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Thermostats / Sensors

Thermostats / Sensors

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    Johnson Controls T26J-7 75/90F Clglinevolt,NothermnoSwitch

    Johnson Controls

    MSRP: $230.95
    Now: $178.46
    Johnson Controls T26J-7 75/90F Clglinevolt,NothermnoSwitch  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $230.95
    Now: $178.46
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    MSRP: $230.95
    Now: $178.46
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    Johnson Controls T26A-15 120V Room Htg Stat 40/60F

    Johnson Controls

    MSRP: $233.87
    Now: $180.72
    Johnson Controls T26A-15 120V Room Htg Stat 40/60F  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $233.87
    Now: $180.72
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    MSRP: $233.87
    Now: $180.72
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    Johnson Controls T26A-14 40/75F Htg Stat,Line V.,No Switch

    Johnson Controls

    MSRP: $237.76
    Now: $183.73
    Johnson Controls T26A-14 40/75F Htg Stat,Line V.,No Switch  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $237.76
    Now: $183.73
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    MSRP: $237.76
    Now: $183.73
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    Johnson Controls T25A-16 2-Stg Line Volt Stat, 40/90F

    Johnson Controls

    MSRP: $453.73
    Now: $350.61
    Johnson Controls T25A-16 2-Stg Line Volt Stat, 40/90F  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $453.73
    Now: $350.61
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    MSRP: $453.73
    Now: $350.61
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    Johnson Controls T23B-1 50/90F Fancoil Stat,Lo-Med-Hi

    Johnson Controls

    MSRP: $458.07
    Now: $353.97
    Johnson Controls T23B-1 50/90F Fancoil Stat,Lo-Med-Hi  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $458.07
    Now: $353.97
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    MSRP: $458.07
    Now: $353.97
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    Johnson Controls T22JAA-1 Line V.Clg Stat,Off-Auto,40/90

    Johnson Controls

    MSRP: $398.84
    Now: $308.19
    Johnson Controls T22JAA-1 Line V.Clg Stat,Off-Auto,40/90  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $398.84
    Now: $308.19
    Qty in Cart: 0
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    MSRP: $398.84
    Now: $308.19
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    Johnson Controls T22BBC-1 Med.Duty Line Volt Tstat,40/90

    Johnson Controls

    MSRP: $506.48
    Now: $391.37
    Johnson Controls T22BBC-1 Med.Duty Line Volt Tstat,40/90  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $506.48
    Now: $391.37
    Qty in Cart: 0
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    MSRP: $506.48
    Now: $391.37
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    Johnson Controls T22AAA-1 40/90F Line Volt Htg T Stat

    Johnson Controls

    MSRP: $385.26
    Now: $297.70
    Johnson Controls T22AAA-1 40/90F Line Volt Htg T Stat  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $385.26
    Now: $297.70
    Qty in Cart: 0
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    MSRP: $385.26
    Now: $297.70
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    Johnson Controls T-4054-2 Ht/Clg Rm Stat Reverse Acting

    Johnson Controls

    MSRP: $499.14
    Now: $385.70
    Johnson Controls T-4054-2 Ht/Clg Rm Stat Reverse Acting  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $499.14
    Now: $385.70
    Qty in Cart: 0
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    MSRP: $499.14
    Now: $385.70
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    Johnson Controls T-4003-203 Thermostat, Ra,Horz.

    Johnson Controls

    MSRP: $408.85
    Now: $309.74
    Johnson Controls T-4003-203 Thermostat, Ra,Horz.  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $408.85
    Now: $309.74
    Qty in Cart: 0
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    MSRP: $408.85
    Now: $309.74
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    Johnson Controls T-4002-9012 Vert.Da Tstat, Centigrade

    Johnson Controls

    MSRP: $299.90
    Now: $231.74
    Johnson Controls T-4002-9012 Vert.Da Tstat, Centigrade  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $299.90
    Now: $231.74
    Qty in Cart: 0
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    MSRP: $299.90
    Now: $231.74
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    Johnson Controls SET29A-629R Replacement Sensing Element

    Johnson Controls

    MSRP: $678.25
    Now: $524.10
    Johnson Controls SET29A-629R Replacement Sensing Element Item considered HAZARDOUS by UPS and will ship USPS Priority FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No...
    MSRP: $678.25
    Now: $524.10
    Qty in Cart: 0
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    MSRP: $678.25
    Now: $524.10
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    Johnson Controls SEN-600-1 Remote Indoor Sensor (T600)

    Johnson Controls

    MSRP: $135.27
    Now: $104.52
    Johnson Controls SEN-600-1 Remote Indoor Sensor (T600)  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $135.27
    Now: $104.52
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    MSRP: $135.27
    Now: $104.52
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    Johnson Controls RLD-H10-601R Replacement Sensor

    Johnson Controls

    MSRP: $296.64
    Now: $224.73
    Johnson Controls RLD-H10-601R Replacement Sensor  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $296.64
    Now: $224.73
    Qty in Cart: 0
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    MSRP: $296.64
    Now: $224.73
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    Johnson Controls A99BB-25 Silicon Sensor 9.75"Pvc -40-212F

    Johnson Controls

    MSRP: $53.92
    Now: $41.67
    Johnson Controls A99BB-25 Temperature Sensor PTC Silicon Sensor with PVC Cable 9 3/4" Cable Length -40/212 Degree Temeprature Range FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts...
    MSRP: $53.92
    Now: $41.67
    Qty in Cart: 0
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    MSRP: $53.92
    Now: $41.67
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    York Controls S1-THEC11NY 1H/1C Non-Programmable Thermostat

    York

    MSRP: $103.04
    Now: $78.06
    York Controls S1-THEC11NY 1H/1C Non-Programmable Thermostat  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $103.04
    Now: $78.06
    Qty in Cart: 0
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    MSRP: $103.04
    Now: $78.06
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    York Controls S1-7975-388P/A Flame Sensor

    York

    MSRP: $189.92
    Now: $146.75
    York Controls S1-7975-388P/A Flame Sensor   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements    
    MSRP: $189.92
    Now: $146.75
    Qty in Cart: 0
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    MSRP: $189.92
    Now: $146.75
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    York Controls S1-2845-3111 Flame Sensor

    York

    MSRP: $61.50
    Now: $47.52
    York Controls S1-2845-3111 Flame Sensor  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $61.50
    Now: $47.52
    Qty in Cart: 0
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    MSRP: $61.50
    Now: $47.52
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    York Controls S1-031-09199-000 Thermistor Sensor, 10K

    York

    MSRP: $197.98
    Now: $152.99
    York Controls S1-031-09199-000 Thermistor Sensor, 10K  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $197.98
    Now: $152.99
    Qty in Cart: 0
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    MSRP: $197.98
    Now: $152.99
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    York Controls S1-031-09135-000 Pressure Sensor

    York

    MSRP: $1,110.63
    Now: $858.22
    York Controls S1-031-09135-000 Pressure Sensor   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements    
    MSRP: $1,110.63
    Now: $858.22
    Qty in Cart: 0
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    MSRP: $1,110.63
    Now: $858.22
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Adding your products to cart

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.