If you live in a cold climate, you may feel like you cannot do little about heating costs, other than locking in early on fuel prices with local dealers. But there is another way to save money and improve heating efficiency:
Consider installing a variable speed fan, which is more efficient than a single-speed fan. Furnaces use a lot of electricity to power the fan motor that circulates air through your house. If you run the furnace fan continuously, a variable speed fan can save hundreds of dollars in utility charges a year.