An efficient, cost-effective heat exchanger which recovers up to 80% of the heat contained in stale exhaust air by passing it over (but not mixing with) fresh air from outside. The fresh air passes though tubes sealed inside the heat exchanger which are surrounded by warm air from the house.
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• Additional HEATING by including radiator element which can be supplied with hot water by ground source heat pump, LPG or biomass
• RECIRCULATION, allowing the warm air in the house to be passed back over the radiator and mixed with fresh incoming air.
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