How can I determine the age of my furnace?

March 28, 2019

When you move into a new home, there is a lot to take in and think about as you get settled in. You’re messing around with all of the new appliances and different spaces. For some homeowners, it also means contemplating 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 must 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 beneficial.

As long as they are working without issues, we don’t pay a lot of care to our furnaces. But as soon as it goes out, or causes issues, we absolutely notice. That’s why it’s a great 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 affect homeowners moving into a new space. Anyone who isn’t clear 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 somewhere 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 see if it’s located inside that door.

Write down—or take a photo of—the serial number for reference. Then go to the manufacturer’s website or search for instructions on how to figure out the manufacturing date. You might want to 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 vary among brands. For example, for some brands, the first four numbers represent the year and month it was manufactured. In the photo below, the serial number indicates this particular system was made in July 2015.

Serial number on a furnace 

If you are still having problems, you can reach out to the manufacturer directly, or contact Morgner Inc. Air Conditioning & Heating for help.

Why is the age of your furnace significant?

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

You don’t have to rely on age alone, there are other signs that indicate it might be time to shop for a new furnace. A few of these signs include:

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

If you have conflicting thoughts about whether it’s time for a furnace replacement, or if you want one of the most experienced technicians in St. Louis to give you some guidance, we’re here for you. You can contact us at 314-262-4541 or arrange an appointment with us online.