On 21/02/2019 16:48, RJH wrote:
On 21/02/2019 15:51, Andy Bennet wrote:
On 21/02/2019 14:11, Andy Burns wrote:

Harry Bloomfield wrote:

Brian Gaff wrote:

There has been no real development of electrical heating* since the
very early days of electricity.
Nor can there be, they are already 100% efficient - 1Kw in = 1Kw of
heat out, ignoring transmission losses.

Heat pumps can give up to 4kW of heat out for 1kW of electricity in.


But cost in excess of £10k to install ...

We looked at installing an air source heatpump, would have cost £13k
to upgrade our existing wet system.

Is that 13k the DIY cost?



No, "professional" installers.