Air Source Heat Pump

Blueginger1984

Hi,
I wondered if anyone has experience of how much a air source heat pump system cost to run? We live in a 3 bed end terrace which has storage heaters. We are currently paying about £150.00 per month to run these on a eco 7 meter, so it’s costing us a fortune! The housing association have told us they are upgrading the heating system to air source heat pump system which they say is cheaper to run than storage heaters.

Has anyone changed from storage heaters to ASHP system? How do you find them in terms of running costs? Any advice would be appreciated.

matelodave

I've got an ASHP id I find iy pretty economical to run - our total leccy bill for heating lighting cooking etc etc is around £75 month for a 140sq.m 3 bed detached bungalow out in the Cambridgesbhire fens. We are at home all days as well.

So theorectiaccly if you are having a completely new bespoke system installed you should be able to get decent economy from one.

Those who seem to have problems are those who have one stuck onto the end of an existing heating system and try to run it like a conventional boiler. They usually end up with insufficient heat and very high running costs.

ASHP dont really lend themselves to on/off high temperature operation because the hotter you run them the less efficiemt they are. So ideally they should have oversized radiators and be run with low flow temperatures . This means that they take longer to heat the place, so they need to run longer as the radiators dont get red hot like they do with a conventional boiler.

Our system doesn't turn off, the thermostat turns it down by three degrees overnight and up again in the mornings so the house doesn't really get cold.

Try to understand how it works and learn how to use it effectively and I'm sure that a properly designed system will be fine.

JC_Derby

How much was your system and what is your expected payback time?

matelodave

send me a PM with your e-mail address and I can give you a writeup about my system including costs

Blueginger1984

Hi JC-Derby, we have'nt had it fitted yet, the housing association are fitting it for us.