Probably a question for a plumber

[az city]

Those air source heat pumps, run off Electricity?

They do. It was pretty inexpensive over Christmas - around GBP 6-7 a day and I had it at 74-75F. Getting used to how to use it effectively is a bit of a bugger though.

[ZZ Jack]

They do. It was pretty inexpensive over Christmas - around GBP 6-7 a day and I had it at 74-75F. Getting used to how to use it effectively is a bit of a bugger though.

I have a couple of Air Source Heat Pumps which are fairly inexpensive to run, and still work when the outside temp is -4C 25 F. About £800 for the pair for a DIY fit. They have a COP of about 2.4 when the temp drops below 0 C, so 1 Kw in gives 2.4 Kw of heating.

[az city]

I have a couple of Air Source Heat Pumps which are fairly inexpensive to run, and still work when the outside temp is -4C 25 F. About £800 for the pair for a DIY fit. They have a COP of about 2.4 when the temp drops below 0 C, so 1 Kw in gives 2.4 Kw of heating.

Yeah I have been surprised at how cheap they are to run. Getting used to planning when you want to draw the energy has been anpther thing. It took me two weeks at Christmas to get the system set up. It also took the house a long time to get warm initially and running the heat pump continually seemed scary at first.

[ZZ Jack]

Yeah I have been surprised at how cheap they are to run. Getting used to planning when you want to draw the energy has been anpther thing. It took me two weeks at Christmas to get the system set up. It also took the house a long time to get warm initially and running the heat pump continually seemed scary at first.

I'm surprised it gets that cold in Phoenix. But then, I've only been there in the summer, when the heat pumps work the other way round.