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HVAC Education, Buying Tips, Furnaces

How Long Does A Furnace Last?

By Travis Baugh

While there is no one specific answer to the question “how long does a furnace last?” there are a number of factors that can affect the lifespan of a furnace. Quality manufacturing from a reputable brand and professional installation are good places to start. Measures you can personally take to help extend the life of your furnace include scheduling regular furnace maintenance and inspections by a qualified professional in addition to following the recommended schedule for air filter replacement.

Your personal comfort preferences and local climate can also be factors – depending on how warm or cold you keep your home, how often the system runs, and temperature extremes all can affect the lifespan of the furnace as well. Don’t discount the amount you use your air conditioning as well because in many cases, a furnace is a vital component in a central air conditioning or heat pump system.

Understanding the many factors involved in furnace lifecycles can help you make critical decisions regarding repairing or replacing your furnace. And if your furnace is nearing the end of its lifespan, Carrier offers a number of home furnaces to fit a variety of needs and budgets.

FAQs About How Long Does A Furnace Last

A furnace that receives regular maintenance can last at least 15 to 20 years, but completing annual maintenance and being diligent with repairs can extend the life of a furnace even longer.
Yes, it is often worth replacing a 20-year-old furnace. At this age, efficiency typically declines, leading to higher heating bills and increased repair costs. Newer models are more energy-efficient, which can significantly reduce heating expenses and improve comfort.
Yes, furnaces can last up to 30 years, particularly high-quality models with proper maintenance. Factors like regular servicing, timely repairs, and appropriate usage significantly impact their lifespan. However, most gas furnaces typically last between 15 to 20 years before efficiency declines and repair costs increase, so it's wise to consider replacement around the 15-year mark to ensure optimal performance and safety.
Learn More

1https://www.energy.gov/energysaver/thermostats

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