I wanted to get solar PV on the roofs years ago.
But didn't want to fight with my wife about it.
The whirlwind idea won't fly. When it's cold outdoors, the air blowing out of the unit is super cold!
That's cold air that I want to get rid of real fast!
One of my ideas was to pull attic air down to the air intake.
That way, I could get solar heated air during the day, and re-cycle
slightly warm attic air.. (It's a little warmer than outdoors,
because of leaks in the ceiling insulation).
What I've learned during the last few Global Warming winters, is blowing
snow can shut down the heat, by causing defrost cycles repeatedly.
I'm now wondering how I can get snow-free air into the intakes.
Thinking of baffle walls, or large ducts to bring clean air from under the deck area.
Or, just build a much larger snow roof. So that snow will have to blow
in about 6 feet before getting to the intake. Give it time to settle to the ground.