Diagram of an air-to-water heat pump with 2 storage tanks

Okay, I would understand hot water.

Oh yes, I thought that was clear because I had just written about the hot water tank right before. The value is from early August to early May, so for just over 210 days. The two of us hardly need any hot water, despite occasionally showering for longer and sometimes taking a bath. If you have a rain shower and bathe every two days, it probably looks different, but neither applies to us.