spa heater thermostat
The thermostat of a hot tub is the component that allows you to adjust the water temperature.
In modern spas, a temperature sensor is typically connected to a circuit board, with the topside control panel serving as a remote control.
Spas that are around 20 years old generally utilize potentiometers and solid-state probes for temperature control.
For even older spas, specifically those that are 30-40 years old, a mechanical thermostat equipped with a capillary bulb is commonly found.
Thermostat, Invensys, Short Leads, 5/16", 6", SPST, 25A
Product ID: 275-2568-01
Thermostat, Invensys, 1/4", 6", SPST, 25A, Short Leads
Product ID: 275-2568-00
Thermostat, Invensys, Hydro-Quip, 5/16", 18", SPST, 25A
Product ID: 275-3263-00
Solid State T-Stat 120VAC, 5/16"x4ft Thermister
Product ID: ets1000120040lp
Thermostat, Tecmark, Solid State, 5/16", 24", SPST, 24v,...
Product ID: ets100002402lp
Thermostat, Invensys, Patrol/Aquaset, 5/16", 48", SPDT, 25A
Product ID: 275-3317-02
Click on the spa parts picture below for more information