Originally Posted by
mackers
I personally think GSHP is a waste of time, no offence shings. They rely heavily on unsustainable fuel to power them and are relatively expensive. I think buildings should reduce the amount of heating needed by super insulation and make the most of passive means of heating. Just my tuppance worth.

Ahh the great un washed lol no offence taken.
You're incorrect though in your opinion.
They do use electricty to power them correct, however the whole point is that for the electricty they use to power them they provide 2-3 times the amount of heat.
IE it would take 2-3 times the electricity to produce the same amount of heat.
Dont forget you can produce electricity from PV Cells and Wind Turbines.
If they dont work like that then they're not suitable for the application, it comes down to the design of the building and the method of heat extraction as to how well they work
They are expensive to buy and install I agree, at the moment, when fitting them retrospecticly however my point on potential future fuel costs increasing is how they become economically viable.
Where they really win is on new builds where planning would otherwise be prevented due to the sustainable requirements of government.
At this point they suddenly become viable - 10-20k installed which means you can build vs you cant.
ARGHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH