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Add to Cart The item has been added -
Add to Cart The item has been addedThermostat, Invensys, 5/16", 48", SPST, 25A
MSRP: $64.43$50.97 -
Add to Cart The item has been addedSensor Assy, Sundance, 800, Temp, Hi Limit, w/o O-Ring
MSRP: $122.94$95.97 -
Add to Cart The item has been addedPressure Switch 3903-DF, 1A, Tecmark, 1/8"mpt, SPST, Field Adjustable
MSRP: $46.99$37.97 -
Add to Cart The item has been addedThermostat, Invensys, 5/16", 12", SPST, 25A
MSRP: $57.03$44.97 -
Add to Cart The item has been addedSensor, Temperature, Jacuzzi J-Series, Sundance, Curled Finger Style
MSRP: $99.99$90.97 -
Add to Cart The item has been addedPressure Switch 3035, 25A, Tecmark, 1/8"mpt, SPNO, 1-100 PSI
MSRP: $65.99$55.97 -
Add to Cart The item has been addedHi-Limit, 1/4" dia, 36"Capillary, SPST, Screw Terminal, 25A
MSRP: $65.60$51.97 -
Add to Cart The item has been addedPressure Switch 3925,25A, Tecmark, Universal, SPNO, w/Brass
MSRP: $46.37$36.97 -
Add to Cart The item has been addedPressure Switch, PresAirTrol Tinytrol,21A,1/8"mpt,SPDT,2psi
MSRP: $66.99$47.97 -
Add to Cart The item has been addedPressure Switch 1/8" mpt 1 Amp Hot Tub Spa Part Universal How To Video
MSRP: $43.99$30.97 -
Add to Cart The item has been addedPressure Switch 3015, 25A, Tecmark, 1/8"mpt, SPDT
MSRP: $62.74$48.97
Heater Sensors & Thermals
Heater sensors and thermal components are essential safety and control parts that regulate spa water temperature and prevent dangerous overheating. This category includes temperature sensors, high limit sensors, pressure switches, flow switches, mechanical hi-limit switches, and thermostats. When one of these components fails, your hot tub may stop heating, display error codes, or shut down unexpectedly. Spa Guy Parts stocks a comprehensive range of heater sensors and thermal parts for most major spa brands. Free shipping over $75.