Maintaining Furnace Efficiency With an Old Furnace
You are running high energy bills and you are thinking maybe it's time to replace your old furnace with a modern, more energy-efficient one. Buying a new furnace is not only costly, but it will also take you a long time before you can recoup your investment. Besides, your old furnace still has several years of mileage left. So before you go for a new furnace, consider ways you can make your current one more energy efficient.