30 August 2018
Heat pumps are more attractive than (many) conventional heating methods, mainly due to their efficiency. This article describes the impact of heat pumps on the energy chain – not just in residential homes, but also on
infrastructure and emissions. Hybrid heat pumps offer advantages in the sense that the carrier can be varied
depending on specific circumstances, thereby further improving efficiency and reducing emissions with only limited impact on energy infrastructure costs. This can be achieved by the following means. Switching to gas where heat pump efficiency is poor reduces energy bills and also reduces electric peak load (reducing electricity infrastructure costs). Also, at times when electricity emission factors are poor, a switch can be made to gas as energy carrier. Switching to electricity during periods of abundant availability of clean electricity also reduces emissions. Switching to gas at very low outside temperatures avoids installing low-temperature radiators in existing homes, thereby reducing COSTs.