Air source heat pump (ASHP) retrofit, running costs and experience of buying and installation?

Hi @Stevea 

Having been awakened from my slumber by @Blastoise186 I can confirm that I am indeed happy to talk with you about this! :)

I’m not sure if you’ve already been through the various threads on the forum such as 

If you click on the heat pump tag of your post it should find some others.

For disclosure, I got my heat pump through the OVO Zero Carbon Heating Trial.

The price of the system was just under £15,000 which included supply and installation of a High Temperature Air Source Heat Pump, control unit, new water cylinder and 3 upsized radiators. My property is a 4-5 bed 1950’s detached bungalow with loft conversion. Good roof insulation but poor wall and window insulation.

Installation took around 4 days of which we were without heating / hot water for around 1 day. All went smoothly and couldn’t fault the installer, though some installers are better than others, so go with ones with a good reputation. www.heatgeak.com is a good place to start for advice.

I’ve had the system since Summer 2021. Energy costs over last winter were slightly cheaper than the previous winter when I had gas. Obviously there would have been price changes and differences in seasonal temperatures to take account of to be able to give an accurate price comparison. But generally, if you can achieve an efficiency of greater than around 320% an ASHP should work out cheaper to run than a gas system. Plus you can get rid of gas standing charges if you get rid of your gas supply completely.

Feel free to ask any specific or general questions. I’m sure the members here will be able to help.