How old is my Ducane equipment?
Enter the serial number from the label. The date comes from Ducane's documented serial rules, not a guess.
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By equipment type
Ducane furnace age
Typical life: 15–20 years
Ducane air conditioner age
Typical life: 10–15 years
Ducane heat pump age
Typical life: 10–15 years
Questions
- How do I find the age of my Ducane equipment?
- Enter the serial number from the rating plate above. Ducane uses the Lennox family serial format, which includes the manufacture date.
Same serial format
Sources
- Lennox model and serial nomenclature (archived 2010)
- Allied Air warranty procedures WP20565203 Rev 10 (2015): serial number formats
- Building-Intelligence Center: Lennox HVAC age
- Electrical-Forensics: Air conditioner date codes
Rules last reviewed 2026-09-28. These rules are in Beta while we verify more real-world examples, so results are capped at medium confidence.
Manufacture dates are decoded from manufacturer serial-number conventions and available documentation. Serial formats can change. Verify critical equipment information with the manufacturer when necessary.