What is the Average Lifespan of a Furnace, and How can I Make Mine Last Longer?

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You may be able to get away without having a furnace in some of the much much warmer states, but in Minnesota you want to have a good one in working order. Since replacing a furnace can be expensive, you’ll want it to last as long as possible. With proper maintenance, you can lengthen your furnaces lifespan by many years. Most furnaces typically last between 15 and 20 years. With good maintenance, yours could go up and beyond even 30 years. Poor or inconsistent maintenance might cause it to last fewer than 10 years. We don’t want your family to end up cold when they need the heat the most.


There are a number of factors that can lead to a shortened lifespan for your furnace, and they all start with the installation. Improper installation of a furnace can lead to all sorts of issues. Some examples of improper installation can be: using the wrong size furnace for your home, not connecting the pieces of venting well enough which lets out air and decreases efficiency, and not making sure everything is cleaned and tested before the technician leaves. Speaking of cleaning, you are going to want to keep your furnace and the area immediately around it free of dust, grime and other debris. Over time, particles from these messes can build up and collect in the furnace causing lower efficiency. Lowered efficiency makes your device work harder than it needs to, which may eventually lead to your furnace breaking or failing. Part of cleaning is also changing your air filter. We recommend checking your filter every month and changing it roughly every three months.

Here are some ways to make your furnace last as long as possible. First and foremost get your annual tune-ups done by professionals like Twin City Heating, Air and Electric. Finding and fixing a small problem before it turns into a big one can make all the difference to your furnace. Regular maintenance like cleaning out dust, changing your filters regularly, and checking for problems will make your furnace last as long as possible. When you hear your furnace making weird sounds or if you smell unusual smells coming from your system or ducts, make sure to call in a professional and have it checked out. There is a lot of little upkeep that you can do yourself, but when it comes to bigger problems, make sure to use a company you trust, like Twin City Heating, Air and Electric. We install reliable machines and are trained to work on any model of equipment. You’ll be able to truly feel the difference with us!