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How Long Should A Furnace Last?

While there isn't an exact answer to how long your furnace will last, there are expected time frames and ways that you can help increase the lifespan of your system.

Several factors can affect the lifespan of your furnace, such as improper installation and low-quality manufacturers. Although these factors are hard to avoid, it is important to invest in a trusted heating and cooling company.

There are things that you can do to maintain the lifespan of your system. A big one is getting proper maintenance done and keeping up on tasks that avoid repairs, such as replacing the filter when needed. Understanding these factors can help you make continuous decisions when taking care of your furnace and help you better understand when to repair or replace your system when the time comes.

So, now let's talk about the average lifespan of your furnace. On average, your system should last about 15-20 years. Staying on top of necessary tasks and maintenance can even expand the lifespan of your system. Although there are ways to expand the lifespan, it is important to also stay practical. For example, if your system is old enough to greatly increase your energy bills but other than that it is in working condition, it may still be ideal to replace.

Now you might be wondering what could reduce your system’s life expectancy. Knowing what to avoid is key when it comes to keeping your system in prime condition.

If you plan to get a new system installed soon, or when the time comes, you must get the right size of furnace for your home. If the system is too small for your home, it will work too hard to get your space to the right temperature. If the system is too large for your home, it will turn on and off too frequently, causing unnecessary wear.

Lack of annual maintenance will lead to a shortening of the lifespan of your system. Ignoring recommended tasks and repairs will prevent your system from performing as well as it should, leading to faster wear and tear.

Lastly, the settings that you decide for your thermostat make an impact on the lifespan of your furnace. We recommend keeping your system set at 68 degrees Fahrenheit during the winter. Setting the thermostat too high or too low can increase the frequency when it turns on and off, which leads to excessive wear and tear.

If you have heating and cooling questions, need to set up an appointment, or want to learn more about the maintenance plans that we offer, visit our website at or call us at 515-965-7272.

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