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How old is my American Standard furnace or AC?

Type the serial number from the American Standard label to see when it was built. American Standard units are built by Trane, so the serials follow that company's format.

Scan insteadWhere is the label?

Example

7165RHAIG
  • 7Year: 7 = 2007
  • 16Week: 16 (around April)

Built Week 16 of 2007 (around April)

19 years, 6 months old

In replacement window. Inside the usual 15 to 25 year lifespan, so replacement could come any time. Worth budgeting for it.

What to do now

  • Get a replacement quote now, before a breakdown in the hottest or coldest week forces a rushed choice.
  • A common rule of thumb: if the repair cost times the age in years is over 5,000, replacing usually makes more sense.
  • Ask about rebates. Many utilities and states pay toward a high-efficiency replacement.
  • Some home insurers and home buyers’ inspectors ask the age of the HVAC system. Florida 4-point inspections record it.
  • Most HVAC parts warranties run 5 to 10 years and require registration within 60 to 90 days of install. Check with the installer.
How this was read
  1. The serial has 9 characters and starts with a digit, the format Trane used from 2002 to 2009.
  2. The first digit, 7, is the year: 2007.
  3. The next two digits, 16, are the week of the year.
  4. If your serial really has 10 characters, check that you copied every one. Newer serials start with two year digits.

Format: Trane one-digit year and week. Sources: CPSC 2017 Trane furnace recall (serials 16304 to 16324), CPSC 2015 Trane and American Standard heater recall, CPSC 2005 American Standard packaged unit recall, Building Intelligence Center: Trane, InterNACHI forum: dating a Trane with a 1992 label.

Reading a American Standard serial number

American Standard and Trane units are built in the same plants and use the same serial formats. CPSC recall notices list both brands under one serial range.

About American Standard

  • American Standard Companies bought Trane in 1984 and sold Trane and American Standard air conditioners side by side.
  • In 2007 the company sold its toilet and faucet business to Bain Capital and renamed itself Trane. Trane kept the American Standard name for heating and cooling. The plumbing brand is a separate company.
  • Ingersoll Rand bought Trane in 2008 and kept the American Standard Heating & Air Conditioning brand.

Sources: American Standard Companies Inc. Form 10-K for 2001, July 24, 2007: American Standard To Sell Bath and Kitchen Business to Bain Capital, Ingersoll Rand Completes Acquisition of Trane

Trane two-digit year and week

Used 2010 to today. Example: 1447B2BP1X

The serial has 10 characters. The first two digits are the year and the next two are the week of the year. 1630 means the 30th week of 2016.

Worked example: 1447B2BP1X was built Week 47 of 2014 (around November), so it is 11 years, 11 months old as of October 2026.

Sources: CPSC 2017 Trane furnace recall (serials 16304 to 16324), CPSC 2015 Trane and American Standard heater recall, CPSC 2005 American Standard packaged unit recall, Building Intelligence Center: Trane, InterNACHI forum: dating a Trane with a 1992 label

Trane one-digit year and week

Used 2002 to 2009. Example: 7165RHAIG

The serial has 9 characters. The first digit is the last digit of the year (2 to 9) and the next two digits are the week. 338 means the 38th week of 2003.

Worked example: 7165RHAIG was built Week 16 of 2007 (around April), so it is 19 years, 6 months old as of October 2026.

Sources: CPSC 2017 Trane furnace recall (serials 16304 to 16324), CPSC 2015 Trane and American Standard heater recall, CPSC 2005 American Standard packaged unit recall, Building Intelligence Center: Trane, InterNACHI forum: dating a Trane with a 1992 label

Trane year letter and week

Used 1983 to 2001. Example: G03504353

The serial has 9 characters. The first letter is the year and the next two digits are the week. G03 means the 3rd week of 1992. Guides disagree on S and Z: most say S is 1986 and Z is 2001, a few say the reverse, so the checker shows both.

Worked example: G03504353 was built Week 3 of 1992 (around January), so it is 34 years, 9 months old as of October 2026.

The full lookup tables are on the Trane page, since American Standard uses the same code.

Sources: CPSC 2017 Trane furnace recall (serials 16304 to 16324), CPSC 2015 Trane and American Standard heater recall, CPSC 2005 American Standard packaged unit recall, Building Intelligence Center: Trane, InterNACHI forum: dating a Trane with a 1992 label

American Standard recalls

Recalls from the U.S. Consumer Product Safety Commission that name American Standard. Whether a unit is included depends on its model and build date; the checker above flags matches.

YearRecallHazard
2025Trane and American Standard gas-electric packaged unitsThe gas valve can open on its own and leak gas, which can cause a fire.
2016Trane, American Standard and Ameristar gas furnacesA loose ground wire can cause a shock if a part shorts out.
2015Trane and American Standard air handler electric heatersA heater wired with reversed polarity can overheat and start a fire.
2014Trane XB300 and American Standard Silver SI air conditionersGround screws may not hold, which can cause a shock.
2005Trane and American Standard gas-electric packaged unitsThe gas valve can crack and leak gas, which can ignite.
2004Trane and American Standard air handler electric heatersHeater wiring can overheat and start a fire at the wall thermostat.
2001NOx rod gas furnaces sold in CaliforniaThese furnaces can start a fire.
1999Trane and American Standard air handler electric heatersMiswired heaters can keep cycling and start a fire.
1996Ducane-built oil furnaces sold under many brandsThe heat exchanger can crack.