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Thermostats / Sensors

Thermostats / Sensors

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    Rheem SP12049D Gas Pilot/24" Ignition Sensor

    Rheem-Ruud

    MSRP: $110.19
    Now: $85.14
    Rheem SP12049D Gas Pilot/24" Ignition Sensor  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $110.19
    Now: $85.14
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    Rheem SP12015 Thermostat & M/R Hi-Limit Kit

    Rheem-Ruud

    MSRP: $618.92
    Now: $478.25
    Rheem SP12015 Thermostat & M/R Hi-Limit Kit  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $618.92
    Now: $478.25
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    Rheem SP11798B (Replaces AP11798B-1) Thermostat & High Limit

    Rheem-Ruud

    MSRP: $597.78
    Now: $461.92
    Rheem SP11798B (Replaces AP11798B-1) Thermostat & High Limit This is the Direct Replacement for AP11798B-1  FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered...
    MSRP: $597.78
    Now: $461.92
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    Rheem SP11700 120V Thermostat Kit

    Rheem-Ruud

    MSRP: $30.18
    Now: $23.32
    Rheem SP11700 120V Thermostat Kit  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $30.18
    Now: $23.32
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    Rheem SP11695 Lower Thermostat

    Rheem-Ruud

    MSRP: $17.74
    Now: $13.71
    Rheem SP11695 Lower Thermostat   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements   Cross References  
    MSRP: $17.74
    Now: $13.71
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    Rheem 47-21777-04 Defrost Sensor L50-22F

    Rheem-Ruud

    MSRP: $76.03
    Now: $58.75
    Rheem 47-21777-04 Defrost Sensor L50-22F  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $76.03
    Now: $58.75
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    Honeywell 14001496-001 Adptr Plate Sensor Mt.On 2X4 Box

    Honeywell

    MSRP: $41.88
    Now: $32.36
    Honeywell 14001496-001 Adptr Plate Sensor Mt.On 2X4 Box  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $41.88
    Now: $32.36
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    Honeywell T104C1036 Remote Setpt/Sensor,2 Caps 4Ft

    Resideo

    MSRP: $262.33
    Now: $202.71
    Honeywell T104C1036 Remote Setpt/Sensor,2 Caps 4Ft  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $262.33
    Now: $202.71
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    Honeywell T104B1046 Remote Setpt/Sensor 16' Cap

    Resideo

    MSRP: $223.76
    Now: $172.90
    Honeywell T104B1046 Remote Setpt/Sensor 16' Cap  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $223.76
    Now: $172.90
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    Honeywell T100F1395 Direct Mt Set Pt,Remote Sensor

    Resideo

    MSRP: $85.24
    Now: $65.87
    Honeywell T100F1395 Direct Mt Set Pt,Remote Sensor  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $85.24
    Now: $65.87
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    Honeywell T100C1026 Remote Set Pt/Sensor W/Dbl Cap

    Resideo

    MSRP: $238.71
    Now: $184.45
    Honeywell T100C1026 Remote Set Pt/Sensor W/Dbl Cap  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $238.71
    Now: $184.45
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    Honeywell T100B1043 Remote Set Pt/Sensor 16'Cap

    Resideo

    MSRP: $194.62
    Now: $150.39
    Honeywell T100B1043 Remote Set Pt/Sensor 16'Cap  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $194.62
    Now: $150.39
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    Johnson Controls TE-68NT-0N00S 1K Nickel Sensor,White Term Block

    Johnson Controls

    MSRP: $101.29
    Now: $78.27
    Johnson Controls TE-68NT-0N00S 1K Nickel Sensor,White Term Block  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $101.29
    Now: $78.27
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    Johnson Controls TE-68NP-1N00S 1K Nickel Sensor W/Modjck/Warm/Cool

    Johnson Controls

    MSRP: $107.32
    Now: $82.93
    Johnson Controls TE-68NP-1N00S 1K Nickel Sensor W/Modjck/Warm/Cool   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements    
    MSRP: $107.32
    Now: $82.93
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    Johnson Controls TE-637DP-1 Surface Mount Temperature Sensor 2.2K

    Johnson Controls

    MSRP: $51.84
    Now: $39.28
    Johnson Controls TE-637DP-1 Surface Mount Temperature Sensor 2.2K  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $51.84
    Now: $39.28
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    Johnson Controls TE-636S-1 10K Ohm Thermistor Type ii Sensr

    Johnson Controls

    MSRP: $35.97
    Now: $27.80
    Johnson Controls TE-636S-1 10K Ohm Thermistor Type ii Sensr  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $35.97
    Now: $27.80
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    Johnson Controls TE-636GV-2 10K Duct Probe Temperature Sensor

    Johnson Controls

    MSRP: $42.52
    Now: $32.86
    Johnson Controls TE-636GV-2 10K Duct Probe Temperature Sensor  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $42.52
    Now: $32.86
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    Johnson Controls TE-636GM-1 4"Ductmnt 10Kohm Temperature Sensor

    Johnson Controls

    MSRP: $37.88
    Now: $29.27
    Johnson Controls TE-636GM-1 4"Ductmnt 10Kohm Temperature Sensor  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $37.88
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    Johnson Controls TE-636AM-2 Well Temperature Sensor

    Johnson Controls

    MSRP: $44.95
    Now: $34.73
    Johnson Controls TE-636AM-2 Well Temperature Sensor  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $44.95
    Now: $34.73
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    Johnson Controls TE-636AM-1 10Kohm Thermistor Sensor Well Mt

    Johnson Controls

    MSRP: $55.36
    Now: $42.78
    Johnson Controls TE-636AM-1 10Kohm Thermistor Sensor Well Mt  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $55.36
    Now: $42.78
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Thermostats and Sensors for HVAC Systems 

HVAC thermostats and furnace sensors are essential for regulating system performance, energy efficiency, and safety. These components monitor conditions such as temperature, pressure, and flame status, ensuring furnaces, air conditioners, and heat pumps operate correctly. Furnace Part Source offers a wide range of OEM furnace sensors and thermostats for both residential and commercial applications. 

Types of HVAC Thermostats 

  • Non-Programmable Thermostats – Manual models that maintain a set temperature until adjusted.
  • Programmable Thermostats – Digital controls with scheduling features to reduce energy usage during off
  • Smart Thermostats – Wi-Fi connected, app-enabled devices with advanced features like occupancy detection and zoning compatibility. 

Compatibility and Replacement 

Selecting the correct OEM thermostat or sensor ensures accurate readings and reliable operation. Always verify part numbers, voltage requirements, and system configuration (single-stage, multi-stage, or heat pump) before replacing components. 

Maintenance and Upgrades 

Faulty sensors can cause misreadings, wasted energy, or system shutdowns. Replacing worn parts or upgrading to energy-efficient thermostats restores system reliability, reduces utility costs, and extends equipment life. 

Wide Selection from Furnace Part Source 

With access to over 500,000 parts from 300+ manufacturers, Furnace Part Source provides the right solution for any repair or upgrade. From thermistors to programmable thermostats, our catalog includes components designed for both residential and commercial HVAC systems. 

Frequently Asked Questions 

What types of thermostats are available for HVAC systems? 

Options include non-programmable, programmable, and smart thermostats, each offering different levels of control and energy efficiency. 

How do I know if my furnace sensor needs replacement?

Signs include frequent system shutdowns, inaccurate temperature readings, or ignition failures.  

Why should I use OEM furnace sensors? 

OEM parts ensure proper fit, compatibility, and performance, reducing the risk of system malfunctions.

What is the difference between a thermocouple and a flame sensor? 

Thermocouples generate voltage to detect a pilot flame, while modern flame sensors use electronic signals to confirm burner ignition. 

Can upgrading to a smart thermostat improve efficiency?

Yes. Smart thermostats allow remote control, scheduling, and advanced optimization, often reducing energy costs.