"Dave Plowman (News)" wrote:
If you have a well insulated house in the UK, just how often would you
need air-con?

The problem is heat sources inside the house. If it's 25-30C outside and
someone's had a shower, you're roasting a joint in the oven, and the kids
are using their 600W gaming PCs, that's heat input and nowhere for it to go.

Plus solar gain (windows etc) can be a problem, even if you're well
insulated.

Theo