Out of interest what are your heating and water temperatures on your combo? I flirted with changing to an “air-source- heat-pump and one of the recommendations are to have your heating temp below 50*C so I’ve went with 46*C for heating and hot water and, till now, it seems to be working fine. We still have winter to deal with so that temp will probably increase.
The only person who got all his work done by Friday was Robinson Crusoe.
Anything i post over three lines long please assume it is an article lol.