How to Choose a Gas Furnace

If you feel the pinch of high utility bills, if the temperature in your home is uncomfortable, or if your existing furnace is 10 to 20 years old, it might be time for a new gas furnace. Looking for the cheapest unit doesn't necessarily mean you'll save money on utility bills. On the other hand, a top-of-the-line unit may not be right for your home.

There is a gas furnace for every home.
  1. Find out the gas furnace's AFUE rating. AFUE, or annual fuel utilization efficiency, calculates how quickly the furnace converts its fuel to energy. The higher the rating, the more efficient the gas furnace is.

  2. Consider condensing models for extra efficiency. A condensing unit uses some of the heat that would have escaped from older furnaces and turns it into heat for your home. Condensing models have an AFUE rating of 90 percent or higher.

  3. Choose a gas furnace with a high electrical efficiency. Even though the furnace operates with gas, electricity powers the fan motor. Choosing a gas furnace with a variable-speed fan motor can make the unit more efficient and save you money.

  4. Pick a gas heater sized appropriately for the space you need to heat. There's no benefit to a furnace with a heating capacity too large for your home. Ask an expert to perform a heat-loss analysis to determine the size of gas furnace you need.

  5. Buy your gas furnace from a reputable company. Purchasing even a top-of-the-line furnace means nothing if the company makes mistakes during installation.

About the Author

Kristan Hart is an award-winning journalist in Springfield, Mo., who provides SEO web copy as a freelance writer/editor. She has a decade of experience and holds a bachelor's degree in mass communications with an emphasis in broadcasting.