I have a house that gets quite hot in areas and quite cold in others. I've put together a spreadsheet below to see if something like this is possible. Ideally a call to the fan to turn on and open and close the selected vents would help balance out these rooms (taking cold air from lower liv and guest br and circulating with Office. Is there any option like this available? Currently the fan only turns on if there is a call to heat or AC. I believe this would be very beneficial to efficiency as well as cost savings.
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