Man doing maintenance on a furnace

How can I determine the age of my furnace?

When you move into a new house, there is a lot to take in and consider as you get settled in. You’re getting to know all of the new appliances and different spaces. For some homeowners, it also means seeing what upgrades or updates need to be made later on. 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 key role in home comfort, so learning a little bit more about your system is very valuable.

As long as they are operating without challenges, we don’t pay a lot of care to our furnaces. But as soon as it goes out, or causes challenges, we definitely 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 in the future. 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 anyplace 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 to have on hand. Then go 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 differ 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 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 White Mechanical, Inc. for assistance.

Why is the age of your furnace significant?

Typically, when you’ve had a furnace about 15 years, it’s time to start searching for a replacement system to help improve 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 factors that show it might be time to shop for a new furnace. Some of these signs include:

  • Rise in energy costs without major adjustments to the thermostat.
  • More recurrent and costly repairs to fix the furnace.
  • Decrease 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 Rancho Santa Margarita to provide you with some guidance, we’re here for you. You can call us at 949-284-6382 or schedule an appointment with us online.

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