BN Thermic, Commercial and industrial electric heaters and controls

EFC Fan Convector Heater
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EFC Fan Convector Heater

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EFC Fan Convector Heater

EFC Fan Convector Heater

  • Reliable, safe and robust means of heating a public area
  • Ideally suited for use in schools as well as community halls, corridors etc.
  • Exceptional build quality for long life and peace of mind
  • High and low settings for both kW output and fan noise
EFC Fan Convector Heater - Front view with plinth

EFC Fan Convector Heater - Front view with plinth

EFC Fan Convector Heater - Access Key

EFC Fan Convector Heater - Access Key

EFC Fan Convector Heater - Front panel opened

EFC Fan Convector Heater - Front panel opened













Optional Plinth





Recommended wall-mounted thermostat

Select from the following or click on the ‘control’ tab for more options:






Standard room thermostat 10A



Tamperproof thermostat 20A



Programmable thermostat



Tamperproof thermostat (industrial grade)

Technical Specification




Grey with black inlet and outlet grilles


Epoxy polyester powder coating


1mm steel case

Aluminium safety grilles

Key lockable front panel

Heating Element

Nickel chrome resistance wire on ceramic former


Factory installed 230V fused control circuit

Factory installed contactors

Side mounted switch with off/low/high settings

Remote wall-mounted thermostatic control recommended (suitable terminals are provided)

Overheat Protection

Two ‘high’ and two ‘high-high’ over-temperature devices fitted


Generally floor mounted and securely fixed to wall

Optional 100mm high plinth available (EFC-P)

Maximum operating ambient temperature: 30°C


2 year

Performance Data


230v 1ph

Output (low setting)


Air flow (low setting)


Noise estimate (low setting)


Output (high setting)


Air flow (high setting)


Noise estimate (high setting)


Physical Data

Dimensions (mm)

Weight (Kg)









Optional plinth (EFC-P) will add 100mm to height

Features and Benefits


Feature Benefit
Heavy gauge steel construction with epoxy paint finish

Built to withstand the rigors of a public area such as a community hall or school

Rounded corners

Reduces the chances of harm to public

Key lockable front panel (key provided)

Security in public areas

Powerful fan motor

Quick warm up and even temperature distribution

Integral contactors and fused control circuit

Keeps external wiring to a minimum and reduces installation time.  Provides a simple means of connecting to a remote thermostat.

Side mounted switch

Simple method of switching between ‘high’ setting for quick warm up and ‘low’ setting for economy and reduced noise.

Auto-reset over-temperature devices

A safety feature, ensuring that the heater is switched off should the air flow become obstructed

‘Pencil proof’ inlet and outlet grille

Prevents personnel from touching fan blades or heating elements

Optional 100mm plinth

Reduces the chance of dust being drawn in through the inlet grille

Allows for easier floor cleaning

Creates a recess for standard height skirting board


How it Works

The EFC fan convector heater is designed for efficient space heating in large spaces and is particularly suited to public areas.

The heater’s powerful motor draws air through the air inlet at the base of the front face of the unit, over the heating elements and out through the air outlet at the top of the front face of of the unit.

An EFC fan heater requires a 230V 1ph supply with electrical terminals located behind the front cover.  A fused control circuit, including a pair of contactors, is built into the heater.

Because the EFC’s fan moves a high volume of air, the temperature rise for any given ‘pass’ is not particularly high.  For this reason the EFC is not suitable for ‘spot heating’ specific targets within poorly heated or unheated area.  However this characteristic makes the EFC ideally suited to raising the temperature of large volumes of air.

Where it is used

The EFC fan convector heater is extremely robust and secure making it ideal for public areas.  Probably the most common application is in schools however the EFC is well suited to entrance areas, corridors, community halls etc.

How it warms a space

The key to the EFC fan convector heaters effectiveness is air circulation.  As previously stated, the temperature rise across the heating elements in a single ‘pass’ is nor especially high.  However the EFC fan convector heater moves such a high volume of air that it quickly ‘processes’ the air within the building raising the air temperature and providing an even temperature distribution.

How it is mounted and positioned

EFC fan convector heaters are generally floor mounted and securely fixed to a wall.  It is often desirable to use the optional 100mm high plinth.   The plinth will reduce the chance of dust being drawn in through the inlet grille, allows for easier floor cleaning and create a recess for a standard height skirting board

When a single heater is installed, it should be mounted on the longer of the walls and as centrally as possible.  In larger spaces where more than one heater is needed, the heaters should be evenly distributed.

Safety features

The EFC fan convector heater has a safety grille on both air inlet and outlet making it impossible for personnel to touch the fan or heating elements.

The control circuit incorporates a number of over-temperature devices which will isolate the heating elements should the airflow be obstructed.

Control concepts

The EFC fan convector heater has a side-mounted switch enabling the user to switch the heater on and off and to select high (6kW) or low (3kW) outputs.  The lower setting will produce a corresponding decrease in noise output.

In addition to manual control, the use of a wall-mounted thermostat is strongly recommended.  Please click on the ‘control’ tab to review the options.


EFC side mounted switch

EFC side

The EFC fan convector heater is fitted with a side mounted switch which provides on/off/high/low settings.  Typically the ‘high’ (6kW) setting would be selected initially for the fastest possible warm up.  Once an acceptable temperature has been achieved, the ‘low’ (3kW) setting can be selected reducing both running costs and noise.  

In addition to the manual control described above, thermostatic control is strongly recommended.  A pair of terminals is provided in the terminal enclosure for simple connection to a remote wall-mounted thermostat.

Here is a summary of the most common thermostat options:


Adjustable wall-mounted thermostat (commercial grade)

RST-IN Commercial Room Thermostat


Model: RST-IN

For more accurate temperature control, a wall-mounted thermostat is recommended.  RST-IN, BN Thermic’s standard, commercial grade thermostats provide accurate control and allow easy adjustment of temperature set-point. 



Tamperproof wall-mounted thermostat (commercial grade)

RST-TP Tamperproof Thermostat


Model: RST-TP

To prevent wilful or casual adjustment of temperature set point, we recommend the RST-TP tamperproof thermostat.  The set-point adjustment knob is concealed under the thermostat’s cover and optional ‘shear-off’ fixing screws are provided for complete security.


Programmable wall-mounted thermostat (commercial grade)

PROSTAT 7 Programmable Thermostat


Model: PROSTAT-7

The PROSTAT-7 is a seven day programmable thermostat which allows the heating system to be controlled to match the pattern of use.  Temporary and permanent overrides are provided.



Tamperproof wall-mounted thermostat (industrial grade)

HC-T2 Hard Case Thermostat

Hard Case

HC-D Tamperproof Tool


Model: HC-T2

BN Thermic’s famous Hard Case industrial and public area thermostats provide rugged tamperproof and vandal resistant control.  Hard Case thermostats require a special tool to gain access the temperature adjustment knob.




Tamperproof wall-mounted thermostat with set-back (industrial grade)

HC-ST2 Hard Case Thermostat with set-back

Hard Case
Thermostat with

HC-D Tamperproof Tool


Model: HC-ST2

A Hard Case thermostat is available with all the features of the standard model but with two set-points: high (comfort) and low (set-back).  Typically this device would be used to provide comfort heating when a building is occupied and frost protection at other times.  There are two means of switching between comfort and set-back.



Operation Mode One

Use the side mounted button to activate the built-in, programmable timer.  The Hard Case thermostat will then control at the ‘comfort’ set-point until the pre-programmed time period has elapsed at which point it will revert to the default ‘set-back’ temperature.


Operation Mode Two

Use a remote timer (see below) to switch between ‘comfort’ and ‘set-back’ to match the building’s pattern of use.


Remote mounted programmable timer and accessories

TIM-D1 Programmable Timer

TIM-D1 timer
with TIM-E1

Model: TIM-D1 & TIM-E1

BN Thermic TIM-D1 timer is ideal for use with Hard Case thermostats.  It will provide 24 hour/ 7 day programmable control for any number of EFC fan convector heaters.  The TIM-D1 has many features including option PIN protection, automatic summer/winter time changes and memory card programming.



TIM-B1 Boost Button

TIM-B1 Boost

Model: TIM-B1

The TIM-D1 has an integral, programmable run-down timer which can be triggered by a wall-mounted push button (TIM-B1).  This feature will provide a temporary temperature boost when the timer is programmed to be in ‘off’ or ‘set-back’ mode.


If you would like the experts at BN Thermic to select a suitable heating for your application, please click here to access our enquiry form.  Simply provide as much information as you have available and we will respond with a detailed proposal.


In simple terms the output of the installed OUH industrial fan heater or heaters must be greater than the heat losses from the building during periods of cold weather.  A small amount of heat is lost through the walls, ceilings and floors with more significant losses through windows and doors.

To estimate the heat loss from your building you may like to use our heat calculation tool


The estimated heat loss figure is the absolute minimum kW output that you should consider installing.  We would suggest adding approximately 50% to this figure to allow for an acceptable warm up time in cold conditions as well as making allowances for exceptional weather conditions and possible errors in the original data used in the estimate.

Once the target kW has been estimated it is generally as simple as selecting the minimum quantity of heater required to provide that output. 

The EFC Fan Convector heater has an output of 6kW (on ‘high’ setting).  Therefore if the estimated kW requirement was say 11kW a total of two heaters would be required.

Heat Calculator

Stage 1 of 5 » Building dimensions

This calculator is provided as a quick and easy means of estimating heat loss from a building. This is a key step in determining the kW output required from a heating system.

Width m
Length m
Height m
Building dimensions

( * ) this data is compulsory

next >>>

Stage 2 of 5 » Environmental Data

Minimum outdoor temperature
(Typically -5°c in the UK)
Required indoor temperature
(Typically 20°c in commercial buildings)
Minimum temperature in the next room
(Input temp only if there is an adjoining room)

Heat losses to an adjoining room or building are usually lower than to the outside world. To allow the calculator to take this into account we have requested the minimum expected air temperatures of an adjoining room. For a stand-along building just leave this field blank.

( * ) this data is compulsory

<<< back next >>>

Stage 3 of 5 » Construction material

U values (W/m²/°c) are a means of determining how well construction material can contain hear. For example a very well insulated wall will have a much lower U value than an un-insulated wall.

All applicable U Values must be completed (refer to guide for assistance)

Input the areas for inside walls, doors and windows if applicable otherwise leave these fields blank.

  Area (m²) U-value
Outside wall
Inside walls
Door m ²

Guide to typical U values (W/m²/°C)

External Walls
9" Sold Brick 2.2
11" Brick-block cavity (no insulation) 1.0
11" Brick-block cavity (insulated)) 0.6
Internal Walls
4.5" Brick/plaster 2.2
Plasterboard/ 4" studding/plasterboard 1.8
Solid concrete 0.8
Suspended timber 0.7
Corrugated asbestos 5.7
4" solid concrete 4.0
Flat roof 25mm insulation 0.9
Flat roof 50mm insulation 0.6
Single glazing 5.6
Double glazing (air cavity) 2.8
Double glazing (argon gas cavity) 2.6
Double glazing low E glass (air cavity) 1.8
Double glazing low E glass (argon gas cavity) 1.5
Timber 2.4
Insulated Roller Shutter 1.4
Un-insulated Roller Shutter 4.0

Stage 4 of 5 » Ventilation

Air changes per hour
(refer to guide for assistance)

The following figures apply to naturally ventilated buildings only. If a building has fan forced ventilation then the number of air changes per hour will be much higher.

Building Typical Air Changes per Hour
Shop 1
Office 0.9
School 0.7
Warehouse 0.5
Hall 0.8

Stage 5 of 5 » Total Heat Loss Calculation

Heat calculation based on the information you've given:




Instructions and specification sheets are available for BN Thermic’s entire range of products, including EFC Fan Convector Heater.


Product Images

EFC Fan Convector Heater

EFC Fan Convector Heater

EFC Fan Convector Heater with plinth

EFC Fan Convector Heater with plinth

EFC Fan Convector Heater - Front view with plinth

EFC Fan Convector Heater - Front view with plinth

EFC Fan Convector Heater - Access Key

EFC Fan Convector Heater - Access Key

EFC Fan Convector Heater - Front panel opened

EFC Fan Convector Heater - Front panel opened

Optional plinth for additional height on an EFC unit

Optional plinth for additional height on an EFC unit

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