Hayward H-Series Thermostat Kit w/Knob (HAXTST1930) cfrfilters Waterco HydroStar trap lid

Waterco HydroStar trap lid

Supports proper VS-series platform matching

The 30 PSI rating and slip-by-slip configuration make it a practical fit for supported line layouts that need dependable valve control

Supports cleaner installation and reliable heat restoration

this parts bag helps support more organized ozone maintenance and contributes to better repair completeness overall

Hayward H-Series Thermostat Kit w/Knob (HAXTST1930) cfrfilters Waterco HydroStar trap lidTemperature control is central to heater comfort and reliable pool or spa operation. This Hayward H Series thermostat kit with knob replaces worn or failing thermostat components on compatible heater models, helping users adjust and maintain the desired water temperature more confidently. Aging thermostats can lead to inconsistent heating, poor response, or difficulty setting the heater where it needs to be. Installing a proper replacement helps