|Image from Accuweather|
I pulled a panel off the furnace which is down in the basement and am running in fan mode.
This morning the basement was a 66 degrees and the upstairs at 73.
The upstairs temperature is now at 75 degrees while it is 91 degrees outside.
Nightly lows are predicted to be in the lower 60s so we will open windows and ventilate with a fan to chill the walls. The "cross over" when the outside temps are lower than the inside temps will be about 10 PM.
Seasonable temperatures are expected to return on Thursday. Until then it will be good swimming weather.
If I get ambitious tomorrow I will check out the air conditioner unit.