My basement has been staying right at 50F, thanks to all the oil we've been burning.
I've been outside during a snow storm and watched one of my units pulling in the snow. I could see it slowly build up.
I do have a pretty good roof over one unit, but the other only has a very small make-shift rain roof.
http://i46.photobucket.com/albums/f1...CL/Sanyo-1.jpg
It's just to keep water from dripping down from the side of the house and running
down in front of the HX coil.
http://i46.photobucket.com/albums/f1...0slot/R072.jpg
The temperature has started to drop, by midnight the forecast shows us in the low single digits.
I'll be shutting down the Sanyos at around 8F, which might be pretty quick.
I don't like leaving them on during very low temps, after they start using 2Kw.
Better to shut them off, and get the same heat from 2kW in space heaters.
When I see a forecast with less than 10F for early in the morning,
I can set my Sanyos to turn off, 1/2 hour after the oil burner comes on.
The oil burner timer was installed before we started using the A7 for hotwater.
I've done one timer setup run, and it worked like a charm.