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












Industrial Space Heater UK – Your Options

Industrial Space Heater

Industrial Space Heater – Is the heating bill for your plant or warehouse too high? What about cold dock door areas and unbalanced temperatures? Is negative building air pressure a problem? Have you experienced employee complaints and lost productivity from heating or indoor air quality problems? Do you have high maintenance costs for existing heating equipment?

There are only a few common problems that result from choosing the wrong heating system, using obsolete heating/ventilating equipment or simply miscalculating space heaters

Annual space heating costs are a significant part of operating budgets for industrial units, manufacturing plants and large warehouses. Selection and application of the proper space heaters can reduce annual energy costs more than 60% and increase company profits.

What factors determine the best space heating system? Everyone wants a heating and ventilating system that meets their unique requirements at the lowest total cost.

Prior to selecting a heater you must first decide the heating/ventilating requirements and understand all the cost factors that determine the true lowest total-cost solution for a specific facility.


Industrial Space Heater and Space Heating Systems

A gas-fired heating system usually offers the most cost-effective way to heat industrial buildings. Oil-fired and electric heaters are sometimes used for specific space heating applications or when gas is unavailable.

Gas-fired space heating systems are classed as being either direct fired or indirect fired.

Indirect-fired heating systems use a method of heat transfer, such as a heat exchanger, which lowers overall energy efficiency. A flue is needed to vent the products of combustion outside the building. The inside air is re-circulated with little or no provision for ventilation with outside air. There are two popular types of indirect-fired heating systems.

1.Boiler systems (hot water and steam) have historically been a major source of industrial heat and power. These centralized systems were often used for space heating when energy costs were low, or when steam was a by-product of boilers used for nearby process heating applications.However, industrial boiler heating systems are becoming a thing of the past due to rising energy prices, poor efficiency, uneven heat distribution and high maintenance costs. Many large facilities are now replacing space heating with boilers with efficient gas or oil fired space heaters and use the energy savings to pay for the new equipment.Although condensing boiler technology has improved greatly over the last decade, and “wet systems” are still very popular.


gas condensing boiler

Gas Condensing Boiler , fully modulating with efficiencies of up to 109%

For more information on our range of condensing gas boilers or condensing oil boilers , please click on the links  for further information on our ranges. These “wet heating systems” often use a unit heaters or sometimes referred to as a  hot water unit heater or steam unit heater ( if utilizing steam as the heating medium ). These are pictured below , and are basically an industrial radiator with a fan behind them that blows out the warm air.

Industrial Space Heater

Hot Water or Steam Unit Heaters




2.Unit heaters are a proven method of heating small, open spaces. Multiple heaters are installed around the perimeter of a building to match heat losses. The benefits of unit heaters include redundancy in case one unit fails, intermittent fan operation that reduces electrical costs and installation on the ceiling or mounted on walls to not take up floor space. Due to a limited air throw, their efficiency can decrease with increased height above the floor.


Industrial Space Heater

Standard Gas Unit Heaters – Efficiencies of 91%

For more information on our range of standard gas unit heaters, click here for our standard range or here for our premium range , which has a stainless steel heat exchanger and combustion chamber

The initial installed cost is relatively low for small facilities that only require a few  industrial space heaters but the costs can be higher for large buildings that require multiple heaters. A proportion of heat and energy will escape up the flue. Typical overall efficiencies can vary from 85% to 91%, and these industrial space heaters can be used in a room sealed configuration , meaning that the combustion air that is required is taken from the external air to the building.  This industrial space heater technology has moved on greatly over the last 5 years or so , with the development of  warm air condensing technology , which has resulted in this industrial space heater range achieving efficiencies from 96.6% to 108% , with a pre-mix gas burner with low NOx emissions (class 5) form more information on this range click here.Both the standard or condensing range of  these industrial space heaters ( commonly known as unit heaters ) can be fired by either natural gas or propane gas. There is also an option to have a oil fired suspended industrial heater , please click here for information on this range , which goes from 52kW to 209kW.



Unit heaters are often used in partnership with make up air heaters in industrial plants or warehouses with constant or variable exhaust loads to provide ventilation.

Industrial Space Heater – Floor Standing Option

If floor space is available, quite a few people opt to have a floor standing industrial heater, as these are often more easily installed , as they are at low level , negating the need for lifting equipment and other associated problems when installing an industrial space heater , pipework etc at high level. They are also easier to service and maintain  at low level , something which needs to be considered when selecting your appropriate industrial space heater. These can be fulled by either gas ( both natural gas or LPG , and even waste oil , bio oil or vegetable oil with one of our multi oil burners ).Here is an example of one looks like , with standard distribution heads –


Industrial Space Heater


For more information on these Industrial space heater ranges , please see our products page here

Industrial Space Heater – Selection factors 

  • How important are balanced temperatures throughout the building, from wall-to-wall and floor-to-ceiling?
  • Where will the heating system be located? Will it consume floor, ceiling, or racking space that could be used for manufacturing or storage?
  • What are the facility’s indoor ventilation requirements and air quality? How much fresh air is required by industry guidelines to dilute contaminants generated by LP forklift trucks, welding fumes, and other manufacturing processes?
  • Is spot heating or zone heating required?
  • How will the loading bay areas be heated and how fast must temperatures recover? or can I use a heated or ambient air curtain ? see here for more info –
  • What are acceptable noise levels?
  • Is makeup air needed to compensate for exhausted air? Or shall I use room sealed heaters ?

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

Warehouse Heaters UK – What are you options ?

Warehouse Heaters

Warehouse Heaters – It’s essential that when you’re working in a warehouse, it is heated in a sufficient way in order for your business to run correctly and smoothly. Without the correct heating, your warehouse wouldn’t be a suitable place for your employees to be working in.

The Warehouse Itself

Deciding on the right heating system will depend on several factors, such as the layout of the warehouse. Having big doors constantly opening and closing makes it difficult to control the temperature and, consequently, makes it more difficult to keep it at adequate levels. If your warehouse is very big, your heating needs will vary, compared to a smaller warehouse. You might just need heating in specific areas, so it’s important to make sure you’re getting the right solution for your warehouse.

Warehouse heaters – their applications  

It’s important to ensure that your warehouse is well heated throughout the winter to make sure your employees have a suitable working area.  As the colder days and nights begin to come in, your warehouse will probably require to be warmed up. Some warehouses will need the whole place warming up, whereas others will just require a particular area warming up.

There’s a number of different ways you can heat your warehouse.

Types of warehouse heaters

The next step in heating your warehouse is choosing a heating system. You need to find the solution that works best for you, so it’s important to note the differences between types of heating, so that you know what you have to work with. Heaters tend to include:

Floor standing cabinet heaters – if you prefer, or if your space isn’t at a premium, you might want to check out floor standing heaters, which are available in a number of possible installations: vertically, horizontally or even on the exterior of your warehouse – this is because these heaters have several heat outputs and burners, so their versatility makes them incredibly useful in the workplace. Floor standing heaters can be equipped with either Oil, Gas or in some case Multi / Waste Oil burners depending on the type of fuel source is preferred. Floor standing warehouse heaters are the easiest of all to maintain, as access is granted at any time, without the need of scissor lifts or any scaffolding etc, that you may need when having suspended heaters to service. Flexiheat have a wide range of floor standing cabinet heaters to suit any application


warehouse heaters

Warehouse Heaters – Gas, Oil or Multi Oil Fired


For more information on the ranges available to you , please see our products page here

Suspended heaters – perfect if you don’t have a lot of space, as they are out of the way of daily traffic. With plenty to choose from in terms of design, suspended heaters are also easy to install and maintain. Suspended heaters come in all different shapes and sizes and can run off either Gas, Oil or with a wet system, whereby a boiler sends heated water to hydronic (or water fed ) unit heaters , which are basically industrial radiators with a fan behind them , that blows out the warm air.These unit heaters can also be supplied to work on low pressure steam as well as hot water, should you have steam as a resource available as a heating medium.

warehouse heaters

Warehouse Heaters – Gas – Suspended

For more information on the ranges available to you , please see our products page here


warehouse heaters

Warehouse Heaters – Oil – Suspended


For more information on the oil suspended heaters available to you , please see our product page here


Warehouse Heaters

Warehouse Heaters – Hydronic or Water Fed Unit Heaters

For more information on the hydronic unit heaters available to you , please see our product page here


Warehouse Heaters – Spot heating in a warehouse

There are occasions when only a single spot within a warehouse or factory needs to be heated. For example:  an admin desk, a person on a production line or a lunch break area. Probably the most common type of spot heating is from an electric or radiant heater, which are portable or mobile , and can used in various locations as and when the heat is required.

warehouse heaters

Warehouse Heaters – Spot Heating with Electric Infrared Heater



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

Diesel Space Heaters – Special Offer


Diesel Space Heaters


Diesel Space Heaters -As the temperature drops again and another cold snap hits us, working in an unheated space becomes very difficult. Flexiheat currently have a special offer on a range of diesel space heaters (Direct Fired) to  help spread the warmth and increase your comfort


Ideal for –Diesel Space Heater

  • Workshops,
  • Factories,
  • Warehouses,
  • Builders,
  • Greenhouses,
  • Decorators,
  • Garages etc.

These diesel space heaters are suitable only for use in well ventilated areas & is not suitable for applications where a naked flame is deemed not safe.

These units are German manufactured, having the advantage of being well engineered and are very robust, unlike many of our competitors models, which are manufactured in the Far East


The range we have in stock currently are;-


GK15 – 15kW

Kroll GK15 Direct Oil Fired Mobile Heater – Output 15KW / 51,180 Btu’s per Hour

Unit Specification / Details –

  • 240 Volt / 1 phase
  • Highly Efficient – 100 % Efficiency
  • Heavy duty construction
  • Stainless Steel combustion chamber – for long service life


GK20 – 23kW

Diesel Space Heaters Unit Specification / Details –

  • 240 Volt / 1 phase
  • Highly Efficient – 100 % Efficiency
  • Include a 21 litre self-contained fuel tank
  • Maximum fuel consumption – 1.97 l/hour
  • Heavy duty construction
  • Stainless Steel combustion chamber – for long service life


GK28 – 28kW

Diesel Space Heaters Unit Specification / Details –

  • 240 Volt / 1 phase
  • Highly Efficient – 100 % Efficiency
  • Include a 30 litre self-contained fuel tank (enough for 12.5 Hours of continuous running)
  • Maximum fuel consumption – 2.37 l/hour
  • Has an Air rate of – 500 metres cubed per hour
  • Heavy duty construction
  • Stainless Steel combustion chamber – for long service life


GK40 – 43kW

Diesel Space Heaters Unit Specification / Details –

  • 240 Volt / 1 phase
  • Highly Efficient – 100 % Efficiency
  • Include a 46 litre self-contained fuel tank (enough for 12.5 Hours of continuous running)
  • Maximum fuel consumption – 3.64 l/hour
  • Has an Air rate of – 1050 metres cubed per hour
  • Heavy duty construction
  • Stainless Steel combustion chamber – for long service life


GK60 – 61kW

Diesel Space Heaters Unit Specification / Details –

  • 240 Volt / 1 phase
  • Highly Efficient – 100 % Efficiency
  • Include a 46 litre self-contained fuel tank (enough for 12.5 Hours of continuous running)
  • Maximum fuel consumption – 4.85 l/hour
  • Has an Air rate of – 1,300 metres cubed per hour
  • Heavy duty construction
  • Stainless Steel combustion chamber – for long service life


Download Special Offer Brochure


Portable Dehumidifier

Portable Dehumidifier – the battle against damp

Whether in the living room, in the bedroom or on the building site: an excessively high humidity in the surrounding air is almost always associated with the formation of condensation water. The water vapour contained in the air deposits on cool surfaces and causes undesirable condensation water, which can cause considerable damage to the immediate environment. Corrosion and mould formation are the most frequent consequences and not only attack materials and walls but also pose a health risk to you and your fellow human beings.

If you want to prevent the formation of condensed water and its negative effects on man and the environment, the use of a dehumidifier is indispensable. Only a dehumidifier helps you quickly and efficiently remove the surplus water vapour from the ambient air. Reduce the humidity to an appropriate and harmless degree and consciously ensure a comfortable living environment.


portable dehumidifier

The right Portable Dehumidifier for your home

Do you have problems with damp walls, mouldy wallpaper or water formation on the window pane? Do not hesitate, but use a portable dehumidifier to lower the humidity in your home. Provide rapid and long-term remedial action to prevent damage to your building structure or health.

Dehumidifying performance

The dehumidifying performance is an important feature and should be considered for every room dehumidifier. This value specifies how much moisture can be removed from the ambient air in a certain time interval. The dehumidifying performance is expressed in the unit of litres per day (l / d) and is typically in a range between 10 and 60 litres per day in a smaller portable dehumidifier. In the run-up to a new acquisition, you must therefore determine the room size as well as the moisture content prevailing there and then select a portable dehumidifier with a corresponding dehumidifying capacity.

Using a Portable Dehumidifier in basements and cellars

A dehumidifier can also be used for basements and cellars. These rooms also have a high humidity risk; since little is aired, are often closed, and the dampness rapidly settles on cold walls. This ensures a perfect breeding ground for mould.

For basement and cellars , it is also advisable to install a portable dehumidifier. To prevent moisture damage and mould. The larger the space, we recommend a room dehumidifier with more recording capacity. A Basement or living spaces have different demands on a dehumidifier. A cellar with moisture problems is typically more moisture entry and is not so well heated like a living room. Often, even moisture, which from the summer into the walls, must be dehumidified in winter. In living areas, it is important that the humidity new entry is eliminated as quickly as possible to prevent mould growth. In addition, a low humidity is also useful, because less energy is required to heat the rooms.

Therefore, typically dehumidifiers with a higher capacity are needed in the basement. To reflect the lower ambient temperatures, it is important that the average evaporator temperature is low enough to dehumidify

Flexiheat offer a wide range of portable dehumidifiers, suitable for basements and cellars. Please click here for more information on our portable dehumidifier range

Portable Dehumidifier in a Garage

Rust and corrosion is your car’s biggest enemy. And they are hiding in your garage – in the form of moisture in the air. Together they cause steel and iron to rust. And what happens next, you know only too well. Rust will make your car’s material absorptive and you will have to invest la considerable amount of money to get it back to working order.  So , in order to ensure that your well-loved car is protected, not only do you need an extensive care routine and to have it routinely  inspected, but it is equally important to have a good garage environment, where you know that your car is being well looked after. And at the end of the day, it all comes down to the level of relative humidity which should not be above 50%. Below this level it is virtually impossible for rust to form. But be advised! If the level should rise, corrosion will rapidly increase, so use a portable dehumidifier to prevent this.

portable dehumidifier


Around the clock protection

The reason for moisture build-up on your car in the garage is relatively easy to understand. When it is warm, the atmosphere absorbs moisture over the course of the day.  Overnight, when there is a drop in the temperature, any moisture created will then settle on your car. The reason for this is simple: Cold air holds less moisture. If the air temperature decreases by as little as 10°C, the relative humidity will rise by over 30%. There is also another problem. The body of your vehicle is full of hidden crevices and hollow cavities.  Moisture resides in these crooks and crannies and in the hollow cavities where the corrosion conditions are ideal

Flexiheat offer a wide range of dehumidifiers, suitable for garages.

Please click here for more information

A Portable Dehumidifier in a shed or garden house

Condensation and damp problems are not solely limited to the home environment but can also occur in sheds and garden houses.

The root cause of damp in sheds is often as a result of a lack of heating and ventilation, as sheds are predominantly a cold environment. In an unheated closed space such as a shed the air temperature rises and decreases very quickly, sometimes the dew point is reached and dampness advances out of the air and onto to the items that are being stored, making them damp.

By winter the temperature often does not rise enough again to dry out this dampness causing items to become damaged. Many people find their garden tools rusted, or when opening their shed or garden house experiences a frosty, stale smell or even mould.portable dehumidifier

To ensure that the garden tools and garden furniture stored in a shed are well protected over autumn and winter, it is important to keep it dry in order to avoid corrosion and mould. But, how do you create a dry space, which is exposed continuously in damp and cold?

Firstly it is important to make sure that the shed or garden house is inspected from outside. Joints, cracks, or holes must be repaired, otherwise water or moisture would be absorbed in the rain or moisture and moisture damage could occur.

Since the shed or garden house is potentially closed for a long period and has little ventilation, it would be advisable to place a room dehumidifier in there. It will regulate and control the excessive moisture continuously. This will help prevent too much moisture in the room while at the same time preventing mould and corrosion. Garden furniture and gardening equipment can then be stowed away in a dry damp free environment

The air in the rooms should not be too dry, but not too moist. This applies to industrial and commercial as well as to private use. Because of a balanced indoor climate, not only the building fabric and sensitive products but also the human being. The professional dehumidifiers from Flexiheat are suitable for all drying applications and are therefore clean and reliable. The TE & TK industrial dehumidifier range are used to ensure optimal production and product safety as well as the value of machines, inventory and buildings. They feature flexible and powerful dehumidification, even at low dew points. Compact, lightweight and stackable, and at the same time powerful in dehumidification:

Flexiheat offer portable dehumidifiers that are the economical solution to prevent moisture, mould, mud and smells, while at the same time producing a healthy living environment.

For more information on our Portable Dehumidifier range, please click here or here or alternatively visit our product page or you can contact our sales team on 01202 822221



Industrial Heaters

Industrial heaters are frequently used in almost all the industries today right from warehousing, manufacturing , to food processing. There is a variety of industrial heaters that serve different purposes. Being an unavoidable necessity, it is very important for business owners to install a warming solution in their factory premises to serve their purpose.

Installing them may be an easy task as you simply order the supplier or dealer 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 heating devices-

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 heaters on the market based on fuel types

Industrial Heaters – Gas Heaters and Propane(LPG) Heaters

Gas heaters and propane heaters burn natural gas, propane, liquefied natural gas (LNG) or other gaseous fuels to generate heat. The first 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. Gas heaters and propane heaters often use similar designs.


Industrial Heaters

Performance Specifications

Specifications for natural gas heaters and propane (LPG) heaters include maximum temperature, heating capacity and maximum air flow. There are two parameters for maximum temperature, maximum air temperature and maximum operating temperature.

The maximum operating temperature for gas heaters is the highest temperature that the heater’s coating or protective cover may reach.

The maximum air temperature, as its words suggest, is the maximum temperature of the air exiting from the heater.

Heating capacity is the wattage that gas heaters and propane (LPG) heaters can deliver.


Gas heaters and propane heaters differ in terms of insulation. Choices for insulation include ceramic, magnesium oxide, fluoropolymer, mica, mineral and fiberglass.

Industrial Heaters – Applications

The variety of different applications for gas and propane heaters include annealing and heat treating, drying, curing and tempering, melting, and the heating of gases and vapours. Gas heaters and propane heaters are also used to heat clean water, high purity waters and process waters, lightweight oils and degreasing solutions; heavy and medium weight oils, caustic solutions and mild and severe corrosive solutions.

Industrial Heaters – Features

There are many optional features for gas heaters. Some products are indirect-fired, corrosion resistant, finned, and explosion-proof or can be controlled by a microprocessor. Others are designed to provide dynamic power regulation and for cryogenic applications. They can feature custom designs or have an encased coil for maximum heat transfer. Gas heaters can also be fitted with an internal temperature detector, a grounding wire, and multiple / independent timing controls. Other additional features may also include overheat protection, thermostat control; portability and approval by the relevant authority i.e  British standard or European Standard .certification is available from the manufacturer.

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

Industrial Heaters – Oil Heaters and Kerosene Heaters

Oil and kerosene heaters burn liquid petroleum products to generate heat. They consist of metal columns with cavities and a heating element. Inside these cavities, oil or kerosene flows freely around a heating element. This element, which is located at the bottom of the heater, transfers heat through the fluid in a process called convection. The oil or kerosene acts as a heat buffer or reservoir and provides both a relatively high specific-heat capacity and a high boiling point. Because of its high specific-heat capacity, the oil or kerosene accumulates a large amount of thermal energy in a small volume. This high boiling point allows the fuel source to remain in the liquid phase, and means that oil heaters and kerosene heaters do not have to be high-pressure vessels.

Industrial Heaters -Types

There are many different types of oil and kerosene heaters. The variety include air, band, coil, and cable heaters; drum, duct, and enclosure heaters; and flexible, forced-air, immersion, and induction heaters. Cartridge, cast-in, ceramic fibre, and circulation heaters; Heat torches are forced-process air heaters that may burn oil or kerosene. Oil and kerosene heaters also include over-the-side, radiant flat panel, infrared (IR) and radiant reflective process heaters. Radiant heater elements are used with both radiant reflective and radiant flat panel heaters. Other types of oil and kerosene heaters include room or space heaters, steam injection heaters, along with strip, tubular, and water heaters.

Industrial Heaters


Oil and kerosene heaters transfer heat to a room at a slower rate and over a longer period of time. Using the liquid petroleum as a heat reservoir, they transfer heat via conduction and radiation. Typically, the columns of oil and kerosene heaters are made of metal and constructed as thin fins. In this way, the surface area is large in relation to the volume of the heat reservoir.


Specifications for the heating element include length or height, depth or thickness and width or diameter, some oil and kerosene heaters use single-phase or three-phase power. Others require AC voltage. Typically, industrial heaters use AC voltage instead of DC voltage.


There are a variety of different applications for oil and kerosene heaters. Examples include;

  • Drying,
  • Melting,
  • Annealing or heat treating,
  • Curing or tempering
  • Operations with gases and vapours,
  • Clean water heating

Oil and kerosene heaters are also used to heat process and high-purity waters, lightweight oils & degreasing solutions, heavy &  medium weight oils, mild & severe corrosive solutions, caustic solutions, and liquid paraffin. Depending on the application, insulation options are also important to consider when selecting an oil or kerosene heater.


For more information of our range of oil heaters, please click here

Industrial Heaters – Electric Heaters

Common electric heating coil Electrics heaters generate heat by passing an electric current through a high-resistance material. These heating devices have been adapted for commercial, industrial and consumer applications.

Electric heaters radiate heat with the use of a flat panel emitter, radiant reflective element, tubular element, flexible heater element or other type of heating element. A heating element is usually made up of a coil, ribbon (corrugated or straight), or strip of wire that gives off heat similar to a lamp filament. When an electric current passes through it, it glows red hot and converts electrical energy into heat.


Heating elements are mostly either iron-based or nickel-based.  Nickel-based heating elements are typically made of nichrome, an alloy that consists of about 80% nickel and 20% chromium. Nichrome is a popular and common material for heating elements because of its high melting point of 2,550°F (1,400°C)

It also will not oxidize at high temperatures and does not expand much when it heats up. It also retains a consistent resistance of about 10% between ambient temperature and maximum operating temperature.


Industrial Heaters


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

Industrial Heaters – Applications

Electric 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 applications can utilize much higher wattages and industrial electrical heaters can be used for applications such as heat treating, annealing, melting, and the heating of all types of process fluids.

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

Industrial Heaters – How to calculate how much heat you require

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. Below you can download our heat loss calculation sheet which shows you how simple it is

Download Heat Calculator

Workshop Heater

Military Grade Warm Air Mobile Heaters

Military Grade Warm Air Mobile Heaters – Here at Flexiheat UK, not only do we don the standard mobile warm air heaters , for construction sites , the rental industry , marquee heating etc , but we also do more demanding requirements , that you often find that the armed forces require. These tend to be that the units have to be able to dropped from height, thus ensuring that they can resist so many “G” force , can run on jet fuel , as well as the standard gas oil  / kerosene or natural gas / LPG Gas . Whatever the requirements , we can supply warm air mobile heaters to for-fill these tasks . We keep our client list confidential as you can appreciate , but if you require any military grade mobile warm air heaters , then we are the people to deal with.

Military grade mobile warm air heater


The picture above , shows one of the mobile warm air units that we have produced for an armed forces nation , and shows one the bespoke things that we can do , for example the colour , which you can specify etc.

To be honest , our standard warm air indirect mobile heaters , the “M “range, have many of the features of the military grade units which are designated as our “MM” range, in that they can be used down to temperatures as low as minus 20° C etc , and our “MM” range of Military grade warm air mobile heaters are just adaptations of these units  , with bespoke requirements suited to each individual customer.

Below you can see one of our military grade warm air mobile heaters, coupled up with two warm air flexible air hoses on the outlet side , and two re-circulation air inlet hoses on the inlet side. This configuration will ensure that the area being heated , will not only heat up faster , but will mean that fuel requirements can be 25 – 30% lower compared to units working with fresh air taken from the environment

Military grade mobile warm air heaters



For more information on our range of warm air heating solutions, please click on our main products page here .  Alternatively, please give us a call on 01202 822222 and our dedicated sales team will be happy to offer advice and assistance or contact us by mail by clicking here

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