Hayward CZ/HM2 Thermostat Knob Black (CHXTSK1930) champlain Improves installation confidence and long-term

Improves installation confidence and long-term serviceability

Choosing a complete assembly can simplify installation planning and provide a more coordinated replacement than sourcing multiple individual parts

Supports cleaner and more dependable water circulation

This model is especially useful when the original seal has failed under demanding use or when the buyer wants a more premium seal material for the rebuild

Useful for inlet and outlet fitting repairs

Hayward CZ/HM2 Thermostat Knob Black (CHXTSK1930) champlain Improves installation confidence and long-termThis black thermostat knob is a replacement control part for compatible Hayward CZ and HM2 heater models. A damaged or missing knob can make temperature adjustment difficult and leave the heater controls looking incomplete. Replacing the knob restores easier manual adjustment and a cleaner control panel appearance. It is a straightforward heater service part for maintaining usability on older compatible systems. Black thermostat knob for compatible CZ