howoldisthat

How old is that?

Scan the label on a water heater, furnace, AC, appliance, tire or car battery. Type the serial number from a water heater, furnace, AC, appliance, tire or car battery, or scan the label with your phone. You’ll get the build date and how much life it likely has left.

Tap to scan a label

Water heater, furnace, AC, appliance, tire or car battery

or type it in

Try one:

Or pick what you’re checking

How it works

Makers hide the build date in the serial number or date code. Each brand uses its own pattern, and some change it over the years. The scanner reads the label, works out the brand and kind of equipment, and decodes the date using the formats each maker published, with sources on every brand page.

Everything runs on your phone. The camera picture is never uploaded. When a code could mean two dates, the result says so instead of guessing.