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BLS - 110V convector heater
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BLS 110V Low Level Convector Heater

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BLS - 110V convector heater

BLS - 110V convector heater

BLS 110V Low Level Convector Heater

  • A simple convector for use where only 110V supply is available
  • Tough steel construction mean the BLS is well suited to site huts and other industrial applications
  • Economy is ensured by an adjustable built-in thermostat
Rear view of 110v convector heater showing mounting holes

Rear view of 110v convector heater showing mounting holes


There is only one heater in the BLS range

Model KW Width Depth Height
BLS-110-1000T 1.0  1206 62 148



Technical Specification

Model:   BLS-110-1000T
Output:   1kW
Supply:  110V 1ph
Colour:   Almond
Finish:   Epoxy polyester powder coating

1mm steel connection box

0.8mm steel body

1mm steel front panel

Rounded upper corners

Linear high-limit temperature device with automatic reset

Electrical Connection: Terminal enclosure located on right hand side with easy access cable clamp through case and optional cable entry knockout on end panel
Heating Element:

Stainless steel tubular heating element with aluminium fins

Element mounted on nylon bushings eliminating expansion noises

Installation:  Wall-mounted using two rows of mounting holes 25mm apart
Control:   Built-in mechanical thermostat with heater front temperature set-point adjustment knob
Dimensions: 1206mm (L) x 148mm (H) x 62mm (D)
Weight:  6kg
Guarantee:   1 year

Features & Benefits

Feature Benefit

110V supply

Suitable for site huts and similar applications

Central baffle

Promotes convection currents thus ensuring rapid warm up

Built-in adjustable thermostat

Ensures economy and keeps external wiring to a minimum

Low profile design

Allows maximum use of wall space

Robust steel construction

Suitable for a rugged industrial environment

Metal sheathed finned heating element

Exceptional element life when compared with open coil elements

Automatically resetting over-temperature protection device covering the entire length of the heating element

The heater will automatically be switched off should the flow of air become obstructed at any point along its length

Centrally positioned longitudinal baffle Encourages convection currents for vastly improved heat transfer.


How it Works

BLS 110V low level convector heaters are wall mounted at skirting level.  Fixing is through the pre-punch holes in the heaters steel case.

The BLS is a space heater designed to raise the air temperature within a confined area.

Once energised the metal sheathed heating elements will quickly reach their optimum temperature causing warm air to rise from the aperture above the central baffle plate.  At the same time cooler air will be pulled into the heater through the aperture below the central baffle plate completing the convection cycle and ensuring a quick warm up.


Temperature control is by means of a built-in thermostat with a front mounted knob for temperature set-point adjustment.


Automatically resetting over-temperature protection device is fitted which covers the entire length of the heating element.  This device will switch off the heater should the air way become obstructed.


The BLS 110V convector heater is fitted with a built-in thermostat.  Temperature set-point adjustment is by means of a front mounted knob.

No additional temperature control is required.


The BLS 110V low level convector heater is specifically designed for a 110V 1ph supply.  Please check that this supply is available before selecting this model.

If you would like the experts at BN Thermic to select suitable heating for your application, please click below 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 BLS 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, select the minimum quantity of heater required to provide that output. 

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

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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

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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 BLS 110V Low Level Convector Heater.


Product Images

BLS - 110V convector heater

BLS - 110V convector heater

Rear view of 110v convector heater showing mounting holes

Rear view of 110v convector heater showing mounting holes


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