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Gas Furnaces

Gas Furnaces FAQs

How much does it cost to replace a gas furnace?

Our smallest and most affordable gas furnaces cost around $600, while more efficiency-maximizing options can cost as much as $5,000. No matter your financial situation, a gas furnace is an important investment. Be sure to browse the benefits of different furnaces before committing to an option — or ask a technician for help finding the furnace that’s right for you. 

Note: It is recommended that you have your gas furnace inspected at least once a year by a licensed technician; a furnace's normal lifetime should be between 15 and 30 years. 

How does a gas furnace work?

Gas furnaces work by burning a flammable gas, like propane or natural gas. The heat is then conducted through a heat exchanger, which warms the air. Warm air is forced through ductwork and then blown into the home or office, warming the space. 

Those interested in a gas furnace for their space can browse our 80,000 BTU furnaces and 60,000 BTU furnaces, which are comprehensive heating options. If you’d prefer to see further options, consider finding an electric furnace for your home. 

What size gas furnace do I need?

The size of the furnace you need depends on a few factors. These include:

  • Square footage. You can calculate square footage by multiplying the length and width of the rooms in your home, and multiplying them. For multiple rooms, find the square footage of each, then add them together. 

  • Insulation. Homes with newer insulation might not require the same heating capacity as ones with poorer insulation. 

  • Doors and windows. The more doors and windows there are in a space, the more energy it takes to warm it. 


Climate. Climate is one of the biggest factors to consider. Colder climates will require higher-BTU furnaces to effectively warm a space.

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We believe that it shouldn't be difficult to find the right furnace for your house. Our gas furnaces come in a wide range of sizes and styles to suit a variety of needs. Browse our selection of gas furnaces to find the most energy-efficient option for heating your home or office.

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