Germany’s Fraunhofer Institute for Solar Energy and a group of heat pump manufacturers have started a project to replace gas and oil in multi-family homes with propane heat pumps. This type of heat pump will include low-charge propane (R290) as the refrigerant.

In fact, propane has become a recognised refrigerant for the heat pump industry and is widely used in outdoors heat pumps.

Specifically, the project´s consortium will develop heat pumps for single-floor heating systems, indoor central heating systems, and high-performance outdoor heating pumps.

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