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How do I determine the age of a Hayward pool heater from the serial number?
Tuesday, February 23, 2021
The 5th and 6th digits of the serial number of a Hayward heat pump pool heater are the year of manufacture, and the next two are the month. So the example shown below was produced in August, 2017. This serial number system has been in effect since May, 2010.
For models manufactured from 2005 to mid-2010, a typical serial number looked like this: (21) 120-510-000048965. The 6th digit is the year of manufacture, and the 7th and 8th are the month, which translates to October, 2005.
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Here’s links to a collection of our blog posts about POOL AND SPA:
• Does an above-ground pool require a building permit?
• Does an above-ground pool have to comply with code requirements for a swimming pool barrier?
• What are the pros and cons of vinyl liner vs fiberglas vs concrete in-ground pools?
• Can a pool with green, cloudy water be inspected?
• Should I refinish-resurface my pool with paint or plaster?
• Why are pool pumps now required to be variable speed?
Visit our POOL AND SPA 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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