Bernd 07/22/2022 (Fri) 10:08:41 No.48354 del
>>48353
>Now I can casually use 5 liters of free hot water on many days during the summer.

As far as I know, it would work even in winter in sunny day.

Best way to use solar energy is additional heating, with combination of classic electric/gas boiler. It may require relatively large pipe system though.