How can I determine the age of my furnace?

March 28, 2019

When you move into a new residence, there is a lot to take in and study as you get settled in. You’re figuring out all of the new appliances and different spaces. For some homeowners, it also means seeing what upgrades or updates need to be made at some point. It may not always be top of mind, but your heating and cooling system needs to be on the list of potential to-dos. It plays a critical role in home comfort, so knowing a little bit more about your system is very useful.

As long as they are operating without challenges, we don’t pay a lot of thought to our furnaces. But as soon as it goes out, or causes challenges, we absolutely notice. That’s why it’s a good idea to find out how old your furnace is. Then you have an understanding of what you might deal with later on. And this doesn’t just pertain to homeowners moving into a new space. Anyone who isn’t certain how old their furnace is should take time and figure it out.

How can you identify how old your furnace is?

Your furnace should have a sticker located someplace on the exterior or interior paneling. If you don’t see a sticker with the model and serial number on the exterior, find where the paneling opens up and check if it’s located inside that door.

Write down—or take a photo of—the serial number to keep for your records. Then head to the manufacturer’s website or search for guidelines on how to determine the manufacturing date. You may try searching for “find manufacturing date of YOUR BRAND furnace.” The serial number typically provides insight into the age of your system, but it does change among brands. For example, for some brands, the first four numbers mean the year and month it was manufactured. In the photo below, the serial number means this particular system was made in July 2015.

Serial number on a furnace 

If you are still having issues, you can communicate with the manufacturer directly, or contact Jett's Heating & Air Inc. for support.

Why is the age of your furnace important?

Sometimes, when you’ve had a furnace about 15 years, it’s time to start shopping for a replacement system to help increase efficiency and overall operations. Newer models tend to have higher energy efficiency ratings and you’ll definitely benefit from the advancements in technology over the recent years.

You don’t have to rely on just the age of your furance, there are other indications that it might be time to search for a new furnace. A handful of these signs include:

  • Increase in energy costs without major adjustments to the thermostat.
  • More frequent and costly repairs to fix the furnace.
  • Decrease in home comfort levels—you never seem to feel warm enough.

If you have questions about whether it’s time for a furnace replacement, or if you want one of the most experienced technicians in McHenry to provide you with some guidance, we’re here for you. You can call us at 815-410-1128 or book an appointment with us online.