ECRC Capenhurst co-operated with two firms of builders to design, build and sell four low energy houses. The houses were insulated to a high standard and fitted with mechanical ventilation. The average annual space heating energy consumption of the four houses was some 6,000 kWh, 95% of which was provided at low tariff rate by storage heaters. The whole house average temperature over the heating season ranged from 17.6 to 20.3 degrees C for the four houses.
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