How to Read Hayward Serial Numbers and Date Codes
Pumps, Filters, Cleaners, Heaters, Heat Pumps, some Incandescent Lighting and Accessories
Hayward's serial numbers for all products, with the exception of some cleaners, controls, heat pumps and electronic chlorinators, are 17 digits long and begin with the numbers '21'. Often these numbers appear on product labels with spaces or parentheses.
Controls, Electronic Chlorination, ColorLogic Lighting
Serial numbers for Controls, Electronic Chlorination, and ColorLogic Lighting typically follow a format like this: 1M12345-1234567 (all numbers with the exception of the letter in the second position).
For products such as Aqua Rite, the serial number can be found inside the door of the control panel.
