How old is my furnace?
Check how old your furnace is using the equipment rating plate. Use the furnace’s own brand, model and serial number, then compare supported date formats and any printed manufacture date. Some formats need original documents or manufacturer confirmation.
Find the age of a furnaceFurnace serial number and manufacture date
- Can I tell furnace age from the first serial digits?
- Only when that is the documented format for the right product family. Some formats use year and month, others week and year, and some start with a plant identifier. The manufacturer guides below show why a single shortcut does not work for every furnace.
- Does the furnace have the same age as the air conditioner?
- Date the furnace, outdoor unit and indoor equipment separately. They may have been manufactured or replaced at different times. A thermostat or service sticker does not establish the furnace’s manufacture date.
Furnace age guides and articles
These manufacturer-sourced guides explain particular formats and their limits. Check the product-family scope before using an example.
- Amana furnace age: Amana heating and air-conditioning equipment
- Carrier furnace age: Carrier HVAC week/year serial format
- Goodman furnace age: Common numeric Goodman HVAC serials
- Lennox furnace age: Lennox HVAC equipment using plant/year/month serials
- York furnace age: York HVAC identification and format differences
- How to photograph a model and serial number label
- Typical appliance lifespan and replacement planning
- How to check appliance recall notices
How long does a furnace last?
A furnace typically lasts 15 to 25 years in normal household use. Once one reaches 15 years, it is worth budgeting for a replacement.
Change the filter every one to three months and have it serviced yearly.
Lifespan guide for every applianceWhere is the furnace model and serial number?
Inside the front panel. Turn the power off before removing the panel.
Tips for a clear photo of the labelCommon replacement parts
- • Air filter
- • Hot surface igniter
- • Flame sensor
- • Inducer motor
- • Pressure switch
- • Blower capacitor
Check your furnace on Appliance Age to get parts links for your exact model.
Recalls
Every check compares the brand, model and serial number with official recall notices.
What a recall means and what to doFurnace age by brand
Amana furnaceAmerican Standard (HVAC) furnaceAmeristar furnaceArcoaire furnaceArmstrong Air furnaceBryant furnaceCarrier furnaceColeman (HVAC) furnaceComfortmaker furnaceDaikin furnaceDay & Night furnaceDucane furnaceFujitsu furnaceGoodman furnaceHeil furnaceIntertherm furnaceJanitrol furnaceKeepRite furnaceLennox furnaceLuxaire furnaceMiller furnaceNavien furnaceNordyne furnacePayne furnaceRheem furnaceRuud furnaceTempstar furnaceTrane furnaceYork furnace
Other appliance types
RefrigeratorRange or ovenDishwasherMicrowaveFreezerClothes washerClothes dryerWater heater (tank)Tankless water heaterBoilerAir conditionerHeat pumpHRVERVDehumidifier
Compare appliances and find parts
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