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Friday, 2017-08-18
Ventilation heat recovery
Air handling unit

- 84% Effective heat recovery
Counterflow heat exchanger with high efficiency
- Low noise level
Surrounding sound below 39dBA (at 150m3/h, 145Pa)
- Low energy DC fans
Extremely low power consumption
- Automatic by-pass
By-passes the heat recovery to cool in summer
- 900 Watts after heater
Ensures that the supply air temperature falls no lower than the set temperature
- Filter bags easily replaced
Slot-in type for easy access
- Designed and manufactured in Sweden
Solid galvanized steel casing insulated with rockwool
(free shipping)
installed from
The classic REC Temovex 250S-EC is the quietest unit on the market of this capacity. Looks like a refrigerator, intended to be placed on the floor in utility rooms, boiler rooms, auxiliary kitchens, hallways, etc. The unit consists of two efficient EC fans, easily accessible filters, heater (900W electrical as standard, hot water battery is optional) and automatic bypass. Extremely large aluminium counterflow heat exchanger allows 84% of the heat energy from the extract air to be recovered and used to heat the fresh incoming air. By using a counter-flow heat ex-changer there is no air leakage between extract air and fresh air. Bag-filters easily cleaned or replaced. Designed and manufactured in Sweden Galvanized steel inside and out with Rockwool insulation in between, The 250S-EC is the same unit as the 400S-EC, but with smaller capacity fans.
Product Description
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Installation cost example:
100m2 bungalow with vents in 3 bedrooms, living room, utility, bathroom and kitchen.
  REC RT 250S-EC-RS ventilation unit (including shipping to site) 2600€
  + Projecting and supply of installation kit (steel ducting, tapes, bends, saddles, reducers, hose clips, etc) 800€
  + Cost to install duct and fittings 750€
  + Cost to connect up and commission 200€
  Extra charge for every hole that needs to be drilled through concrete joisting (if any) - 50€  
  Total cost 4350€
All Prices excluding VAT (23%) - prices for Galway Region - work carried out by Scandinavian Homes Ltd appointed installer -
additional travel costs may apply for other regions please enquire if your house does not fit in this table
How a ventilation and heat recovery system works


The principle for a ventilation-heat recovery system with supply and extract air is simple. Harmful contaminants and moisture held in the interior air is removed via the extraction vents in the “dirty rooms”; kitchen, bath, toilets and utility rooms. Before leaving the house, the old air gives off its heat to the fresh incoming air in the heat-exchange unit.

With a balanced mechanical system, you control the amount of ventilation in the house. Not too much on windy and cold days and enough on humid and mild days. At the same time the incoming air is filtered from dust and pollen. The system allows you to determine where you want the fresh air to be introduced, in what quantities and at what temperature. The fresh new air is normally supplied through a vent in the ceiling in the “clean rooms” such as bedrooms and living rooms.

A whole house ventilation system helps to provide consistent temperatures though-out the house or apartment. The house or apartment must be reasonably well insulated and draft-proofed for the system to work to its highest potential. The used air, which has now released most of its energy content, is fed out through the exhaust duct (brown duct). This happens most commonly though either a louvered grille or combi-box on an external wall, or through a roof hood.

Ventilation units make your home into a thermos! You retain the heat in the building without the need for unnecessary new thermal energy. As a result your heating system will have a much easier job to do. The kitchen extraction fan is usually kept separate to avoid contamination of the ducts and of the main unit.

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