If You Need a New Furnace, Your Fuel Type Will Affect the Cost

Energy efficiency ratings of furnaces and boilers fluctuate from brand to brand and model to model. But one of the factors you also need to consider if you are replacing a furnace or boiler is the type of the fuel you will use and how much it costs.

Although electric furnaces the best efficiency ratings of 95% to 100% they usually are not the most cost effective. Electricity is a much more expensive fuel than natural gas, so what you save in the fuel efficiency of the new furnace may be lost in high electric bills.