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PassivHaus Trust UK has produced this great video showing Gresfords Architects‘ The Old Water Tower.

The Old Water Tower is a passive house home delivering great indoor climate for its residents – the house is very airtight, with a Mechanical Ventilation Heat Recovery system (MVHR) securing good ventilation without a big heat loss.

The Idealcombi Futura+i windows on the north side are small to reduce heat loss, while windows and Futura+ sliding doors on the south side are big – allowing solar heat gain. When the temperature of the house reaches 21°C the external blinds deploy automatically to avoid over heating.