How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
site-built, mobile/manufactured and modular homes
How do I tell the age of a Grandaire air conditioner or furnace from the serial number?
Wednesday, July 18, 2018
The fourth and fifth digits of the serial number are the year of manufacture. The data plate shown below, with the serial number GS3001002827, indicates that the unit was manufactured in 2000.
To find out the age of another brand of air conditioner or heat pump, go to How do I determine the age of my air conditioner? Also, see our blog posts How many tons is my Grandaire air conditioner or heat pump?
And to figure out what all the other numbers listed on the condenser data plate mean, go to our blog post How do I understand the air conditioner or heat pump condenser label (data plate)?
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Field Guide for Home Inspectors, a quick reference for finding the age of 154 brands of HVAC systems, water heaters, and electrical panels, plus 210 code standards for site-built and manufactured homes, and the life expectancy rating of 195 home components. Available at amazon.com for $19.95.
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To learn more about heating and air conditioning systems, see these other blog posts:
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