Goodman is the value brand of Daikin and one of the most common furnace and AC names in the country. Its serial is the simplest in the business: the first two digits are the year and the next two are the month. Amana heating equipment made since 1997 and Daikin-branded unitary equipment since 2012 use the same rule.
The first two digits are the year and the next two are the month. The rest is a production number.
9704011000 reads as April 1997.
Two sources agree Building Intelligence Center, PickHVAC, HVACbase, Waypoint Property Inspection, McGarry and Madsen Home Inspection
An air-source heat pump usually lasts 10 to 15 years. It runs in both seasons, so it logs more hours than a furnace or an AC alone.
How long does a heat pump last? · Should I replace my furnace? · Trane, Lennox, Bryant, InterNACHI
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The age you just looked up is the kind of fact that gets lost. A written record of serial numbers, install dates, repairs and who did the work saves the next owner, inspector or insurer from guessing.
A lifetime logbook for the house, organized by system, with room for serial numbers, install dates, repairs and contractors. It stays with the house for the next owner.
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