On 09/09/2019 19:26, Dave Plowman (News) wrote:
In article ,
David wrote:
It would be a very odd house where solar gain happens that quickly.

Modern, perhaps?

Large area of bifolds and 3 roof lights, all South facing, does trap a
lot of heat very quickly on a sunny day.

Quicker than a thermostat can shut the heating down?

No-one is saying that the CH won't switch off, only that it is a choice
between heating the house for a few hours or putting up with the cold
until solar gain warms it up a few hours later anyway.

SteveW