How old is my Carrier furnace?

1. Find the rating label: On the rating plate sticker inside the front door panel; the panel comes off by turning its knobs counterclockwise and pulling it toward you.
2. Take a photo of the whole label, or note the model and serial numbers.
3. Check it on Appliance Age. It is free, and no account is needed.

On the rating plate sticker inside the front door panel; the panel comes off by turning its knobs counterclockwise and pulling it toward you.

Keep the model, serial and any separate production code or printed date together. Not every serial number contains a publicly decodable date.

Carrier serial number: production week and year

Carrier HVAC week/year serial format · Sources checked October 12, 2026

A documented Carrier format places the production week in serial positions 1–2 and the year in positions 3–4. The following letter identifies the manufacturing location; it is not a month letter.

Read the serial from the unit rating plate. A furnace and its outdoor cooling unit can have different manufacture dates, even when they were installed together.

The cited manual covers the 38AU condensing-unit family. Older and other Carrier families can use different formats; check the model before applying the example.

• Carrier 38AU installation instructions: serial-number nomenclature

Use the format that belongs to this product family. A printed production date, a supported serial code or manufacturer confirmation can establish the age. Repeating year codes may leave more than one possible year; a model-series introduction date helps narrow the range but does not date your individual unit.

Furnaces typically last 15 to 25 years. Use, water quality and maintenance matter more than the brand. Change the filter every one to three months and have it serviced yearly.

148 Carrier models are currently ENERGY STAR certified, 141 of them sold in Canada. The certified models went on the market between 2011 and 2023. An older Carrier furnace may use more energy than today's certified models.

Source: ENERGY STAR open data, 2026-10-08.

Parts that wear out most often on furnaces:

• Air filter
• Hot surface igniter
• Flame sensor
• Inducer motor
• Pressure switch
• Blower capacitor

Have the model number from the rating label ready so the parts fit.

Every Carrier check is compared with Health Canada, U.S. CPSC and U.S. NHTSA recall notices.

Questions

How do I find out how old my Carrier furnace is?

Find the rating label (On the rating plate sticker inside the front door panel; the panel comes off by turning its knobs counterclockwise and pulling it toward you), then enter the serial number or a photo of the label on Appliance Age. It checks supported serial date codes or a printed date for you, free; some formats need more information.

Where is the serial number on a Carrier furnace?

On the rating plate sticker inside the front door panel; the panel comes off by turning its knobs counterclockwise and pulling it toward you.

Can I tell how old my Carrier furnace is by the model number?

The model number tells you which model it is, not when your unit was made. Look for a manufacture date or a supported date code in the serial number, printed next to the model number on the same label.

Can I decode a Carrier serial number myself?

Some Carrier product families have serial date codes, while others need a printed date or manufacturer confirmation. Repeated year codes can produce multiple candidate years; the model and original documents help resolve them.

How long does a Carrier furnace last?

Furnaces typically last 15 to 25 years with normal use and maintenance.

Where can I get Carrier furnace parts?

From Carrier's official parts store, or an appliance parts retailer. Have the model number from the rating label ready.

Other Carrier appliances

• Carrier boiler
• Carrier air conditioner
• Carrier heat pump
• Carrier dehumidifier