[6] A second heat-pump for sanitary water

[6] A second heat-pump for sanitary water

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In the beginning, Kurt was still providing the hot-water supply for the kitchen and the bathroom by two stand-alone electrical boilers. In the meantime he has exchanged the boiler in the bathroom for a second heat pump. ‘It is a small air-to-air heat pump that I installed in the attic,’ explains Kurt. An air-to-air heat pump is basically a reversible air-conditioning unit that cools the surrounding air to heat water. ‘I used the vessel of the old electrical boiler and connected it to the heat pump. In this way I created a buffer stock of 200 liters of hot water at 55°C. I am presently investigating whether I can also use this air-to-air heat pump to pre-heat the water for the electrical water boiler in the kitchen and for the dishwasher. It should be possible.’