16 February 2022

Final Report – Part 2 Annex 32: Economical heating and cooling systems for low energy houses


System solutions
Multifunctional heat pump systems for the application in low energy houses

The report gives an overview of marketable heat pump system solutions applied in low energy
houses in the participating countries of IEA HPP Annex 32. In low energy houses, loads
change significantly, in particular the space heating needs are notably reduced, and the
share of DHW increases. Moreover, mechanical ventilation may be required to guarantee
the necessary air exchange due to the air-tight building construction, and in recent years
market development show an increasing integration of a comfort cooling option in the system
layouts.