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What Is A Furnace’s Life Expectancy And Signs Of A Dying Furnace

Jul 06, 2016

A living space heated by a Lennox furnace where a woman is relaxing with her dog on the couch feeding it treats.

One of the concerns of homeowners when they are purchasing a new furnace or deciding whether or not to replace their present unit is, “what is the expected life span of a furnace”? This is a nice question, but how long is a furnace supposed to last depend on a number of factors. In this blog post, we are going to talk about the average life span of a furnace and what are the signs that suggest that your furnace is dying.

What is the average life span of a furnace?

The expected life span of a furnace has a direct relation to how well it is maintained, whether or not it was installed properly and how often it is used. Generally, you can expect a properly installed and well maintained furnace to last around 15-20 years. But, if your furnace is not maintained properly and or it wasn’t installed in a right manner, its life expectancy can decrease by a several years.

Having a furnace go out of service unexpectedly is one of the very nerve-racking experiences a homeowner faces. Thankfully, furnaces give some warming signs of when they can go out of service, and these signs are very obvious and evident to anyone in the home- you just need to what to look for. By looking for these signs, you can be ready for a furnace replacement or repair when it is the time. Additionally, you can avoid health risks that you can face from using an old furnace.

Age of your furnace:
According to the Department of Energy, the expected lifespan of today’s furnaces is approx 16-20 years. If your furnace is approaching towards it, you must consider getting a new one now. If you are living in the same for several years and you are not sure how old your furnace is, look for a pilot light. If your furnace has a pilot light, then it is at least 25 years old.

Fixing the thermostat
Are some rooms more cozy and warm than others? Do you often find yourself tinkering with the thermostat more than you used to? If yes, then it is likely a sign that your furnace is losing its ability to distribute air properly around your home. For a time being, close the registers in any rooms you are not using. This will let the heat to concentrate in the living areas of your house. It is not a permanent solution, but it could help you get some time until you get the new furnace installed.

Awkward sounds
Is your furnace making strange squealing, banging or popping noises? Rest assured that it is a sign that your furnace is about to die. Old furnace starts to make these sounds as a result of working really hard to heat your house. You can also get your furnace checked by an expert, but be prepared that you have to replace your furnace in the near future.

Risk of carbon monoxide
Have a look at the burner flame in your furnace. If the flame is yellow rather than blue, your furnace may be producing carbon monoxide.