Ducane HVAC Age Lookup by Serial Number
Decode your Ducane serial number to find the manufacturing date, system age, and maintenance recommendations. Free and instant. No account needed.
Finding Your Ducane Serial Number
Check these four spots on your HVAC system
Common Locations
What to Look For
- White or metallic manufacturer sticker
- Labeled "Serial No." or "S/N"
- Typically 8–12 characters long
- Usually near the model number
Can't find it? Try the electrical access panel on the front of the outdoor unit or inside the air handler cabinet.
Serial Number Examples
Don't worry if yours looks different — each brand has multiple formats and our system can decode most variations.
About Ducane HVAC Systems
Ducane is a Lennox brand built at the Allied Products facility in West Columbia, South Carolina. Lennox uses the West Columbia plant for several of its brands, including Concord and Ducane. Ducane was positioned as a mid-price residential brand distributed through independent dealers. The serial number format has two styles. The older format encodes the year and week in the last four digits, while a newer style uses a month letter code. Both are handled by this decoder.
Supported Brands
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