I saw this picture on the web..
And, instantly saw a problem. When the ACs are running (in cool mode),
one until is
driving hot air into the unit next door!
These units should have been arranged so the exhaust air didn't go into the adjacent unit..
The installers didn't read the manual...
Then, the little LED above my head blinked on..
What if the owner of a Sanyo mini-split were pump 48 degree water
out of a well and pipe that water into a large water-to-air heat
exchanger coil, that was sitting directly in front of the Sanyo air-input??
In the summer time, pre-cooling the air going into the AC is going to help..
In the winter time when it's 20 degrees, pre-warming the air to 48 F
should help too..
What do you think?? Could gizmo like this pre-heater/pre-cooler cut power usage by 10% ??
Cheers,
Rich