If you recently moved into a new house or have never checked your furnace’s age, you may be wondering how old it really is. Knowing your furnace’s age can help you plan for maintenance, repairs, and even replacement before it breaks down unexpectedly. Thankfully, most manufacturers make it relatively easy to determine the age by incorporating it into the serial number. In this guide, we’ll walk you through determining your furnace’s age by decoding its serial number.
Determining the Age of a Furnace Using a Serial Number
The easiest way to find out your furnace’s age is by checking the serial number. You’ll often find the serial number in one of the following locations:
- Inside the small door on the front of the unit
- As a stamp on the fan blades or blower motor
- On a label inside the burner compartment
- On the side or back of the unit
After you find the label, visit the manufacturer’s website to learn how to decode it, as each company formats serial numbers slightly differently. Examples of how to decode popular brands include:
- Lennox: The second two numbers indicate the year the product was manufactured. For example, if the serial number is 12150B12345, it was made in 2015.
- Carrier, Bryant, and Payne: The serial number’s first two digits represent the week it was manufactured, and the second two represent the year. For example, a serial number that begins with 0115 was made during the first week of 2015.
If you’re having trouble, you can contact the manufacturer directly, and they’ll be able to help you with decoding instructions. Some websites also offer a furnace serial number lookup, where you can enter the serial number to determine the production date.
Determine the Age by Finding the Manufacturer’s. Another way to determine your furnace’s age is to look at the manufacturer’s plate. You’ll typically find this inside the blower compartment, on the side panel, or near the burner assembly. The plate will feature the model and serial number, which you can input into the manufacturer’s furnace model number lookup. You’ll receive information about the furnace’s profile to help you determine its age.
Figuring Out the Age if I Can’t Find the Vital Number or Date Plate
If you can’t locate the serial number or date plate on your furnace, you can try to determine its age by requesting the warranty information from the date of purchase.
- Contact the manufacturer for a record of the furnace purchase.
- Look for a tag or sticker on the unit that lists the installation date.
- Call the HVAC company that installed your furnace to request a record of the installation.
Common Signs of an Aging Furnace
On average, furnaces last between 10 and 15 years with routine maintenance. When your unit nears the end of its lifespan, it’ll start showing warning signs that it’s on its last legs. The top signs to look out for include:
- Rising energy bills: Furnaces lose their efficiency over time, causing them to work harder and use more energy to heat your home. If your heating bills are slowly increasing, an aging furnace may be the culprit.
- Loud noises: If your furnace makes loud banging, rattling, or squealing noises, it may have worn-out parts or mechanical failure, signaling that it’s nearing the end of its lifespan.
- Uneven temperatures: If some rooms in your home are significantly warmer or colder than others, your furnace may be struggling to distribute heat evenly.
- Constant repairs: As furnace components wear out over time, you’ll start to notice the need for more frequent repairs. If your repair bills start adding up, it may be time to consider a replacement.
Professional Inspection and Assessment
If your furnace shows signs of aging, consider scheduling a professional inspection and assessment. An experienced HVAC technician can evaluate your unit to determine whether repairs can help extend its life or if furnace replacement is the most cost-effective solution.
During the inspection, they’ll check, run out components, test efficiency, and look for safety risks like carbon monoxide leaks. With a professional inspection, you’ll have peace of mind knowing that your furnace is operating safely, avoid unexpected breakdowns, and maximize its efficiency.
When Is It Time to Replace a Furnace?
If your furnace is showing signs of failure or struggling to meet your heating needs, it’s probably time to consider a replacement. When debating whether replacement is the best option, consider the following factors:
- The cost of repairs: If your furnace repairs cost more than 50% of the unit’s price, a replacement is likely the wiser choice.
- Energy savings: Modern furnaces are significantly more energy-efficient, helping lower your heating bills and reduce your carbon footprint.
- System age: Even well-maintained furnaces typically don’t last longer than 15 years. If your unit is nearing this age, it’s best to service it before an unexpected breakdown leaves you in the cold.
Does the Age of My Furnace Affect Energy Efficiency?
As furnaces age, wear and tear reduce their efficiency, forcing them to work harder to keep your home warm and cozy. This increased strain increases energy consumption and monthly utility bills. Upgrading to a new, high-efficiency furnace helps reduce energy waste while offsetting the cost of the investment with lower heating bills. You’ll see improved comfort, lower energy usage, and fewer breakdowns.
Contact the Professionals at G & R Heating and Air to Learn More About Options For Your Aging Furnace!
Whether you need help determining the age of your furnace or you’re intereyou’ren upgrading, the team at G&R Heating and Air is here to help. Our expert technicians work with all furnace makes and models to offer professional inspections, repairs, and replacements in the Chicago suburbs. If we discover that your furnace is due for replacement, we’ll guide you through your options and help you find a new, high-efficiency model tailored to your home’s heating needs.
Visit us online or call directly to book your appointment today!
