I was really nervous about our gas bill. The period for the last bill (early/mid-December to early/mid January) was cold. We had a lot of days where it didn’t get above 20 and the nighttime temperatures were in single digits. The furnace clicked on and off at a pretty rapid rate.
Still, I was hopeful that the bill wouldn’t be too high because, prior to the heating season, I discovered and repaired a leak around the fan in our master bedroom that had been whisking air into the attic at what had to be a pretty alarming rate, since the leak was occurring at the highest point in our home. I know that the fix worked because our bedroom, which had been noticeably colder in the winter in years past, was now a more comfortable temperature.