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The Smarter Way To Replace Your Furnace

Is it time to replace your furnace? It’s easy to forget about an appliance that can last nearly a quarter of a century. Furnaces have long lifespans, but that also means technology improvements between upgrades can be considerable.

If you have an old furnace, it may pay off to replace it before it gives way completely.

One thing to keep in mind is how often you should replace your furnace. Most furnaces will last around 15-25 years, but age is not the only factor in the lifespan of a furnace.

Take into consideration factors such as maintenance, parts, and how many days per year you keep your furnace running. On average, furnaces are used for about 180 days in a year, but in some places, that could be even longer.

Rather than go on age alone, consider performance and look for signs that it’s time to replace it. Some of these signs include:


  • Your energy bills are creeping up without any change to your rates
  • Excessive dryness in your home that you didn’t used to experience
  • Uneven heating in rooms in your home
  • Strange noises coming from your furnace such as rattling, buzzing, or humming
  • Cracks or rust forming on your furnace


These are the biggest signs that your furnace is reaching the end of its life, maybe even more so than its actual age. Another tell-tale sign is requiring frequent repairs, but that brings up another consideration.

If you’ve been having problems with your furnace, you may be tempted to fix the furnace instead of a wholesale replacement. When you’re confronted with a furnace issue, do you call in a technician or do you replace the whole system?

After all, you could be spending a few hundred dollars on a quick fix only to have buy a whole new system anyway in the next year or two.

With a new furnace, you should save on repairs and maintenance for the first few years. If you’re debating between upgrading today and paying for more repairs, you could wind up saving long-term by upgrading now.

There’s also the option to rent; if you can’t afford to pay for a new furnace and installation right now, you can often rent instead.

One last reason to upgrade your furnace before winter is that it can save you on energy costs. Furnace standards have improved considerably over the last several decades, driven by a combination of regulations and advanced technology.

A 25-year-old furnace is likely only about 80 percent efficient, while today high-efficiency furnaces range from 90 percent to as high as 97 percent. If only 3 percent of the energy you put into heating your home gets wasted compared to 20 percent, you could instantly see considerable savings on your energy bill. Why wait to save money if you’re going to have to replace your old furnace or HVAC system soon anyway?

Upgrading your furnace now can save you money and frustrations down the line. Having to replace your furnace suddenly because it breaks down in the middle of winter will make your family miserable. Replace your furnace now while you have time to compare prices and the service offered by different companies. You will thank yourself later.