Hayward Thermostat with Knob for Hayward Pool Heaters | HAXTST1930 Spa Care Chemical Bundles or damaged lens on SunBrite™

or damaged lens on SunBrite™ and SunGlow™ light units

or visible water leakage at the heat exchanger

Replacing the complete set at each service interval ensures consistent clamping force and prevents actuator drift

Housing O-ring

Size: 33' Diameter

Hayward Thermostat with Knob for Hayward Pool Heaters | HAXTST1930 Spa Care Chemical Bundles or damaged lens on SunBrite™The Hayward Thermostat with Knob (HAXTST1930) is the OEM replacement thermostat assembly for Hayward pool heaters, providing direct temperature control at the unit. IMPORTANT: PROFESSIONAL SERVICE REQUIRED Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high voltage components without proper certification. What It Does The thermostat assembly regulates