3. It’s getting rid of moisture and ‘nasties’ in the air
50% of the heat recovery systems job is to extract air.
This is air that you want removed as it is filled with moisture, airborne particles such as dust, pollen and other pollutants such as Volatile Organic Compounds (from cleaning products, man-made furnishings).
Air is extracted via air valves in the ceiling in the ‘wet rooms’ – kitchens, bathrooms, wc’s. You can’t see what’s floating in your air, but there can be as many as 900 pollutants at one time in your indoor air!