Architeco have completed the design and PHPP calculations for the fit out of a disused boiler house to provide a one bedroom Passive House.
The design is predicted to have a heating load of just 10W/m2 annually – the equivalent of burning 16 candles to heat the whole house. This was tricky to achieve as the existing building is single storey and L-shaped, increasing the surface area available for heat loss, and located in Orkney, with negligible levels of solar gain in winter.