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HVAC Education, Buying Tips, Furnaces, Heat Pumps, Troubleshooting, Technology

How Long Do Furnaces Last?

A well-maintained furnace can last at least 15 to 20 years, but completing annual maintenance and being diligent with repairs can extend its life even longer.

Warranties provide peace of mind, and Carrier includes a standard, 10-year parts limited warranty* for furnaces, so you can rest easy knowing your equipment is covered for an extended period of time. When your furnace is about 15 years old, it’s a good idea to start looking at new equipment to be prepared when it comes time to replace it. Before buying a furnace, you’ll want to learn about the most modern, energy-efficient options out there and get an idea of cost.

* To the original owner, when the product is used in a residence, a 10-year parts limited warranty applies upon timely registration of your new equipment. Warranty period is five years if not registered within 90 days. Jurisdictions where warranty benefits cannot be conditioned on registration will automatically receive a 10-year parts limited warranty. See warranty certificate for complete details.


What affects how long my furnace lasts?

  • Size
  • It’s important to have an appropriately sized system for your home.

    • Shorter cycles create more wear and tear on the parts of a furnace, so if the system is larger than necessary, it will turn on and off too quickly.
    • Furnaces that are too small for the space may stay on too long and struggle to heat your home, which can also add wear and tear on parts.
  • Installation
    • Poorly designed, sized, or sealed ductwork impacting airflow
    • Poor drainage system for high efficiency furnaces
    • Incorrectly installed fuel lines
  • Lack of routine maintenance – it’s important that you are regularly changing furnace filters
  • Thermostat set too high or too low—the optimal range is between 60 °F and 80 °F

How Will I Know if It’s Time to Replace My Furnace?

  • Frequent service calls
  • Expensive repair bills
  • Uneven temperatures
  • Inability to stay at the thermostat’s temperature setting
  • Furnace blowing cold air
  • New or increased noises
  • Increase in energy bills
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How can we help you?

If you prefer to speak to someone in person, call 1-800-Carrier (1-800-227-7437) .


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