I have a two-story house that is currently being blasted by the heat dome in the NE. What I have been doing the past few days is switching the fan on my thermostat from AUTO to ON in the evening so the upstairs won't be so hot then turning it back to AUTO before I go to bed. I only have one thermostat downstairs so it is always cooler downstairs. The attic fan that blows out the gable vent is running almost constantly.
I have already blocked all the return vents downstairs and closed all of the downstairs registers and it has dramatically improved the temp upstairs but it still needs work. I would like to avoid redoing the ductwork and making the 2nd floor a separate zone.
I was hoping I could find a thermostat that would kick on the fan say
20 minutes out of every hour regardless of the call for the compressor.Any ideas?