Furnace Life: How Long Will Your System Last?

A furnace is a major household investment, so you want it to last as long as possible. When discussing expected furnace life, you are usually discussing the life of the heat exchanger. Most other components can be replaced, but when the heat exchanger cracks, rusts or fails, it creates a dangerous situation that needs immediate attention. Furnace replacement is usually required, since these components are so costly to replace.

The average heat exchanger lasts 15 years, and it may last as long as 20 years. The exchangers in older furnaces were made of cast iron or other heavy metals, and they can last 30 to 40 years. In rare cases, they’ve been known to last even longFurnace Life: How Long Will Your System Last?er. The problem with older furnaces is that they aren’t very efficient, so you end up spending a lot of money on energy to operate them.

Here are some tips to help prolong the life of your heat exchanger:

  • Schedule annual maintenance for your furnace. Proper maintenance keeps the furnace running efficiently and catches small problems early before they become big ones.
  • Change the furnace air filter every month or two. A dirty air filter makes the furnace work harder and may cause the heat exchanger to overheat.
  • Control the moisture level inside your home to prevent rust on the heat exchanger.

To schedule maintenance that will prolong your furnace life, or to find out about replacing an old furnace, please contact us at Geisel Heating, Air Conditioning and Plumbing. One of the most trusted names in the industry, Geisel has served the Greater Cleveland area for more than 75 years.

Our goal is to help educate our customers in Cleveland, Ohio about energy and home comfort issues (specific to HVAC systems).  For more information about furnaces and other HVAC topics, download our free Home Comfort Resource guide.

For those Do it Yourselfers who would rather take control of your own indoor comfort, you can shop our online store for replacement parts, products and accessories!   

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