paulfoel wrote:
Obviously, they're not going to complete with your proper AC unit but
are they any good at all?

B+Q are doing one for =A340 where you stick ice and water in it.

Any better than a plain old fan ?


They do work, yes, I've used them. But no, they dont compare with ac at
all.

They work primarily by evaporating water. This has a cooling efffect of
4C or so on the air. You need a litle ventilation, not much, so as RH
rises the higher RH air is lost to the outside allowing more
evaporation, which keeps cooling things down.

Expect maybe 3-4C of gain. Nothing huge, but yes on a hot day it makes
all the difference.


However, if youve not spent anything yet, Thing 1 to get would be a
ceiling fan. Less money, more effect. The evaporative cooler would be
one of several secondayry choices.

Dont put ice in it, as making ice releases more heat into the house
than melting it removes.

BTW these evap units will give you no joy on wet damp days, but those
are not normally the hottest ones, so its not a biggie.


NT