Last week we had our attic and basement re-insulated. Above, you can see our 34-year old insulation. Below are the new R-30 rated piles.
After the insulation crew left, I turned off the air conditioner for five hours in order to operate the airless paint sprayer.
During that time, the temperature in the house only increased by ONE degree! This improvement will evidently pay for itself in less than 18 months.