VUT 300, 400, 600 WH EC Series - The units are equipped with high efficient Air handling units with water heating coils which run off the flow or return of your wet heating system (air source & ground source heat pump). VUT units are equipped with the high efficient heat exchangers reaching up to 95%. VUT WH EC models are fitted with the counter flow heat exchangers made of polystyrene. The unit is equipped with the drain pan at the bottom of the heat exchanger for condensate drainage. EC-motors reduce energy consumption by 1.5-3 times and ensure high efficiency and low noise level at the same time. These models are compatible with Ø 125, 160 and 200 mm round ducts.