Very professional and friendly!On 02/10/2025 by B. B. (verified customer)
A thermistor is a semiconductor that changes resistance with temperature changes (as the temperature goes up, the resistance goes down). Tstats and High-limits can be found on older spas and have the same functionality as the Hi-limit/Control Thermistors.
Showing 1–30 of 55 results
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Replaces the obsolete 39525 and obsolete 39204 Newly designed and includes o-ring This high-limit thermistor sensor is a safety device designed to communicate with the system to shut down the heater if the water temperature exiting your heater exceeds 118 ...read more -
Sku: 79006Thermistor, Control Thermostat, Watkins No Fault Heater, Hot Spring, Tiger River and Limelight
Replaces the obsolete 39530 and obsolete 39205 Newly designed and includes o-ring This control thermistor is a safety device that measures the water temperature of your spa and communicates that temperature reading to the Motherboard It simply screws ...read more -
Replaces 38415 Newly designed and includes o-ring This control thermostat thermistor sensor detects the spa waters temperature and relays that information back to the system It simply screws into the No Fault Heater Housing (hand tight only) and plugs ...read more -
Replaces 38416 Newly designed and includes o-ring This high-limit thermistor sensor is a safety device designed to communicate with the system to shut down the heater if the water temperature exiting your heater exceeds 118 degrees F It simply screws ...read more -
This newly designed high limit thermistor replaces the original black plastic-tipped version It is a safety device that will shut down power to the spa if the water temperature exiting the heater is too hot This would indicate a "low water flow" condition ...read more -
This Control Thermostat Thermistor communicates the actual water temperature to the controller (control box motherboard) to shut off the heater when the spa reaches the target temperature It is used on all 73859, 72469, 76840 and 76091 control boxes -
Sku: 34-01395-KThermistor, Control & Hi-Limit Sensor Kit, After Market
The after-market thermistor kit (1 control and 1 hi-limit sensor included with o-rings as well as adapters) that fit with either the 4kW or 6kW after-market PDR Titanium double-barrel heater These sensors can plug in directly to the motherboard located ...read more -
Sku: 30-01395-KThermistor Adapters, After-Market
The after-market thermistor adapters work to allow the after-market thermistors to connect to the outside of the control box instead of connecting directly to the motherboard of the control box -
Sku: 34878O-Ring, Control Thermistor
Control Thermostat Thermistor o-ring for the 79006 and 78970 thermistors This o-ring is located on the "inlet" side of the heater and is the larger of the two thermistor o-rings For the outlet side of the heater see the part# 34879 o-ring -
Sku: 34879O-Ring, Hi-Limit Thermistor
High-Limit Thermistor o-ring for the 79005 and 78969 thermistors This o-ring is located on the "outlet" side of the heater and is the smaller of the two thermistor o-rings For the "inlet" side of the heater see part 34878 -
This control thermostat was mounted in the control box directly behind the temperature dial on all Hot Spring models from 1989-1993 It was mounted on the under the top-side control panel on all Tiger River models from 1992-1994 -
Sku: 30208Hi-Limit, Spa, 120 Degree, Hot Spring
This Spa Hi-Limit thermostat (aka spa reset or tub reset) is a safety device designed to prevent damage to the spa that would occur if the spa overheated The probe of this high-limit resides in a "drywell" along with the thermostat probe The spa high-limit ...read more -
Sku: 30203Thermostat, Control, Hot Spring
This Control Thermostat is the replacement for all Hot Spring manufactured from 1986-1988 Notes: The numbers on the control panel temperature dial do not correspond to any specific temperature They are a convenient way to mark where a person likes the ...read more -
This is the replacement thermistor for the 1999-2002 Hot Spot RE, RLX, SE, SLX, and the 2001-2002 SLXtra (wood-sided) spa models Also the Solana 2000-2002 X, 2003-2005 RX, SX, and TX models This thermistor communicates the actual water temperature to the ...read more -
This is the after-market replacement thermistor for the 1999-2002 Hot Spot RE, RLX, SE, SLX, and the 2001-2002 SLXtra (wood-sided) spa models Also the Solana 2000-2002 X, 2003-2005 RX, SX, and TX models This thermistor communicates the actual water ...read more -
This sensor fitting is installed through the side spa shell at the base of the hot tub near the suction and drain fittings on Hot Spot models beginning in 2020 Its purpose is to provide a watertight seal around the 72493 temperature control thermistor bulb -
Sku: 76112Thermistor Sensor Fitting, Hot Spot
This sensor fitting is installed through the side of the filter housing in all 1998-2005 Hot Spot brand spas Its purpose is to provide a watertight seal around the 71578 thermistor bulb -
Sku: 33249Thermostat, Control, Hot Spot
This Control Thermostat is the replacement for the 1993-1994 Hot Spot Z (round spa) spa model -
Sku: 37727Thermosensor Fitting, Solana
This thermo-sensor fitting is used to waterproof the temperature sensor (thermistor) that is located in the filter compartment of all Solana TX, RX and SX models -
Sku: 34806Hi-Limit, Spa, Hot Spot
This Spa High-Limit ( red spa reset or tub reset button) is a safety device designed to shut off all power to the spa should the water temperature reach 120 degrees (plus or minus 4 degrees F) This will prevent damage to the spa or injury to bathers from ...read more -
Sku: 33248Hi-Limit, Spa, Tiger River and Hot Spot
This Spa Hi-Limit thermostat (red spa reset or tub reset button) is the factory replacement for the 1992-1994 Tiger River Khyber, Manora, and Tondi Also for the 1993-1994 Hot Spot Z model Notes: The Spa Hi-Limit is a safety device designed to shut off ...read more -
Sku: 30118Cordgrip, Thermostat
This cord grip fitting is what seals around the 30203 and the 75077 control thermostats copper wire May require the 30690 adapter (not included) -
This Control Thermostat includes a Heater Contactor and is the replacement for the Hot Spring Classic model D spa prior to 1986 This kit is needed when replacing the thermostat (30203 ) due to the newer made thermostat's inability to handle the required ...read more -
Used on the 1995-1997 Hot Spot spas this fitting provided a flange for the cartridge-style heater element to seal against and a "dry-well" for the thermistor probe to slide into -
This Heater High-Limit (red heater reset button) is the replacement for the Hot Spring Classic (Model D) -
This wiring harness connects the electronic thermostat to the PWA Board on the backside of the 1995-1996 Tiger River Control Panel If there is a communication problem with this wiring harness there will be erratic heating issues in a 1995-1996 Tiger River ...read more -
Sku: 70106Thermowell, Hot Spring
This thermowell (dry well) houses the spa high limit capillary (probe) and the thermostat probe in the 1989-1990 Hot Spring Sovereign (a k a Indoor/Outdoor model), 1989-1990 Prodigy (aka Home Spa) and the 1989-1994 Jetsetter -
Sku: 71280Thermowell, Hot Spot Square
Thermowell houses the temperature sensor for Hot Spot Square -
Sku: 70899Thermowell Assembly
Thermowell houses the thermistor probe on a 1995-1997 Hot Spot spa models -
This wiring harness is used to connect the thermostat to the circuit board on the topside control panel on Tiger River spas made between 1992 and 1994
Showing 1–30 of 55 results