Changing to an Air Source Heat Pump

zerograft · Post by **zerograft** » Wed Jul 08, 2020 9:11 am

I'm going to go ahead with installation of an ASHP to replace my current setup of ancient storage heaters. I'm currently on a Total Heating Total Control (i.e. same as Economy 7) arrangement, whereby there are two supplies to the property (one the off-peak supply to the heating, the other the standard supply - there's a meter for each).

Can someone please explain the implications of this installation on the supply and meters?

Will I continue needing two supplies (one for the new system, the other for the standard electricity supply?) Or will it all go through one meter? I assume the installer will explain and carry out all the associated work, but I'd like to understand it in advance. It'll also be good to be fully equipped with knowledge when I contact my supplier to explain what's happening and change tariff accordingly (or ditch them for someone else!)

Thanks

Rorschach · Post by **Rorschach** » Wed Jul 08, 2020 10:48 am

Your ASHP will run on your standard tariff, you don't want to be running it overnight only.

Someone-Else · Post by **Someone-Else** » Wed Jul 08, 2020 10:49 am

You only have one supply to the house not two.
What happens is at a predetermined time (Some meters can have the time changed remotely) the 2nd meter switches on and powers (in your case) the storage heaters, and like wise at a predetermined time the 2nd meter switches off.

You can only connect your ASHP to one supply. You should ask the installer for precise information.