Derek G. wrote:
On Mon, 30 May 2011 10:20:59 +0100, The Natural Philosopher
wrote:


Cue resident loony extolliing their praises.
Hot air systems are very very good at getting a space up to temperature
quickly with very few hot spots.


We had a Johnson & Starley gas system. It did indeed heat the room air
very quickly. Unfortunately all the furnishings and fittings etc
stayed cold to the touch for just as long a time as a wet CH system.

They also are compact.

Absolutely untrue of the "Electricaire" systems.

Their efficiency and cost depends on how they are driven.

The joints in the ductwork in our system were sealed with ("Waddya
Know!) duct tape which dried out, went crispy and dropped off, leading
to loss of hot air.

It also blew dust about the house and the main circulating fan was
unbalanced, hence noisy, from day one.

Derek G

well don't blame a class of heating for one badly implemented system


I was merely trying to make the pit that there is nothing wrong with hot
air blowers per se. Its how they are installed and what they run off,
that makes for a good or bad system.

I've got blown convectors plumbed into the hot water circuit. Neat and
compact, just a bit noisy.