T-15 Cell Types
The Hayward T-Cell-15 and Hayward T-Cell-15-SWP are the same thing.
The T-Cell-15 has a 3 year warranty.
The Hayward T-Cell-15-SWP is a Swimpure branded cell, which has a 2 or 3 year warranty. You would need to verify with the seller to be sure.
The first number of the serial number is the length of warranty.
The TCELL940 is a T-15 "long life" cell with a 4 year warranty.
A T-15-W is a warranty replacement cell with a 1 year warranty. It's not designated as a retail cell. It's supposed to be used as a replacement for a cell that fails under warranty. Some places sell warranty cells as regular cells.
