Hayward H-Series Bulb Well After 6/1/01 (HAXTBW1930) pallighting 10" round grate

10" round grate

When the existing cartridge has reached the end of its service life

A filter cartridge is useful because it helps remove suspended debris from circulating water

A properly selected cartridge pack helps restore intended filtration support and contributes to a cleaner maintenance cycle

Supports reliable control communication across long distances

Hayward H-Series Bulb Well After 6/1/01 (HAXTBW1930) pallighting 10" round grateDesigned for Hayward H Series heaters built after June 1, 2001, this bulb well provides the protective pocket needed for proper sensing component placement inside the heater assembly. It helps shield the sensing bulb from direct exposure while still allowing accurate temperature response, making it an important part when restoring dependable heater operation. A worn, damaged, or corroded bulb well can affect serviceability and should be replaced with