Thermolier Unit Heater

From: £550.00

Thermolier LPHW Unit Heaters and Thermolier Steam Fan Heaters are fan driven hot air heating system products which utilise heat exchange technology to keep cost at bay. Units are available in horizontal and downflow (vertical) models for use with steam or hot water.  Front louvers and careful situation of the units gives exceptionally fast warm up and practical heat control in large spaces. Requiring little or no maintenance, this system is tough and efficient.


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In designing Industrial Heat Exchangers capable of operating at high extremes of temperature and in harsh environments particular attention has been paid to the areas most likely to fail through leakage. This is typically the point of joining the tubes to the header, particularly in the case of copper tube to header joints.

Commercial Industrial Heat has supplied heaters to oil platforms in the Baring Sea where they provide plant room frost protection in conditions reaching -30°c. We have also used this technique in heat exchangers at Sizewell B, Sellafield and other nuclear sites as well shipping over 5,000 Thermolier units since the technique was developed.


  • Robust Design and Construction
  • Ideal for Harsh Environments
  • Mechanical Bonding
  • Five Different Physical to Suit any Location
  • High Performance Parameters
  • Simplistic Range Offering

N.B. The products offered online are based on horizontal output and 3 phase supply.  If you require a variation on any aspect of Thermolier, please get in touch with a member of our sales team who will be happy to help to ensure your requirements are fully met. The Tapered Ferrule Method is deployed by Turnbull & Scott for pressure jointing of copper pipes to steel headers in Industrial Heat Exchangers.


ModelRPMMounting Height Vertical (mm)Mounting Height Horizontal (mm)Aperture size (WxH) (mm x mm)Depth (mm)Coverage (mm)Volume (m3/s)Velocity (m/s)Weight (kg)Trade Price


Thermolier Technical Data


Ensure no equipment is installed in a position that will obstruct the airflow from the unit. Even small bore pipe will cause turbulence in the air leaving the Unit and will prevent the unit delivering its full output into the occupied zone. The air intake should also be unobstructed.

Hangers must be fixed to both the unit the wall, truss or column. Ensure the hangers will allow the unit to move when the pipework expands.

The fanguard should be undamaged and securely fixed in the correct position.

Where the unit is fitted into ductwork a fan guard is not required. Check that the ductwork has provision for access to the motor and heater battery for annual  inspection and maintenance. A short length of soft, i.e. canvas ducting should be fitted between the unit and ductwork to stop any vibration being transmitted into the ductwork.

It is recommended that the louvres are set as follows: Horizontal Units; louvres parallel, angled slightly downwards. Downflow units; when mounted at the upper recommended height each set of louvres should be parallel and angled slightly outwards. When mounted at the lower mounting height, the outer louvres should be angled outwards and the inner louvres vertical. This gives the maximum spread for the Downflow Unit. It also applies when used as a door heater.