Industrial Electric Heaters  – Output Range – 3kW to 110kW

Industrial Electric Heaters
Industrial Electric Heaters – We start with our “E Range” perfect for small and medium sized areas – Outputs from 3kW to 18kw

Industrial Electric Heaters  -The E range with outputs from 3 kW single phase to 18 kW 3 Phase, Flexiheat has a complete range of electric fan heaters to suit both the domestic and industrial electric warm air heating requirements for small to medium areas

The Kroll industrial electric heater “E3 model” is 240 volt, single phase electric heater and with its lightweight design is an ideal solution to heating smaller rooms ,offices, site huts etc.

The E8, E12 and E18 industrial electric heater models extend to a 3 phase heater (415 Volt) and are ideal  for the larger industrial and construction environments such as; workshops, nurseries, shops, exhibition rooms, warehouse heating, building sites, heat load testing, frost protection, production and manufacturing facilities.The E8 – E18 Industrial fan heater range come with adjustable thermostatic control,and high and low heat settings and all units come with thermal cut-out overheat protection. Insulated handles allow for safe movement and handling whilst the heater is still warm.

These Portable Electric Heaters provide comfortable heat in spring and in autumn or if there is a sudden onset of cold weather. They can be used as frost control heater to, thanks to their in-built thermostats.

Electric Space Heaters – Health & Safety

As no vapours,exhaust gasses or odours are given off , as well as no naked flame , these industrial electric heaters can be used in many applications that direct fired diesel or gas heaters cant.

Industrial Electric Space Heaters

Our 18 kW electric industrial heater offers the ability to heat up separate area’s from one heater or / and deliver warm air via ducting through a warm air hose. Please see our separate product page on this model.

Industrial Electric Heater Technical Data, Industrial Fan Heaters Technical Data

How to calculate what your heat requirement is for a given area ?

To establish what industrial electric heaters or heater you need, just do the following –

First calculate the volume of your building / area in metres cubed (m3)

Then multiply this by 33 Watts (W) per metres cubed , then dived by 1000 , and this will get you the result in Kilo Watts – (kW)

An example would be – 200 (m3) x 33 (W) divided by 1000 ( to get into kilo Watts ) = 6.6 kW Total Heat Requirement

This is a general “Rule of Thumb” calculation, and is based on a high insulation value ( U Value )

If you require any help in industrial electric heater sizing, please don’t hesitate to contact us, we’d be pleased to help.

Industrial Electric Heaters -Running Costs

Using a portable electric portable heater remains one of the most cost effective solution for providing emergency or supplementary heat for a particular space in your home ,office,site cabin or warehouse.

To work out an accurate running cost for an electric heater you can use the below calculation:

Calculating an accurate running cost can vary from room to room because of many factors for example,  number of doors and  windows, building condition, insulation levels  etc. However the following calculation can be used to provide a general idea:

Energy input (kW) x pence per kWh= running cost.

For example a 3kW fan heater run continuously (without stopping) for 1 hour would be:

3kW x 14p/kWh = 42p per hour

The calculation above is based on 0.14p per kWh – please check with your current electricity bill for the exact hourly rate you are currently paying.

This range of industrial electric heaters, are well made,durable and robust, everything you would expect from a German manufactured product –

  • economical:
    The heat is dispensed efficiently and in a concentrated way to the ambient air by a powerful fan.
  • convenient:
    The heaters does not use up any oxygen. They do not give off any unpleasant odours so they can be operated in rooms which have bad or even no means of ventilation.  Temperature can be adjusted and is controlled by a inbuilt thermostat. The unit can also be used to ventilate rooms as well.  They can be used  instantly where power is available
  • robust and safe:
    All appliances are VDE checked and thermally protected. The heating elements have a stainless jacket and the casing is manufactured from galvanised steel sheet, which is then stove-enamelled , resulting in a durable and robust unit
  • mobile:
    Thanks to their small dimensions, the electric fan heaters can be taken everywhere. You will find a place for them even in very confined space. Model E18 now also available as version “SH”, “S” for hose connection and version “H” for operation at high room temperatures for special duties such as thermal pest control.

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Premium Industrial Electric Heaters – Zinc Plated – Up to 20kW Output – Digital Control

We also supply a upgraded or premium industrial electric heater , called the “FHNXG” range. This range of unit heaters benefits from a zinc plated housing and a more capable control system. It has a digital control system that allows you to –

Delay start -Programmable On feature – This feature enables the user to postpone the starting time of the industrial electric heater by up to 99 hours.

Delay stop – Programmable Off feature – This feature enables the user to extend the operation of the industrial electric heaters by up to 99 hours.

Post ventilation – This feature (setting time between 1-9 minutes) enables the heater to cool down before eventually switching off. This saves and utilizes the energy to it’s maximum, as the residual heat is fully utilized, and blown into the area that is being heated.

Ventilation only mode – This unit can also be used in a ventilate only mode which is useful in the summer months to move hot or stagnant air.

Digital Temperature Control – These industrial electric heaters can automatically control the room temperature up to a maximum of 35 Degrees C. The heater will automatically come on , if the room temperature falls under the desired temperature you select ( up to and including 35 Degrees C)  , the heater automatically switches off when that temperature is achieved.

industrial electric heaters control panel

Control Panel for the “FHNXG” Industrial Electric Heaters

The “FHNXG” industrial electric heaters , benefit form a handle that makes moving and transporting the heater easy. This handle also also doubles as a security rail which prevents damage from being dropped or hit by another object, which can often happen on site , especially building sites.These industrial electric heaters are also stack-able, ensuring a small area is required if the units are put into storage whilst not in use, which is another handy feature of these electric heaters.

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A picture of an Industrial electric heater / industrial electrical heater/ industrial electric fan heaters from 6 kw to 20 kw output from Flexiheat UK

Technical Specifications of the “FHNXG”  Industrial Electric Heaters

Model 9kW15kW20kW
Output                                                                          kW6  / 97.5  /  1510   / 20
Mains Voltage                                                                 V400400400
Max. Mains Current                                                     Amps132126
Fan Diameter                                                             mm315315315
Air Circulation rate                                                    m³/h170022003000
Dimensions    ( L x W x H )                                         mm340 x 390 x 510530 x 390 x 510530 x 390 x 510
Weight                                                                           Kg’s7.5910
IP RatingIP44IP44IP44

We also do one unit which is 9kW , that is made with a stainless steel casing , and a higher IP rating of IP54. This unit is particularity suited to use in dry, humid , or any other location where a fire hazard is of particular concern, as well as in heating farm buildings etc, where IP54 is a requirement.This 9 kW Industrial electric heater has an inbuilt room thermostat to control the temperature and automatic protection against overheating.The stepless variable thermostat and accurately sized fan ensures an even temperature and good heat distribution.The heating elements and carrying handles are extra insulated and for increased safety a built-in thermostat which switches off in the event of overheating,  which needs to be reset manually in the event of it tripping- an added security feature .The maintenance free electric motors, stainless steel heating elements and ISO 9000 controlled production guarantee a reliable and long life for this Industrial electric heater.This heater is designated the “FHLB9KW” and the specification is as follows –

The FHLB9KW Stainless Steel Industrial Electric Heater, IP54 Rated, 3 Phase 400 volts

Output in (kW): 1.8 kW / 5.4 kW / 9 kW

Mains voltage – (V): 3 Phase x 400 volts

Max mains current -(A): 16 Amps

Air circulation – (m²/t): 700 / 1000

Fan diameter – (mm): 300

Dimensions L X B X H – (mm): 670 x 450 x 600

Weight -(Kg’s): 18

IP Rating – IP54

Mobile Industrial Electric Fan Heaters

There are two heaters within this industrial space heaters electric range , the first has a maximum output of 18kW , this industrial electric heater is designated the  FHEHT18 , or we have the FHEHT30 model, which will do maximum heat output of 30kW of output.Both of these require a 3 phase electrical supply , and should only be used in door or protected from the elements. These Industrial electric fan heaters can operate in heating mode (either full or half power) and in ventilation mode (with heat elements turned off) and can utilize a flexible warm air duct , of up to 15 metres in length as well as a remote thermostat and controller if so required by site conditions. or can be used in just a free blowing configuration.

These Industrial Electric Fan Heaters features are –

  • Thermal protection to protect the unit from overheating
  • They are equipped with wheels and handles for easy transport
  • They have both a heating and ventilation mode
  • A well made and durable heater
  • Are suitable for stacking – saving the space required for storage and are perfectly suited to the construction equipment rental market
  • You can duct the these heaters up to 15 Metres
  • There is an option of a external controller and thermostat
  • Optional frame protection kit ( see picture below ) which protects these industrial electric heaters against damage to the device as well as easier transportation by car or lifting by crane
  • Accessories such as warm air diffuser’s, warm air duct “Y” connectors ( which allow 2 warm air hoses to be connected), electrical extension cables ( in 5,10,15 or 20 metre lengths)

Technical data for the FHEHT18 Industrial Electric Fan Heater

Power Output : 9/18 kW – ( 30,708 or 61,416 Btu’s /Hour)
Air flow : 1,700 m3/h
Power supply : 3 Phase 400/50-60​ V/Hz
Rated current : 26 Amps
Plug: 32 Amp/5 Pin
Protection rate: IP24
Dimensions (LxWxH) [ in mm]: 475 x 715 x 615
Weight : 30 KG’s

Technical data for the FHEHT30 Industrial Electric Fan Heater

Power Output : 15/30 kW – ( 51,180 or 102,360 Btu’s /Hour)
Air flow : 3,500 m3/h
Power supply : 3 Phase 400/50-60​ V/Hz
Rated current : 43.5 Amps
Plug: 63 Amp/5 Pin
Protection rate: IP24
Dimensions (LxWxH) (in mm): 571 x 941 x 730
Weight : 45 KG’s

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Additional Accessories available for the “FHEHT” range of Industrial Fan Heaters include remote room stat, a remote heater controller and a heater protector frame

Industrial Electric Heaters Accessories,Industrial fan heaters accessories

Or for using these Electric Fan Heaters in conjunction with warm air hoses or ducts , with have the following accessories available – Warm Air Hose Splitter or Y piece and also Warm Air Diffusers

Industrial Electric Heaters Warm Air Diffusers,Electric Fan Heaters Diffuser

Both of these industrial electric heaters comply with the following standards: EN 60335-1, EN 60335-2-30, EN 62233, EN 55014-1, EN 55014-2 and meet the requirements of European directives 2006/95 / EC, 2004/108 / EC, 2011/65/EC.

Download Brochure for FHEHT Electric Heaters



Fully serviceable with full spare parts availability the our industrial range was conceived to offer the price benefits of a Chinese import coupled with German build quality, but UK built. All heaters in the range come with same heavy duty build and feature adjustable thermostats, mains plugs & leads, over temperature protection and full warranty as standard.Built to withstand industrial use using the same high specification of materials and production methods this extensive range has something to suit every application and is an ideal safe, clean, fume free alternative to gas and diesel.

FHE3  Industrial Electric Heater – 3kW  

Industrial Electric Heaters


  • Approx Airflow Rate = 423m³/hr
  • Fan Type = Radial
  • Sensible Heat Capacity = 10,236 BTU (3kW equivalent)
  • Max Heat Capacity (kcal) =  2625
  • Supply = 110v or 230v 50hz
  • Plug Size = 32A (110v) 13A(230v)
  • Sound (3m) =  45dB(A)
  • Spigot  = 200mm
  • Mobility = Portable
  • Remote Thermostat Optional
  • Dimensions HxWxD (mm) = 360x300x330
  • Weight = 10kG
  • Over temperature protection  = Yes
  • Max Ducting = 2m

FHVH3  Industrial Electric Heater – 3kW  

Industrial electric heater, industrial fan heaters

  • Heat Capacity:10,236 BTU (3kW equivalent)
  • Fan Type: C Forward Curved Impellar
  • Supply: 230v 50hz
  • Plug Size 13A
  • Mobility: Portable
  • Thermostat: Yes
  • Dimensions HxWxD (mm): 558 x 362 x 256
  • Weight: 13kG
  • Over temperature protection: Yes

The all new FHVH3 is a powerful 230v heater designed for use at events and other less industrial applications.By using the very latest in EC fan technology with a
powerful forward curved impeller and directional lourve, the FHVH3 delivers warm air at much greater velocity than traditional 3kW fan heaters. A unique new plenum design
also ensures maximum heat transfer from element to air for increased heat and efficiency.

With its stylish design the FFVH3 can stand unobtrusively on the side lines of an event whilst the industrial grade 1.2 mm steel body and oven hardened finish allow it to
withstand the rigours of daily site use. Other useful features include thermostatic control, recessed control and over temperature safety control.

Download FHVH3 Industrial Electric Heater Brochure

FHE12 Industrial Electric Heater – 9kW

Industrial electric heater, industrial fan heater


  • Heat capacity 30,708 BTU  / 9kW
  • Airflow Rate = 1,200m³/hr – Pressure 85 PA – Fan Type = Radial
  • Supply – 400v / 50hz – Plug Size 16Amp
  • Sound level at 3 metres –  55dB(A)
  • Internal Thermostat Fitted as Standard
  • Optional Remote Thermostat available
  • Dimensions HxWxD (mm) 425 x 345 x 295
  • Weight – 15 kG
  • With Over temp protection as standard

FHE13 Industrial Electric Heater  – 9kW

Industrial Electric heaters


  • Heat capacity 30,708 BTU / 9kW
  • 16A 400v 3ph supply
  • 900m3/hr Airflow
  • Adjustable Thermostat
  • Can duct 10 Mtrs in total lenght

A powerful 16 Amp heater designed to deliver 13.9 kW of sensible heat. Built to withstand the rigours of regular site use with features including an adjustable thermostat and over temperature protection as standard while the optional single or double spigot outlets can provide warm air either along 10 Mtrs of ducting or to two separate area’s. A clean, odourless and fume free alternative to gas and diesel heaters.

FHE23 Industrial Electric Heater – 18kW

Industrial electrical heater, industrial fan heaters


  • Heat capacity 61,416 BTU / 18kW
  • Airflow Rate = 1,850m³/hr – Pressure 90 PA – Fan Type = Radial
  • Supply – 400v / 50hz  – Plug Size 32Amp
  • Sound level at 3 metres –  60dB(A)
  • Internal  Thermostat Fitted As Standard
  • Optional Remote Thermostat available
  • Dimensions HxWxD (mm) 415 x 345 x 504
  • Weight – 20 kg
  • With Over temp protection as standard

FHE29 Industrial Electric Heater – 18kW

  • Heat capacity 61,416 BTU / 18kWIndustrial electric fan heaters,industrial electric space heaters uk
  • 32A 400V 3ph supply
  • 1800m3/hr Airflow
  • Adjustable Thermostat
  • Dimensions HxWxD (mm) 415x345x504
  • Sound (3m) 60dB(A)
  • Weight 20kG

A very powerful 32A heater that offers 29kW of sensible heat. Designed and built to withstand the rigours of regular site use comes complete with features including an adjustable thermostat, over temperature protection and lockable castors while the optional single and multiple outlets allow the FHE29 to deliver warm air either along up to 15M of ducting or to up to 4 separate areas. A clean, odourless and fume free alternative to gas and diesel heaters.

Download FHE29 industrial Electric Heater Manual

FHVH29 Industrial Electric Heater – 18kW

  • Fan Type: Forward Curved Impeller
  • Heat Capacity: 61,416 BTU / 18kW
  • Ampage: 22A
  • Supply: 400v 50hz
  • Plug Size: 32A
  • Mobility: Portable
  • Thermostat: Yes
  • Dimensions HxWxD (mm): 1270 x 635 x 355
  • Weight: 40kG
  • Overtemp protection: Yes

With is aesthetically pleasing design , the FHVH29 vertical event heater designed to subtly blend in to any environments from  marquees to meeting rooms. Attractive, slim and finished in a tough epoxy powdered white with a matching white adjustable louvre. The specially configured air moving system releases over 1,600 m³/hr (1,000 cfm) of heated air

Download FHVH29 Industrial Electric Heater Brochure

FHE42 Industrial Electric Heater – 42kW

  • 42 kW Nominal Output Heater – With two stage output – 21 kW or 42 kWindustrial electric blow heaters,industrial fan heaters,industrial electric heaters
  • 63 Amp , 400 Volt,  3 Phase supply
  • Airflow Rate – 4,000 M3/hr
  • Maximum Ducting Length –  30 Mtrs
  • Spigot Diameter –  500 mm
  • Weight – 130 KG
  • Adjustable Thermostat
  • Fork pockets -making the unit easy to transport
  • Lockable castors – which make this commercial electric heater easy to move
  • Sound Level at  3 Mtrs –  73dB(A)
  • Dimensions HxWxD (in mm) – 1000 x 700 x 1100

The most powerful 63A heater available. Designed and built for industrial use the FHE42 features variable heat output, 24V control circuit for safety, remote thermostat socket, spigot, over temperature protection and an auto run on as standard.

FHE63 Industrial Electric Heater – 63kW

  • 63 kW Nominal Output HeaterIndustrial electric heater,industrial electric space heaters
  • 125 Amp ,  400 Volt,  3 Phase supply
  • Airflow Rate – 8,000 M3/hr
  • Maximum Ducting Length –  50 Mtrs
  • Spigot Diameter –  500 mm
  • Weight – 200 KG
  • Adjustable Thermostat
  • Fork pockets -making the unit easy to transport
  • Lockable castors – which make this commercial electric heater easy to move
  • Sound Level at  3 Mtrs –  75dB(A)
  • Dimensions HxWxD (in mm) – 1000 x 700 x 1690

This Electric Commercial Heater , with it’s output of  63kW has been designed for heavy duty applications. Ideal for use in shipping, surface coating or large scale heating applications; the FHE63 features a powerful contra rotating fan motor for pumping heat down long lengths of ducting, a heavy duty build, thermostatic control, over temperature protection and lockable castors.

FHE110 Industrial Electric Heater – 110kW

  • 110kW heaterelectric heater industrial,industrial electric fan heaters,industrial electrical heater
  • 200A 400V 3ph supply
  • Adjustable thermostat
  • Multistage switching
  • Fork pockets
  • Lockable castors
  • Heat Capacity 375,320 BTU

An incredibly powerful heater originally designed for use in larger industrial and commercial application. The FHE110 delivers 9000 m³/hr of heated air and features heavy duty materials, multi-stage switching for variable output, adjustable thermostat, over temperature protection and auto run on as standard

Industrial Electric Heaters / Industrial Fan Heaters for Sale UK & Ireland 

We think that we have the best range of Industrial Electric Space Heaters in the UK.Should you require any further assistance with our Industrial Electric Heaters /  Industrial Fan Heaters /Industrial Electric Blow Heaters  , please click here to contact us via email or call us direct on 01202 822221