The Average Lifespan of HVAC Systems

If you’ve had a new heating and cooling system installed at home, you probably wondered: How long should my HVAC system last?

Today, the team at Superior Air Duct Cleaning discusses the average lifespan of your home’s furnace, AC units, and ductwork.


On average, the lifespan of a new furnace is 15 to 20 years. As it starts to wear down, individual parts may need to be replaced occasionally so you can avoid replacing the entire unit. For furnace repairs or issues with the heat exchanger, consult an HVAC technician.   

Related Post: History of HVAC Systems

AC Units

Central air conditioners typically last 10 to 15 years. The most valuable part of the AC system is the compressor, which can worsen if the unit does not properly meet your home’s cooling needs. It’s best to reach out to a professional for more information about the correct size AC unit for your home. Similarly, if you notice that your unit is continuously turning on and off or is over 10 years old, contact a professional to install a new model.

Related Post: The Importance of Filter Maintenance


Ductwork usually lasts between 10 and 15 years in most homes. Ducts older than 15 years should be replaced to prevent pests, gaps, and drafts, so your home temperature is always comfortable. While residential ductwork can deteriorate over time, you can extend its longevity by scheduling regular air duct cleaning from the pros at Superior Air Duct Cleaning.

How Ductwork Deteriorates

In the winter, the heat causes the ductwork to expand, while in the summer, the cool air causes it to contract. This movement is capable of pulling your ductwork apart and may cause leaks. Additionally, non-insulated metal systems may rust from condensation that forms during the summer AC usage. After many years, the quality of an old HVAC system may no longer be acceptable compared to the energy-efficient HVAC technology of today. It’s important for homeowners to periodically inspect their ductwork and locate any developing leaks.

Related Post: Superior Air Duct Explains: What Causes Damaged Ductwork?

Contact Superior Air Duct Cleaning

If you live in the Pittsburgh area and haven’t gotten your ducts cleaned in a while, Superior Air Duct Cleaning is your solution. With a powerful vacuum and visual proof of a job well done, we perform the most thorough air duct cleaning in the area. For more information, request a free quote or call us directly at 1-800-803-3828.  

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