Independent equipment intelligence
Read the serial.
Know the date.
Decode HVAC and water-heater manufacturing dates without uploading a serial number or label photo. Every result explains the exact characters and rule used.
Instant equipment lookup
Decode the manufacturing date
See exactly how the code was read
SerialAtlas highlights the date characters, names the matching rule, and shows alternative interpretations when the code is ambiguous.
- Current age calculated automatically
- Confidence and rule source shown
- Optional model-capacity clue
Local photo workbench
Read a difficult rating plate
Your photo never leaves this browser. Rotate, zoom, and increase contrast while you type the serial above.
Saved on this device
Recent lookups
Transparent by default
An answer you can audit in thirty seconds.
SerialAtlas exposes the matched rule, date characters, confidence, source, and plausible alternatives instead of returning an unexplained year.
- 01
Normalize safely
Spaces and punctuation are removed locally; letters, digits, and leading zeroes are preserved.
- 02
Match only relevant rules
The selected brand and product category determine which documented formats are eligible.
- 03
Keep uncertainty visible
Repeating cycles and overlapping formats appear as alternatives for human verification.
EXAMPLE DATE CODE
Coverage built for field use
Primary brands, sister labels, and legacy names.
The decoder shares verified rule families without creating a thin search page for every private-label alias.
Popular HVAC brands
Popular water-heater brands
Original field guides
Better label photos. Fewer bad guesses.
Practical references for homeowners, inspectors, technicians, adjusters, and property teams.
Where to find an HVAC serial number
A field-ready checklist for locating the rating plate on condensers, furnaces, heat pumps, air handlers, mini-splits, and packaged systems.
Read guide 5 minute guideSerial number vs. model number: what each one tells you
Learn why the serial number usually identifies manufacture date while the model number carries product family, capacity, efficiency, fuel, voltage, and revision clues.
Read guide 7 minute guideHow HVAC model numbers can reveal nominal tonnage
Understand common 012–060 capacity codes, convert BTU/h to tons, and avoid the model-number shortcuts that produce bad estimates.
Read guideBuilt for long-term trust
Sources and corrections live inside the product.
Each indexable brand guide names its rule family, source, verification date, limitations, and parent-manufacturer context.