While some furnaces can last over 40 years (extremely rare), the average lifespan of a typical gas furnace is around 15-30 years. As long as you have scheduled yearly furnace maintenance, your furnace should easily last over 15 years.

Here are some factors that will affect how long your furnace will last:

  • Make and model of the furnace (newer systems have longer lifespans than older units).
  • Frequency and quality of furnace maintenance. In order to maintain manufacturer’s warranties and keep your system clean and efficient, schedule fall furnace maintenance every year with a licensed Green Apple technician that also fully cleans your system. Learn more about professional furnace tune-ups.
  • Moisture levels and proper ventilation. Too much moisture can cause heater components to rust and premature breakdowns. Moisture is especially harmful to heat exchangers.
  • Proper installation. According to Energy Star, over half of all new HVAC systems are improperly installed. As a result, rated efficiency levels can be reduced as much as 30% and can lead to premature breakdowns, comfort problem, and insufficient air distribution and dehumidification. The most important day of your furnace’s life is the day it is installed.

As you can see, many factors play a role in how long your furnace will last. No one thing will be able to tell you how long your furnace will last (age, tune-ups, humidity levels, installation). If you have any questions or concerns regarding any of your HVAC or plumbing needs call toll-free @888-611-7191

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