Year + production week
1924115263020
Week 24, 2019 (around June).
Water heaters / American
How old is my American water heater?
AmericanChange
Ad space (kept empty until an ad network is approved)
Where to find the serial number
Look for “Serial No.” on the label above the gas valveAmerican serial formats we can read
Dark = year, orange = month or week.
Coverage and sources
V1 supports the 13-digit year/week format only. Published descriptions conflict for the older 10-digit layout, so that layout is deliberately excluded. The worked example is from the American manufacturer family reference.
References checked 2026-10-26.
- www.building-center.org/american-water-heater-age/
- insider.energytrust.org/wp-content/uploads/CPF_Serial_Water_Heater.pdf
Independent reference tool, unaffiliated with American. Sources & method