, to see that it’s still correctly holding the system pressure for the next couple of weeks, as sometimes the internal bladder that holds the air or nitrogen has a pinhole puncture and it leaks out over days or even weeks , which isn’t always obvious, until you see your boiler pressure dropping.

Pressurizing your expansion vessel should typically be done as part of an annual boiler service,by a qualified plumber / heating engineer. We highly recommend that any work that is required to be done, is not done by a yourself or a novice, as we are dealing with hot water and pressure here, and these two items can cause physical damage to people or the property

Boilers with low water pressure – other things to consider

One thing that people often overlook is that if your boiler has been under pressured for a long period and you’ve been constantly topping the heating system up via a filling loop, then it would have depleted the central heating inhibitor chemicals within the heating system, it is therefore very important to add more inhibitor to the heating system , otherwise your heating system will start to corrode which can lead to a failure of your boiler, in a relatively short period.

Refilling your low pressure boiler heating system

After diagnosing your problem, and getting it fixed, the final step in getting you low pressure boiler back up to the desired pressure is refilling the heating system with what is called a filling loop . On some boilers the filling loop is internal to the boiler but in most systems the filling loop is an external piece of kit, and should be what is termed as a part “L” of the building regulation compliant and looks like this –

ferroli boiler pressure keeps dropping,combi boiler pressure keeps dropping
Part L Compliant Filling Loop

You should only refill your central heating system when the system has cooled down. You simply open the valves up, slowly and wait for the pressure gauge on the boiler to rise to 1.2 Bar to 1.5 Bar maximum (please consult you boiler manual for the recommended pressure that they stipulate).The process is then finished off by closing the valves , thus sealing the heating system from the mains water

Hopefully this guide “boiler pressure keeps dropping” has been helpful, and shown you some of most common reasons why this happens and how to remedy it.

Oil Combi Boilers

Oil Combi Boilers or Oil Combination boilers are oil boilers that can do both the central heating requirements of your property and your domestic hot water requirements as well, in one combined unit – thus the name combination or “combi” oil boilers. Combi or combination boilers are now the most popular type of boiler install on the UK market , as over 70% of UK households have them installed over other types of boilers.These oil combination boilers , due to their compact size are often the perfect heating and domestic hot water solution for smaller properties within the UK.

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Oil Combi Boilers – Oil Combination Boilers from Flexiheat UK

How do Oil Combination Boilers / Oil Combi Boilers Work ?

Oil combi boilers / Oil Combination boilers work by instantly heating the cold water from the mains supply as soon as there is a demand for domestic hot water, when a hot water tap is turned on, or when a shower is operated. This makes an oil combi boiler highly efficient as there is no requirement to have stored hot water in a cylinder or calorifier. This makes an oil combi boiler installation more compact , freeing up living space withing withing the home or flat.as well as being cheaper and easier to install and more economical to run.

Our Condensing Oil Combi Boiler incorporates a high-tech boiler, similar in principle to most oil fired boilers, which comprises an ultra compact heat exchanger and pressure jet burner. This boiler heats water, known as primary water, which circulates through radiators for central heating. In addition, for increased efficiency, it passes through our patented condensing unit

Our oil combi boiler benefits from a high efficiency plate heat exchanger
which transfers heat from the primary water to the domestic hot water directly from the mains, thus providing domestic hot water at mains pressure. Within the appliance are components such as a circulating pump, heating system expansion-vessel, water temperature control valve and such other controls which you would expect to find in a well designed, efficient modern oil heating system.With our Oil Combi boilers all this is extremely compact and a well engineered package.No need for copper storage cylinders, tanks of water in the loft, and long heat-wasteful pipe runs. Poor showers are a thing of the past, with our oil combi boilers

Oil combi boilers and hot water – Better but different- Condensing oil combi boilers produce hot water in a different manner from traditional systems with a copper storage cylinder. An understanding of the principle will enable you to obtain optimum results for your appliance and realise your level of expectation.

So what is the main difference? an Combination Boiler heats cold water directly from the mains by transferring heat in the boiler (primary water) to the incoming cold mains (domestic) water by means of a highly efficient ‘plate’ heat exchanger. In order to reduce the possibility of excessive water flow, each Combi incorporates a built in flow regulator, carefully sized according to the output of the appliance, in order to stabilise the delivery of hot water. This flow regulator also enhances the performance of its various control thermostats and mixing valves within the appliance which perform better when less subjected to extreme and sudden changes of volume and temperature.

The advantages of the system are:
a). Hot water is delivered at mains pressure (regardless of flow rate) which means that vigorous pressure can be delivered for showers. Typical mains pressure can be 2 Bar – 3.5 Bar compared with say 0.35 Bar – 0.6 Bar from a storage tank in the roof (each metre of ‘head’ produces merely 0.1 of a bar pressure).
b). The hot water is potable – that is, it is fresh from the mains like the cold supply and has not passed through storage tanks in the roof or a storage cylinder.
c). It is more economical and more efficient to produce hot water by this means rather than the old storage cylinder method.
d). Hot water can be produced indefinitely provided that the flow rate is equated to the boiler output.

In order to reduce the possibility of excessive water flow, each of our oil combi boilers incorporates a built in flow regulator, carefully sized according to the output of the appliance, in order to stabilise the delivery of hot water. This flow regulator also enhances the performance of its various control thermostats and mixing valves within the appliance which perform better when less subjected to extreme and sudden changes of volume and temperature.

Why get a new Oil Combination Boiler?

The Top reasons to get an oil combination boiler –

  • As long as you have mains cold water to your property, you can have unlimited domestic hot water – when ever your require it.
  • You don’t require a hot water cylinder or calorifier ,as well as a cold water storage tank in the loft / attic.This means they are particularly suited to being installed in a flat or smaller house
  • They are often quicker and easier to install than other oil heating systems as the system will contain less components.This often makes the heating and hot water installation cheaper to.
  • Environmental groups argue that the burning of fossil fuels is damaging to the environment. Oil Combi boilers make a significant contribution to lessen such emissions by reducing the amount of Carbon Dioxide (CO2) produced.
  • Oil is a more efficient fuel than gas, so you’ll get a good return on every unit of energy used. But,just like gas, the price of oil can fluctuate so sometimes it will be more cost effective.

Oil Fired Combination Boiler Efficiencies

Oil fired combi boiler efficiencies are very high these days with the combustion efficiencies at around 95%. Since the 1st April 2007 all oil fired boiler must have a Sedbuk efficiency of 86% or more – Sedbuk stands for “Seasonal Efficiency Of Domestic Boilers in the UK” and is an energy efficiency scheme devised by the UK government. The Sedbuk rating is calculated from laboratory tests combined with the type of fuel of an appliance, the climate,the hot water system, whether ignition if automatic or permanent and other such factors necessary to produce a meaningful indication of normal efficiency in typical usage.On 26 September 2015 the way boilers are rated for energy efficiency changed; SEDBUK was replaced by the Energy related Products (ErP) directive, bringing a new rating system into effect,to help reduce the impact we all have on the environment, via the EU’s long-term 20-20-20 targets: ErP applies to all residential and commercial heating products across Europe

Oil fired combi boilers Pros and Cons

Pros of Oil combi boilers:

  • Hot water is heated on demand, so there’s no waiting for a tank of water to heat up to run a bath or have a shower
  • Oil combi boilers are highly energy efficient, with most manufactured with an efficiency of 90% or above
  • The Hot water is delivered at the same pressure as the mains water, giving you a powerful hot shower without needing to have a separate shower pump
  • You should be able to save money on installation with an oil combination boiler, since no tank is needed and therefore there’s less pipe work required and a shorter installation time
  • Their compact size means they’re a great space saver; our wall hung oil combi boilers are even small enough to fit inside a standard kitchen or utility room, or you can use our externally mounted version, which take up no internal room at all.
  • Less likely to suffer from scaling up with sediment of calcium, dirt and scale unlike a storage cylinder or calorifier
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One potential problem that storage hot water cylinders tend to suffer from – Calcium,Dirt and Scale build up – this is much less likely with Oil Combi Boilers from Flexiheat UK , as no hot water is stored.

Cons of Oil combi boilers:

  • If your oil fired combi boiler breaks down, you lose both heating and domestic hot water
  • You will experience a decline in water pressure should more than one appliance require hot water at the same time
  • Unlike a domestic hot water storage system, which often has electrical immersion heaters in the event of a boiler breakdown, you don’t have this back up system with oil fired combi boilers

Oil combi boilers for sale

Here at Flexiheat UK, we have some of the best oil combi boilers for sale on the UK market.These boilers are robust and will give many years of trouble free service life. We have two different types of oil combi boilers for sale, the first being a wall mounted unit,which is an internal version, and the second being an external wall mounted unit,which is weatherproof and has been designed to fit on an external wall of the property.

We go into these two option in much great depth on their own individual dedicate pages, but here is a brief overview of the range

  1. There are two models available – The internal oil fired combination boiler has a heating output of 18 kW – or 61,416 Btu’s Output and a Domestic Hot Water performance of 24 kW- which will give a flow rate of 10.5 litres a minute,with a 35 Degrees C temperature rise . The larger unit which is externally mounted has an output of 23kW to 28kW Output- or 78,476 Btu’s to 95,536 Btu’s Output.The Flow rate of this boilers is 12 to 14 Litres a minute, with a 50 Degrees C temperature uplift or rise.
  2. The smaller model,which is an internal wall mounted boiler only is only available in an internal version . The larger boiler is only available as an external mounted version ( particularly useful should space for locating your oil combination boiler be at a premium or impractical)
  3. Both Oil Combi Boilers are what is termed as a “System Oil Boiler” – A system boiler is basically an standard boiler, which includes the pump and expansion tank that are built into the wall mounted condensing oil combi boiler which allows you to have a “sealed heating system”, The benefits of a ” sealed system” are that no feed and expansion tank is required in the loft or at high level ( another benefit is that these tanks were prone to freezing or bursting at the most inconvenient time , often cause major water damage or resulting in a failed heating system ), and that the oil heating installation is made a lot more tidier, easier, and simplifies servicing of the wall hung oil boiler, as everything is in one place , withing the boiler casing.
  4. Domestic Hot Water performance – The smaller oil fired combi boiler will produce 10.5 Litres / minute , with a temperature rise of 35C , also known as a Delta T of 35C – Whilst the larger oil combination boiler will produce 14 Litres / minute , with a temperature rise of 50C

Full technical details on our internal oil combi boilers can be found on it dedicated web page here

And for our external oil combi boilers the information can be found here

Best Quality & Price Oil Combination Boilers in the UK

All of our oil combi boilers have been designed and manufactured to the following standards – OFTEC OFS A100, European Directives BED 92/42 and EEC LVD EN 60335-1 and EMC 89/33C/EEC and are WRAS approved. They are designed to burn Kerosene 28 Class C fuel – to British Standard Specification BS 2869 Part 2 Class C2 , European standard BS EN 2869:2010 Class C2, which is also referred to as Heating Oil, 28 Second Burning Oil or Central Heating Fuel. This grade of Kerosene has clean burning characteristics whilst maintain a high heat output and maximum fuel economy

We have heard our Oil Combi Boilers called everything from Oil Combination Boilers, Oil Fired Combi Boilers, and you can feel free to call them what you like, all we know is that we have a British built, high quality (we think it’s the best oil combi boiler on the market) Oil Combi Boiler, at some of the best prices on the UK market, so should you require any more information on our Oil Combination Boiler range , please do not hesitate to contact our sales team on 01202 822221 or click here for our email contact form

Warm Air Heaters – ErP 2018 Lot 21 Directive Effective January 2018

ErP 2018 Lot21 – Guidelines for Warm Air Heating Systems



What is ErP?

The Energy related Product (ErP) Directive is designed to reduce carbon emissions across Europe. In the same way as on white goods, TV’s and tyres, since September 2015, ErP also applies to domestic and commercial heating products.

The main objective of ErP is to phase out low efficiency products from the market place. ErP also covers electrical powered products, boilers, water heaters and renewable technologies, but for Warm Air Heating applications, where humans are enjoying thermal comfort, then the warm heaters being installed must achieve a seasonal efficiency of more than 72%, from 1st January 2018.

 Requirements :

  • Efficiency requirements (gas and oil)
  • Limit values ​​for nitrogen oxide emissions:
  • Erp Stage 2 for Warm Air Heaters – From 26th September 2018 maximum 100 mg / kWh (180 mg / kWh oil)
  • Erp Stage 3 for Warm Air Heaters – From 1 January 2021 maximum 70 mg / kWh (150 mg / kWh oil)
  • Information must be provided freely and publicly

The importance of being ErP compliant

Since September 2015 the Energy related Product (ErP) Directive has impacted boilers, water heaters and hot water storage tanks. Flexiheat UK are committed to ensuring that all products are compliant and all heating professionals understand ErP regulations.

ErP ObjectivesThe ErP Directive was designed to reduce harmful non-environmentally friendly emissions from energy consuming products. This is to contribute to the European Union’s 20-20-20 targets on climate change and energy.

Targets for 2020 

There are three main objectives for 2020:

  • A 20% reduction in EU greenhouse gas emissions compared to 1990 levels
  • A 20% improvement in the EU’s energy efficiency
  • Raising the share of EU energy consumption produced from renewable resources to 20%

Implementation in two stages:

  1. From 01.01.2018: Space heating annual efficiency η s at least 72%
  2. From 01.01.2020: Space heating annual utilization rate η s at least 78%

 Space heating annual utilization rate :  Definition

The space heating annual utilization rate is a key figure that should take into account the actual operation of heating systems. It is not the firing efficiency. The commission responsible for the directive has recognized that heating works on average 85% in partial load operation – ie in the transition periods – and only about 15% of the full load operation is required and therefore weights the heating efficiencies. Furthermore, inefficient burners, poor insulation and permanent pilot lights are considered with negative factors. Thus, for the first time, different manufacturers can be objectively compared.

Is a Mandatory if –

Warm Air Heaters are being used to provide thermal comfort for human beings – then the heaters MUST comply under the ErP for Warm Air Heaters – Lot 21 of the regulations

 Applications where the  ErP Directive for Warm Air Heaters 2018 are exempt:

  • Door curtains
  • Frost protection of perishable product
  • Horticultural heating (ie glasshouses)
  • Agricultural heating (ie poultry houses)
  • Process heaters/dryers

Information for Warm Air Heating Installers

All Warm Air Heating installers are responsible for ensuring compliance with certain parts of the ErP Directive when carrying out an installation or replacement. Installers have to carry out efficiency calculations for the installed system, provide energy labels and complete the ‘fiche’ document.

Flexiheat UK  is committed to supporting installers with everything they need to complete the fiche and ensure everything is ErP compliant. We strongly recommend that warm air heating installers become familiar with how ErP works.

For more information on the ErP Directive please visit: www.gov.uk/placing-energy-related-products-on-the-uk-market.

You can download a copy of the ErP Directive for Warm Air Heaters 2018 here 

German Electric Heaters – From Flexiheat UK

With the rising costs of gas and oil, we are more and more looking for ways to cut back on heating bills without sacrificing comfort. German electric heaters are a reliable way to heat the areas of a house, apartment or business unit you use the most, without wasting energy trying to heat your entire building. When looking for the right model, consider the advantages an electric heater can provide.

Our range of German Electric Heaters are well engineered being built in the southern area of Germany, which is synonymous with manufacturing excellence. The units are built to an extremely high standard and are some of the most energy efficient and safest models on the market. If you really think you can benefit from an electric heater in your home, garage, or the office this is the type you should get. As the saying goes,  “you to get what you pay for”. That is why, we strongly recommend paying that little bit extra for a German electric heater to give you peace of mind with its high standard of construction.

Our German factory offer a nice range of electric heaters, from a 3kW model up to and 18kW model. The 18kW model has a version that has high temperature capabilities, allowing it to thermostatically controlled up to 70°C. This German made electric heater unit is particularly beneficial for use in the heat treatment, pest control industry. We have found that our 3kW German made unit, after prolonged continuous use, can actually pull 13.1A. We have two options for this. The first being we can supply a dedicated Euro to UK plug adapter, which prevents this or alternatively you can purchase our UK built FF3 unit, which we do not have this problem with. This would be supplied with a standard UK plugGerman Electric Heaters



Why choose to go down the electric heating route

There are several options for heating a room. However, not all options are a practical for some properties. In addition, not all locations have the same energy sources, so that a choice must always be made. For example, for a property without access to gas, one can opt for an oil heating system. What if this property is too remote for regular deliveries? Then a great choice is to opt for electric heating.


Below are just some of the benefits of using one of our German electric heaters; –

Clean and green – an electric heater, unlike oil or gas gives off no emissions.   They are 100% energy efficient; converting every bit of the input energy to heat. They also reduce environmental impact compared to other fuel types:

No installation costsGerman Electric Heaters do not require any installation. You only have to plug the plug into the socket and the device is immediately ready for use

High efficiency –  German electric heaters are very efficient, because the electricity used is directly converted into heat

Additional heating – German electric heaters are ideal when the existing heating system is not sufficient or more heat is required in the short term. Moreover, they are the perfect solution in the transitional period, i.e. in spring and autumn, when the temperatures are not so low that the central heating must be switched on

Safe to Use – German Electric heaters are distinguished by different safety features such as overheating protection

Portability – electric heaters are extremely versatile and more practical in different situations than other heaters. Therefore, they are often preferred

Quiet and discreet – with the exception of the fan, electric heaters have a very low noise level, therefore making them ideal in smaller rooms

Zonal Heating – because of their mobility, an electric heater is perfect for specific areas that require temporary or permanent heat


Make life easy for yourself, with our German electric Heaters, in most instances all you need is a power socket. However, for larger areas three phase models are also available giving large volumes of heat. There are no exhaust gases or smells – just large volumes of safe, fume-free heat. Electric heaters are ideal for virtually any location including


  • Offices
  • Shops and showrooms
  • Hotels
  • Garages
  • Industrial units
  • Classrooms
  • Clinics
  • Building sites
  • Marquees and tents
  • Storerooms
  • Workshops
  • Ships
  • Switching stations
  • Temporary accommodation
  • Modular buildings


The amount of space an electric heater can take care of for you will vary. Make sure you read do plenty of research before you buy one. Generally, this information will be displayed in square footage. You can easily calculate the square footage of an area by multiplying the length of it times the width.

You will find that many of our models of electric heaters also are very nice looking. They aren’t going to stand out like a sore thumb. Many of them are very small in size but you will be surprised at how much heat they are able to emit for you. They also take very little time to heat up so you won’t be waiting in the cold for that warmth to start circulating in the room.

Our range of German electric heaters can definitely offer you the additional warmth that you desire. With their in-built thermostat and two heat settings they will certainly save you energy as well

Should you require anymore assistance or information on our range of  German Electric Heaters , please don’t hesitate to contact our sales team on 01202 822221 or click here for our email contact form

Commercial Boiler

A commercial boiler is a pressurized system that burn combustible fuel to heat water that is then used to provide heat to your building. Some boilers use the actual hot water itself while others utilise water that has been turned to steam.Be it an hotel, school or hospital boiler, a district heating scheme or any industrial or commercial refurbishment of your heating scheme, you can benefit from our vast experience in supplying commercial heating boilers in the UK and Ireland.

Commercial Boiler

Inside the boiler itself, the burner , wether it be natural gas / Propane (LPG) or Oil  creates heat that is then transferred to the water via the heat exchanger. The process creates either hot water or steam, depending on the type of commercial boiler. The hot water is circulated via pipes throughout your building. The water then enters radiators or other components that divide the heat thus providing the heating you require to keep your indoor spaces comfortable.

Natural gas is probably the most common fuel used in commercial boilers. Other types of boilers are available that burn fuel oil like diesel or heating oil. There are also boilers out there that use electric resistance coils to produce heating from electricity.


Common components of commercial boilers


  • Burner: A burner is a device for the combustion of a fuel. For example, a fuel oil burner can be mounted on the boiler of a central heating system (oil heating). The burner produces a flame by pressing the fuel oil through a fine nozzle and supplying combustion air with a blower. In the burner start, the flame is usually ignited with an electric arc. The hot combustion gases enter the boiler, which effectively serves as a heat exchanger: the generated heat is transferred to the boiler water to a large extent. Similar burners are operated with natural gas. No atomization is necessary here, only a good mixing of gas and air. The correct dosage of the combustion air is important for a clean and efficient combustion. Ideally, the burner supplies exactly the required amount of air to the flame: by no means too little to allow complete combustion (without the formation of soot or carbon monoxide), but not too much to minimise exhaust gas losses


  • Combustion chamber: A combustion chamber is a component in which air and fuel are mixed, ignited and burned to heat the water. The chamber contains the burners and is specially designed to provide a safe and secure area for high-temperature combustion of volatile fuel. The chamber is commonly constructed of steel, cast iron or other heavy-duty metal.


  • Heat exchanger: The heat exchanger is an integral component that carries the heat created by the burners to the water in the boiler. Heat exchangers are commonly made of cast iron, stainless steel or copper.


  • Controls: System controls allow the user to calibrate water temperature, air and fuel supply mixtures, ignition and internal pressure. The controls regulate when and how often the burner fires, the temperature of the water, the rate at which fuel is used and the quality of the mixture of fuel and oxygen. Commercial boilers can also be fitted with appropriate safety controls that make sure that the internal pressures in the boiler doesn’t get too high, the water temperature stays within a safe range and ensures that the system continues to operate properly.


  • Exhaust stack: Also called the flue, the exhaust stack is the series of pipes that divert the exhaust gases away from the inside of the building to the outside. The exhaust stack must be constructed to ensure that any dangerous gases such as carbon monoxide are safely vented away from the interior of your facility.



Boiler Safety and Maintenance

Commercial boilers can be unpredictable systems containing very hot water or steam under high pressure. Therefore, care must be taken to make sure the boiler is clean and working properly and that all safety systems are functional and ready to work if required. Hot water or steam leaks can pose a serious risk of causing injuries or damage. Commercial boilers can potentially explode, which can result in serious injuries or even death as well as significant damage to your commercial facility.

It is imperative that your commercial boiler receives regular preventive maintenance from a professional heating engineer. This maintenance not only ensures the system works correctly and at its highest level of efficiency but that it also works safely.

Here at Flexiheat UK, we realise that finding and purchasing a new commercial boiler is a complicated business. This is made far worse by the confusing terms used to describe boilers. This is our guide to these commercial boiler technical terms, to help make your search easier.



The term condensate is used regularly. Throughout the process of producing heat, the boiler will produce some condensation. This needs to leave your building or premises through an outside wall. In addition, some of the condensation will turn to liquid and need draining away. This is normally through a pipe that connects to your pre-existing drainage system.

Condensing Technology

This term has increased in popularity, as modern boilers are all fitted with condensing technology. This means it is capable of condensing the gas into heat for your business. The benefit of condensing technology is that a lot more of the waste gases are recycled and turned into more heat, which is far more cost effective and better for the environment.

Flow Rate

Flow rate is a term used to describe the amount of hot water that is produced in one minute. This is mainly relevant to combi-boilers. The higher the flow rate, the more water produced which means your boiler can work for less time and use less fuel. Essentially a boiler with a good flow rate will save you money on your bills, but is probably more expensive to purchase initially.

ErP Rating

This term refers to the A++ to G ratings, shown on all new boilers. Referring to the boiler’s energy efficiency as well as its heating and hot water performance, the rating allows you to choose the most efficient boiler. A++ is the highest performing and G is the lowest.


This term means: Seasonal Efficiency of Domestic Boilers in the UK. It is a percentage rating for boiler efficiency and it has been added as part of the overall ErP rating.


We at Flexiheat UK hope this glossary helps make choosing a new commercial boiler a little easier. Don’t let the commercial boiler technical terms give you a headache!

For any help and advice, don’t hesitate to contact us today on 01202 822221 or click here for our email contact form

Blow Heaters UK

Blow Heaters

Blow heaters are fundamentally any type of heater that is assisted via a fan.  As the term suggests, heat is expelled at a higher rate resulting in faster movement of warm air thus ensuring a more efficient and accurate heat delivery.  There are a range of Blow Heaters on the market. The most common of these is Electric Fan Heaters  which function by heating a coil or a heating conductor. The cold air is led along this heating coil and heated. A fan is then used to transport the heated air into the room. Electric Fan Heaters are usually small and space-saving, which means they can be used almost everywhere and are super-flexible as far as the location is concerned. Only a power connection and a little space is all that’s required.  They are used for heating rooms such as garages, greenhouses, tents and the like. They are often used as additional heating in the living area, because of their fast and effective way of heating the room.

Blow Heaters

Common Applications
Building industry • Heating and drying out rooms, often in conjunction with a dehumidifier.
Industry • Heating of offices, canteens, stores, warehouses etc.
Livestock • Heating poultry houses.
Horticulture • Heating of sorting areas and greenhouses.
Agriculture • Heating of livestock areas, dairy parlours, workshops and packing sheds.

For more information on our range of electric blow heaters, please click here


Other popular types of blow heaters are ones fuelled by gas, usually propane or liquefied petroleum gas or LPG, for short.   Most gas blow heaters use a so-called piezoelectric igniter. A material, often crystal quartz, which has the property of developing an electrical potential when pressure is applied is housed in a mechanism that allows a spring strike hammer. This action generates a spark, igniting the gas

Blow Heaters

Common Applications

Livestock • Heating of pig and poultry houses.
Agriculture • Drying of agricultural products.
Horticulture • Heating of greenhouses and polytunnels (N.B. Control CO2 and CO emission)



Temperature control is a desirable feature in a gas blow heater. An automatic thermostat is a popular way to achieve this and some of the more sophisticated blow heaters are fitted with a thermostat while others simply have a manual high and low flame control.


The main drawback of burning propane or other combustible materials, for that matter, in a small and enclosed space is the risk of carbon monoxide poisoning. Carbon monoxide is a product of irregular combustion. It is odourless and it competes with oxygen in the blood, which deprives the brain and other parts of the body of oxygen. Some propane heaters are approved for indoor use and some are not.


For more information on our range of gas blow heaters, please click here



The advantages of blow heaters


  • Blow Heaters heat the room quickly and effectively to the desired temperature.


  • No additional work is required to operate a blow heater. Only one socket and some space should be available.


  • The purchase costs of blow heaters are manageable.


  • Most models are equipped with practical carrying handles or tramples, so even if the case is still warm, they can easily be moved locally.


  • The most compact design of the devices allows them to be used in a very small space.


  • Due to the existing “cold stage”, the units can be used as a fan in summer.


  • Integrated or external time switches allow time-controlled use.


  • Many appliances can be used as frost monitors without an external thermostatic control unit.


Should you require anymore assistance or information on our range of Blow Heaters , please don’t hesitate to contact our sales team on 01202 822221 or click here for our email contact form

Commercial Heaters UK -A Guide to

Commercial Heaters – Your Options

Commercial heaters are frequently used in almost all the industries today right from manufacturing , car show rooms , retail units to warehouses . There is a variety of heaters that serve different purposes. As an unavoidable necessity, it is essential for businesses to install a commercial heating solution in their premises, to either keep they’re staff or customers , or even both satisfied. Commercial heaters can also be used to keep products above certain temperatures to ensure no damage to them , such as frost protection etc.

Installing them may be an easy task as you simply order the supplier or warm air heating installer to do so, yet the most challenging part lies in different types of questions and queries before installing-

Please go through the following points if you want to get the most out of your commercial heating equipment –


First of all, make an in-depth assessment of what your heating needs exactly are. Looking at the devices randomly may take you on the wrong route.


The following are the most common types of commercial heaters on the market based on fuel types


Commercial Gas Heaters and Propane(LPG) Heaters


Commercial Gas heaters burn a variety of either natural gas, propane (LPG),  natural gas (NG) or other gaseous fuels to generate heat. Early gas heaters were similar to the Bunsen burner in that both they used a flame to heat air locally. This heated air was spread by convection to warm an entire area. Later, the burner’s flame was used to heat a structure made of asbestos, a strong and incombustible fibre. Although asbestos structures have been replaced by fire clay and other refractory materials, modern gas heaters still operate according to this principle but the refractory materials have now been replaced by a combustion chamber and a heat exchanger, which means that any products of combustion are now expelled via a flue pipe system, being infinitely safer than the early days. They are often Co-Axial flued , or sometimes referred to as room sealed , whereby they take the air required for combustion form outside the building , via a twin piped flue system, this results in higher efficiency as the building is more air tight . Both natural gas commercial gas heaters and propane commercial heaters often use similar designs, the only difference is the gas burner.


commercial heaters

Commercial Suspended Gas Heaters – In a Garden Centre


According to their radius of effect, gas heating systems can be divided into two types: the so-called gas convector and gas-turbine heating.


With gas convector is heaters, which are used primarily for heating individual rooms. The heat generated by the combustion of the gas is then discharged directly to the environment. The gas-turbine heating, on the other hand, is generally used as a central heating system to supply entire buildings

Commercial Heaters

Commercial Gas Floor Standing Heaters – With Free Blowing Heads or Can be Ducted


Commercial Heaters – Gas or Propane – Applications

There are a broad range of different applications for gas and propane heaters. Below are just some examples;-

  • Industrial Applications
  • Warehouses
  • Workshops
  • Garages
  • Greenhouses
  • Offices and Shops 
  • Retail Outlets



There are a whole host of optional features for gas heaters. Some are indirect-fired, some are corrosion resistant, some are finned and some are even explosion-proof others are designed to provide dynamic power regulation . They can feature custom designs or have a secondary heat exchanger ( condensing warm air heating) for maximum heat transfer. Gas heaters can also be fitted with an external temperature sensors and multiple / independent timing controls to suit the site conditions


Commercial Heaters – Oil – Gas Oil or Kerosene 


Oil commercial heaters predominantly burn fuel like heating oils such as gas oil or kerosene to generate heat but waste or used oils are also a popular fuel source.


There are many different varieties of oil and kerosene commercial heaters.

Probably the most common are stationary cabinet’s types. These are usually floor mounted and either blow out warm air through their vents or through duct.

commercial heaters

Commercial Heaters – Oil Fired , with free blowing heads or ducted option

Another popular type is the suspended unit heater. These can either be wall mounted or suspended from the ceiling. These are advantageous options as they take up less space.

commercial heaters

Commercial Oil Heaters – Used in a Greenhouse Heating application


Oil and kerosene commercial heaters transfer heat to a room over a longer period of time and at a slower rate. When the oil burner is engaged, heating oil travels from the tank or reservoir to the burner by way of a pump where it becomes a fine mist mixed with air. The fuel/air mixture is then injected into the burner where it is ignited in the combustion chamber of the heater, which then transfers the heat via a heat exchanger to the space being heated.



Oil and kerosene heaters use single-phase or three-phase power.



There are a wide variety of applications for oil heaters. Examples include;


  • Warehouse & Factory heating
  • Drying,
  • Melting,
  • Annealing or heat treating,
  • Curing or tempering
  • Operations with gases and vapours,
  • Clean water heating
  • Heat process and high-purity waters,
  • Lightweight oils & degreasing solutions,
  • Heavy & medium weight oils,
  • Mild & severe corrosive solutions,
  • Caustic solutions and liquid paraffin.



Commercial Heaters – Electric Heaters


Electric heating systems are  heaters which produce heat via heating wires or heating coils. They can be roughly differentiated according to whether they store the heat, store it in part or deliver it directly or whether the heat is generated by infrared radiation or by the heating of air.



There are many variants of electric heaters. Below are the main types

1 – Natural convection

The portable heater with natural convection resembles a standard heater. It settles on the ground and heats up slowly.


  • Fresh air rises inside the cabinet by convection.
  • The air is then heated by an element.
  • The hot air exits through the openings and rises into the room.
  • There is no fan on this type of appliance.


  • The natural convection heater keeps the temperature constant, provided the room is closed or not too large.
  • Silent.

Meets the needs

  • Ideal for use for several hours at a time, for example, at the chalet or at night, in a room when the central heating of the building is switched off.


2 – Forced Convection or Blow Heaters


The forced convection heater, also referred to as forced air or blow heaters are a very popular model. These heaters are often small and light and distribute the heat with a fan.


Commercial Heaters

Commercial Electric Heaters



  • A fan moves the air around the heating elements and pushes it forward.
  • In ceramic models, electricity passes through ceramic plates that store heat in their mass, and then a fan spreads it.



  • Small and light.
  • Rather stable temperature in a closed room.
  • Heat sensation faster than with fanless model.
  • Allows directing of heat.

Meets the needs

  • Ideal for rapid heating distributed throughout a room, even when the area to be heated is large, then we do commercial electric heaters with an heat output of 80 kW , which we think are the largest portable electric heater on the UK market to date

Commercial Heaters

Commercial Electric Heaters – This is our 80kW portable electric heater



3 – Commercial Heaters -Radiation (radiant heating)


The radiant heater, also called radiant heating, often looks like a standing fan or cabinet heater. It heats according to the same principle as the lamps used on terraces. It can therefore heat a person very quickly!

Commercial Heaters

Commercial Portable Electric Infrared Heater



  • Uses a very hot element, usually halogen or quartz.
  • The element produces an infrared wave that quickly gives a sensation of warmth in a precise direction.


  • Quiet.
  • Sensation of immediate heat, much like the rays of the sun on a winter day; Warms bodies and objects, but not directly air.
  • Allows directing of heat.


Meets the needs

  • Ideal for directly heating a person in a room with a high ceiling (because hot air is rising) or in a room where there are drafts. Because of the risk of burns, it is not ideal when there are young children or elderly nearby.



Some of the key features of electric heaters are portability, precision temperature monitoring & control and design flexibility



Electric commercial heaters are commonly used throughout industrial and consumer products to heat all types of liquids, gases, vapours, and solids. In consumer products, electric heaters are commonly used for heating water, air and even flooring. Industrial warm air heating applications can utilize much higher wattages and these industrial electrical heaters can be used for applications such as heat treating for pest control , for drying of products etc, as well as standard space heating


Advantages of Commercial Electric Heating

  • Low cost in purchase
  • Low installation costs, since no piping necessary
  • No space required for burner or fuel storage
  • No chimney
  • Maintenance costs are eliminated
  • Good solution for temporarily heated rooms or buildings
  • No or little dust swirling, good for allergy sufferers


How to calculate how much heat you require , to get your correct commercial heaters or heater

Once you have determined the type of heater for you building you then need to work out which size you require. This can be achieved in the form of a simple heat loss calculation. The most important factors to consider are the dimensions of the building, the length, width and average height. There are a number of online calculators that you can use to work out the heat requirements.  The answer will typically be given in kW (kilowatts) of BTU (British Thermal Units)

Once the appropriate type of commercial heater has been decided and then installed it is advisable to appoint experienced operators at your factory premises so that they can ensure the heater(s) function correctly

Space plays a vital role as far as the correct installation of these apparatuses is concerned. Take measurement of the space where the device or devices are to be installed.

Let us help you choose the right commercial heater that’s best for your business

No single heating system is the right option for each and every commercial property. The size and location of your business, as well as the size of your budget, will all factor in to your decision. At Flexiheat UK we are ready to provide you with expert advice to help you select the commercial HVAC system that fits your business needs. Call us now or contact us via email



Gas Heaters UK – What’s your options ?

Gas Heaters UK

Gas Heaters UK – Natural gas is a fossil fuel that releases almost no classical pollutants during combustion. It has the lowest carbon content and the highest hydrogen content of all fossil fuels.

In terms of the same energy content, about 25 percent less carbon dioxide (CO2) is produced when burning natural gas than when burning fuel oil. In terms of fine dust, too, natural gas, compared to wood and oil, has a considerable advantage due to the absence of carbon black. One cubic meter of natural gas contains around 10kWh of energy

Natural gas is very affordable, so running a gas heater can be budget friendly. This type of gas is also very clean, so it is good for the environment, which is an additional benefit of using a gas heater.

Most gas heaters are designed to turn off if they fall over or overheat. This safety feature makes gas heaters even safer for your home or office.

These types of heaters provide a very warm heat and are excellent for supplementing an existing heating system. Natural gas is a popular heating option for commercial and industrial locations because it provides a very comfortable heat, making the area feel warm and cozy all winter. Gas heaters are also extremely effective and can be used in a variety of places.


There are a whole host of variants when it comes to heating with gas in the UK. Below are the main ones;-





Gas Heaters UK

A suspended warm air unit heater discharges warmth directly into the space to be heated in a conventional cross-flow manner.  Offering space saving ‘off-floor’ mounting, they are a popular choice for heating commercial and industrial buildings.



Gas Heaters UK

Gas heaters cabinets are a popular heating solution to industry. Often floor mounted and can be use in warehouses, factory workshops and commercial units. Some models use butane, propane or liquefied petroleum gas, but natural gas is the most common fuel for this type of heater.



Gas Heaters UK

A condensing unit heater is fast becoming a main stay as a heating source in industrial and commercial sector as customers look to lower their energy bills and carbon footprint; these highly efficient, energy saving units are a popular heating solution and can be found in many applications. Below are just a few examples;-

  • Automotive workshops
  • Factories
  • Retail outlets
  • Sports facilities and halls
  • Warehouses
  • Workshops



Gas Heaters UK

Propane / LPG Direct Fired Heater


Perfect for heating Garages or workshops & construction sites, a propane space heater is direct fired which means it does not have a flue. Because of this, it is especially important that safety precautions are adhered to as propane  gas or LPG can be very combustible. These heaters need to be used in an area that is well ventilated and should only be used under direct supervision.



Gas Heaters UK

Indirect Gas Mobile Heaters – Propane or Natural Gas


Indirect gas fired  mobile  heaters are very high in terms of efficiency. They provide large volume of 100% clean, dry and fume free warm air. They are most suitable in places with limited ventilation like marquees, shops, event tents, food preparation areas or exhibition halls. They can be used with a variety of flexible hoses that make the warm air  spread effectively.



Gas Heaters UK

Gas Unit Heater – Natural Gas or LPG


Gas unit heaters are designed for use in space heating applications. Gas unit heaters are typically used in areas with high ceilings, and are exposed in the space to be heated. Gas unit heaters offer low installed cost, and are able to heat large volume areas without requiring extensive duct systems. They can be installed either vertically or horizontally and can also be supplied with a centrifugal fan.

So what ever your requirement for a heater, fired by gas , either natural or Propane / LPG , then we at Flexiheat UK , have the best range of  Gas Heaters UK  wide.

Should you require anymore assistance or information on our Gas Heaters , please don’t hesitate to contact our sales team on 01202 822221 or click here for our email contact form