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.