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 find the age of a Haier heat pump or air conditioner from the serial number?
Monday, March 28, 2022
Many Haier units have an 8-digit serial number, with the first two digits being the year of manufacture, and 3rd and 4th digits the month. So the data plate shown above indicates the Haier room air conditioner was produced in February, 2007. Haier publishes charts for the longer serial numbers, with up to 20 digits of both numbers and letters, at https://www.haierappliances.com/support/support-content/35198, but several units we have examined have serial numbers that do not conform to their published data formats.
For the age of another brand or manufacturer, go to our blog post How do I determine the age of my air conditioner? 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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To learn more about heating and air conditioning systems, see these other blog posts:
• My air conditioner won't turn on. What's wrong?
• Where is the air filter for my central air conditioner and furnace? I can’t find it?
• Does an old air conditioner use more electricity as it ages?
• How did homes stay cool in Florida before air conditioning?
• What is wrong with an air conditioner when the air flow out of the vents is low?
• Why has the thermostat screen gone blank?
• Why does it take so long to cool a house when an air conditioner has been off for a while?
• Why is my air conditioner not cooling enough?
• What are the most common problems with wall/window air conditioners?
• Will closing doors reduce my heating and cooling costs?
Visit our HEATING AND AIR CONDITIONING page for other related blog posts on this subject, or go to the INDEX for a complete listing of all our articles.
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