Hayward's serial numbers for most products, with the exception of controls and chlorinators, are 17 digits long and begin with the numbers '21'.  Often these numbers appear on product labels with spaces or parentheses.  However, they should...

Pumps often have multiple tags on them so finding the right model/serial number combination can be confusing. You want to locate the label on the main pump housing.  The 17 digit number beginning with 21 is your serial number. This sometimes appears...

If you are certain that you have the correct model and serial number for your product, and the registration form still says the information is invalid, go to our Contact Us form.  Fill in...

Many people try to register their filter using the serial number from their valve. The valve either sits on top of the filter, or connects to the side, depending on the type of filter. To register your filter, you need the serial number that appears...

Normally, when people have issues with the purchase date on warranty registrations, it is because the date & time are not set correctly on their PC. To check this setting on a Windows PC, go to the Control Panel and select the Date and Time option...