"HvacTech2" wrote
Hi cowboy, hope you are having a nice day

On 28-Jun-05 At About 09:08:29, cowboy wrote to All
Subject: ductless split A/C system

c From: "cowboy"

c the outside unit must be outside to work correctly, but a roof is OK

c also, it needs to be out of direct sunlight if possible, you will
c save a lot of money if it is in shade, so

I don't know where you get your info but shade doesn't matter.
-= HvacTech2 =-


actually shade matters a lot in your utility bill, that is why I said it
would cost less.

I will explain the physics of it:

how hard the compressor has to work is proportional to the head pressure it
is up against, and a shaded condenser is cooler, and therefore has a lower
head pressure at the same ambient temperature, not to mention that the final
temperature out the ducts will also be lower, which will allow the unit to
stay off for a longer period of time, even further saving money.

so the long and short of it is, a unit will work just fine in full sun, but
it will work a lot cheaper in shade

in wintertime, a heat pump would work a little better in sun than in shade,
but not nearly enough to offset the summer saving, not even close.


cheers!

cowboy
hvac engineer & tech