We have recently installed a whole house fan in our NJ home. We have central air as well, but the second floor of the house stays pretty hot and uncomfortable after using the AC all day. We're wondering what's the best strategy to have the second floor cool down to a point where it is comfortable to sleep at night (Maybe 76 degrees or so). Please keep in mind that the assumption is that the central air was on all day, and downstairs is comfortable (73-75) and upstairs is uncomfortable (83 or hight). Attic temp is 115 or higher.
Here are some ideas we're trying to entertain:
- Early evening, open up the windows on the second floor, run the whole house fan while central air is on. After an hour or so, close the windows, and let the ac do the rest.
- Early evening, open up a few windows next to the thermostat downstairs, run the fan while ac is on. Cool air would go to the second floor and into the attic. Warm air would replace the cool air next to the thermostat and force it to keep the AC on which would then cool the upstairs and keep the downstairs not too cold but comfortable.
- Any other ideas would be apreciated.