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www.servicechampions.net/blog/how-long-will-furnace-last...

Average Furnace Lifespan. 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:

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• Natural gas furnaces often last twice as long as electric heat pumps. Because they operate year-round for heating and cooling, electric heat pumps typically last 10-12 years. By contrast, natural gas furnaces often last about 20 years.

www.realtor.com/.../how-long-does-a-furnace-last

How long does a furnace last and what exactly does it do for your home? The furnace is one of the most important appliances in your home, as it keeps you and your loved ones comfortable during ...

homeguides.sfgate.com/long-average-furnace-last-87533.html

Time's Up. Generally speaking, a furnace can be expected to last between 15 and 20 years. This average varies, of course, based on the quality of the unit, how it's used and whether it has been ...

www.griffithenergyservices.com/articles/how-long-will-a...

This being the case, many people wonder how long their furnace will last, especially if they have an older model. The standard for measuring furnace life is the heat exchanger. Not only is this the most vital part of the system, it’s the one piece that can’t be repaired or replaced. Once it fails or cracks, it’s time to buy a new furnace.

www.reference.com/home-garden/long-gas-furnace-last-2c22cd...

How Long Does a Gas Furnace Last? The average lifespan of a gas furnace is 15 to 25 years. However, lifespan depends on a number of factors, including when the furnace was built, the materials it is made out of and maintenance.

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If you have a furnace with a cast iron exchanger, it could last longer, although they are typically less efficient. Furnaces do require proper maintenance, and with good care, you might even benefit from more than two decades of warm, comfortable air in your home.

www.griffithenergyservices.com/articles/furnace-30-years...

How long do gas furnaces last? Every appliance in your home has its own distinct lifespan. If your Easton, Maryland, furnace is 30 years old, you’re probably approaching the end of its lifespan and the period where you need to think ahead to its replacement.

www.thisoldhouse.com/ideas/how-long-things-last

Furnaces on average last 15-20 years, heat pumps 16 years, and air conditioning units 10-15 years. Tankless water heaters last more than 20 years, while an electric or gas water heater has a life expectancy of about 10 years. Thermostats usually are replaced before the end of their 35-year lifespan due to technological improvements.

www.reference.com/home-garden/long-furnace-last-4cd37a594f...

The average furnace lasts 15 to 20 years. This life span is typical of a furnace with a stainless or aluminized steel heat exchanger. In contrast, old furnaces with heavy metal heat exchangers last for 30 to 40 years, but they are less efficient than newer models, prompting many homeowners to replace them even if they still work.