Thanks a lot, Bill. That's a question that I can ask the would-be supplier of
said heat pump. It would indeed be pointless to be using more energy just for
the sake of new, supposedly low carbon, technology.
But the temperatures don't get very low here in Cambridgeshire, so perhaps it
would be OK. On the other hand, this is an old house (1750s) and has only
single thickness wall and limited scope for insulation.
Chris
On 28 Nov 2012, at 18:06, "Bill Pearce" <billcpearce@xxxxxxx> wrote:
> I am living with one now. I think you will see significantly higher bills
> with a heat pump, unless it is the ground source variety. Those are able to
> overcome the problems of the air source in extreme cold conditions. With air
> temps of under about 32 degrees F, the unit switches to a backup heater as
> there's no more heat in the air, and the backup is usually a resistance
> heater, and your electric meter will fling the little disc into orbit.
> Sometimes an old gas or oil forced air furnace can be adapted to use as a
> backup.
>
> If you live where there are not huge temperature swings, like where I live,
> it would be good, but again ground source would be better.
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