On 5/7/2018 1:23 PM, Jimmy Wilkinson Knife wrote:
On Mon, 07 May 2018 21:13:18 +0100, wrote:

On Mon, 07 May 2018 19:59:34 +0100, "Jimmy Wilkinson Knife"
wrote:

On Mon, 07 May 2018 19:07:11 +0100, wrote:

On Mon, 07 May 2018 18:28:24 +0100, "Jimmy Wilkinson Knife"
wrote:

On Mon, 07 May 2018 17:34:32 +0100, rbowman
wrote:

On 05/07/2018 07:44 AM, Jimmy Wilkinson Knife wrote:
It wouldn't matter to me which was more efficient. A swamp
cooler is a
pretend AC unit. It evaporates water, therefore humidifying the
room.
Also a real AC unit can run in reverse and serve as a heat pump
for winter.

In places where a swamp cooler works, a little more humidity isn't
a bad
thing.

Why does anyone want humidity? If it's hot, humid air makes it
feel hotter, as your sweat can't evaporate so easily. In cold
weather, the damp cools you down more. So it's never wanted.

You really should get out of Scotland sometimes. There are plenty of
places where the humidity is very low. The house being too dry is a
problem.

Why? What's so bad about dry air?

People run humidifiers in the winter. The other thing you
miss is if it gets much below zero C, your heat pump stops working.
There just is not enough available heat to do you any good and the
outside coils ice up.

Funny how a domestic freezer can easily make it down to -20C on the
cold side.

And the inside (cold) coils also ice up and quit working.


Even at 5-7 C they are not very efficient. That
is why they usually have toaster wire strips in them.
When you want to heat something up, it is hard to beat burning gas if
you have it. Gas is really cheap here.

Here too, but a heat pump sounds simpler.

What is simpler than a burner a metal can and a fan?

All the radiators/pumps/valves/pipes to distribute the heat.