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 controller to shut off the heater when the spa reaches target temperature. Click the "More Info" button for details.

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 into the side of the spas control box. This item is found on the 1995-2000 Hot Spring Classic, 1995-2002 Hot Spring Grandee, Jetsetter, Landmark, Prodigy and Sovereign. It was also used on the 1995-1996 Highlife, 2002 Sovereign ILE (Special Edition) and 2000-2002 Hot Spring Vanguard. This thermistor also found on the Tiger River 1995-1996 Khyber, Manora and Tondi and the 1997-2002 Siberian, Bengal and Sumatran spas. Click the "More Info" button for details.

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 then plugs directly onto the IQ 2020 control box motherboard. It's found on the Hot Spring 2005-2006 Accolade, 2004-current Vista and Envoy, 2002-current Grandee, Jetsetter, Prodigy, Sovereign and Vanguard. Also on the Hot Spring 2003 Highlife, 2002-2003 Landmark and 2002 Sovereign ILE (limited edition) and the 2006-current Aria. This thermistor can also be found on the Tiger River 2002-current Bengal and Sumatran, 2002-2004 Siberian and 2003-current Caspian spa models. Click the "More Info" button for details.

This is the replacement thermistor for all 1994 Hot Spring spa models and 1995-1998 Hot Spot RE, RLX, SE & SLX spa models.

This Control Thermostat Thermistor communicates the actual water temperature to the controller to shut off the heater when the spa reaches target temperature. It is used on all 2006-current Hot Spot Mallorca, Sorrento, Trinidad & Tobago spa models. It is also used on all 2006-current Solana RX, SX & TX spa models.

The hi-limit thermistor (aka thermister) is a safety device to shut down power to the heater in a "low water flow" or no water flow" condition. It is used on the Caldera Oasis.

This High Limit Thermistor is a safety device that will shut down the heater if the water temperature exiting the heater is too hot. This would indicate a "low water flow" condition. It is used on all 2006-current Hot Spot Mallorca, Sorrento, Trinidad & Tobago spa models. It is also used on all 2006-current Solana RX, SX & TX spa models.

The 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 into the No Fault Heater Housing (hand tight only) and then plugs into the side of the spas control box. It's found on the 1995-2000 Hot Spring Classic, 1995-2002 Hot Spring Grandee, Jetsetter, Landmark, Prodigy and Sovereign. It is also on the 1995-1996 Highlife, 2002 Sovereign ILE (Special Edition) and 2000-2002 Hot Spring Vanguard. This thermistor is also found on the Tiger River 1995-1996 Khyber, Manora and Tondi as well as the 1997-2002 Siberian, Bengal and Sumatran models. Click the "More Info" button for details.

The 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 into the No Fault Heater Housing (hand tight only) and then plugs directly onto the IQ 2020 control box motherboard. Found on the Hot Spring 2005-2006 Accolade, 2004-current Vista and Envoy, 2002-current Grandee, Jetsetter, Prodigy, Sovereign and Vanguard. Also found on the Hot Spring 2003 Highlife, 2002-2003 Landmark, 2002 Sovereign ILE (limited edition) and the 2006-current Aria. This thermistor is also on the Tiger River 2002-current Bengal and Sumatran, 2002-2004 Siberian and 2003-current Caspian spa models. Click the "More Info" button for details.