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Participating countries

Austria, Canada, France, Germany, Japan, the Netherlands, Norway, Sweden,USA

Economical Heating and Cooling Systems for Low Energy Houses

This Annex investigated different configurations of integrated multifunctional heat pump systems for space heating, DHW production, space cooling, ventilation and de-/humidification of the ventilation air for the application in low and ultra-low energy houses.


The objective was to evaluate, assess and enhance integrated heat pumps systems for low energy houses with regard to overall energy use and costs under the boundary conditions of thermal comfort.