On 26/10/2020 10:51, Vir Campestris wrote:
It used to be we had open fires. But then hot water radiators came in -
much cleaner, and easier to manage.

Nowadays we seem to be moving towards underfloor heating - where
effectively the entire floor is a radiator. Efficient, but slow to respond.

But there was a time when hot air systems were popular, and I think
still are in the USA.

Does anyone know why they went out of fashion? It can't just be because
they made a great place for spiders to hide!

Very difficult to retro-fit, so only really used in new builds. With
those, if you are going to go to all the trouble of fitting the ducting,
air conditioning makes more sense. It is much more energy efficient and
can cool in the summer as well as heat in the winter.


--
Colin Bignell