Understanding heat pumps!

[zapaman (Dom McCann)]

Very relevant in this thread as well.

Independent heat pump design advice

We had our ASHP installed on 8th-9th April this year. So far we are getting an average COP of 3.25 overall; the combined value for space heating (effectively nothing since mid-late May), hot water and the standby consumption. Breaking this down we are getting a COP of 3.68 during space heating and a COP of 2.0 during the hot water cycle. Standby consumption is ~9W (really very low and probably lower than the elec our old boiler was probably consuming) which so far has represented 6% of the ele…