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Thermostats / Sensors

Thermostats / Sensors

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    Trane SEN1287 6" Therm Duct/Imm Temp Sensor

    Trane

    MSRP: $199.85
    Now: $154.43
    Trane SEN1287 Therm Duct/Imm Temp Sensor  6"  FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above
    MSRP: $199.85
    Now: $154.43
    Qty in Cart: 0
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    MSRP: $199.85
    Now: $154.43
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    Mitsubishi Electric R01E14208 High Pressure Sensor

    Mitsubishi Electric

    MSRP: $159.74
    Now: $123.43
    Mitsubishi Electric R01E14208 High Pressure Sensor FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above
    MSRP: $159.74
    Now: $123.43
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    MSRP: $159.74
    Now: $123.43
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    Mitsubishi Electric SS610E Drain Pan Water Level Sensor

    Mitsubishi Electric

    MSRP: $204.62
    Now: $158.11
    Mitsubishi Electric SS610E Drain Pan Water Level Sensor FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above
    MSRP: $204.62
    Now: $158.11
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    MSRP: $204.62
    Now: $158.11
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    Lennox 22V24 Smart Stat S40 WIFI 3HT/2CL

    Lennox

    MSRP: $1,054.15
    Now: $814.57
    Lennox 22V24 Smart Stat S40 WIFI 3HT/2CL FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above
    MSRP: $1,054.15
    Now: $814.57
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    MSRP: $1,054.15
    Now: $814.57
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    Mamac Systems TE-702-C-7-A Duct Temperature Sensor with 10,000 Ohm NTC Thermistor (Type III) Sensor

    Mamac

    MSRP: $34.90
    Now: $26.44
    Mamac Systems TE-702-C-7-A Duct Temperature Sensor with 10,000 Ohm NTC Thermistor (Type III) Sensor 4" Probe Length NEMA 4 Painted Steel Enclosure FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts...
    MSRP: $34.90
    Now: $26.44
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    MSRP: $34.90
    Now: $26.44
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    Burnham Boiler 108703-01 Sensor 10K OHM

    Burnham Boiler

    MSRP: $154.23
    Now: $119.17
    Burnham Boiler 108703-01 Sensor 10K OHM FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above
    MSRP: $154.23
    Now: $119.17
    Qty in Cart: 0
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    MSRP: $154.23
    Now: $119.17
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    Honeywell H7726A2020 Wall Humidity Sensor RH W/1097 TEMP

    Honeywell

    MSRP: $554.32
    Now: $428.34
    Honeywell H7726A2020 Wall Humidity Sensor RH W/1097 TEMP FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above
    MSRP: $554.32
    Now: $428.34
    Qty in Cart: 0
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    MSRP: $554.32
    Now: $428.34
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    International Comfort Products 11201007000039 Room Temperature Sensor

    International Comfort Products

    MSRP: $3.09
    Now: $2.38
    International Comfort Products 11201007000039 Room Temperature Sensor FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted...
    MSRP: $3.09
    Now: $2.38
    Qty in Cart: 0
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    MSRP: $3.09
    Now: $2.38
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    Marvair 50123 Thermostat 1Ht/1Cl

    Marvair

    MSRP: $376.30
    Now: $285.08
    Marvair 50123 Thermostat 1Ht/1Cl FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above
    MSRP: $376.30
    Now: $285.08
    Qty in Cart: 0
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    MSRP: $376.30
    Now: $285.08
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    Marvair 70646 Inside Low Ambient Temp Sensor

    Marvair

    MSRP: $62.39
    Now: $48.21
    Marvair 70646 Inside Low Ambient Temp Sensor FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above
    MSRP: $62.39
    Now: $48.21
    Qty in Cart: 0
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    MSRP: $62.39
    Now: $48.21
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    Johnson Controls NSB8BHN040-0 TEMP/HUM WHITE SENSOR w/LOGO

    Johnson Controls

    MSRP: $412.55
    Now: $318.79
    Johnson Controls NSB8BHN040-0 TEMP/HUM WHITE SENSOR w/LOGO FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above
    MSRP: $412.55
    Now: $318.79
    Qty in Cart: 0
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    MSRP: $412.55
    Now: $318.79
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    York 025-53146-000 (replaces 025-52740-000) THERM PROBE (ENTER/LEAVING)

    York

    MSRP: $225.97
    Now: $174.61
    York 025-53146-000 THERM PROBE (ENTER/LEAVING) This is the direct replacement for 025-52740-000 If out of stock, call or text 1.866.620.8417 for possible cross reference. FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock...
    MSRP: $225.97
    Now: $174.61
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    MSRP: $225.97
    Now: $174.61
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    York 025-40273-002 Entering H2O Temp Sensor

    York

    MSRP: $204.42
    Now: $157.96
    York 025-40273-002 Entering H2O Temp Sensor FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above
    MSRP: $204.42
    Now: $157.96
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    MSRP: $204.42
    Now: $157.96
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    York 025-40273-007 Leaving H2O Sensor 3000Ohm

    York

    MSRP: $251.43
    Now: $194.28
    York 025-40273-007 Leaving H2O Sensor 3000Ohm FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above
    MSRP: $251.43
    Now: $194.28
    Qty in Cart: 0
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    MSRP: $251.43
    Now: $194.28
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    Aprilaire S86WMUPR (Replaces 8620W) THERMOSTAT

    Aprilaire

    MSRP: $227.34
    Now: $175.67
    Aprilaire S86WMUPR THERMOSTAT This is the Direct Replacement for 8620W FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted...
    MSRP: $227.34
    Now: $175.67
    Qty in Cart: 0
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    MSRP: $227.34
    Now: $175.67
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    Trane THT02342 -30/100f A19AGF Thermostat

    Trane

    MSRP: $194.75
    Now: $150.49
    Trane THT02342 -30/100f A19AGF Thermostat FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above
    MSRP: $194.75
    Now: $150.49
    Qty in Cart: 0
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    MSRP: $194.75
    Now: $150.49
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    Venstar VSACCTSENWB Ventstar Sensor W/Override

    Venstar

    MSRP: $41.88
    Now: $32.36
    Venstar VSACCTSENWB Ventstar Sensor W/Override FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above
    MSRP: $41.88
    Now: $32.36
    Qty in Cart: 0
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    MSRP: $41.88
    Now: $32.36
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    York 025-29105-000 TEMP SENSOR 50000 OHM

    York

    MSRP: $1,455.89
    Now: $1,125.01
    York 025-29105-000 TEMP SENSOR 50000 OHM FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above
    MSRP: $1,455.89
    Now: $1,125.01
    Qty in Cart: 0
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    MSRP: $1,455.89
    Now: $1,125.01
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    Copeland Comfort Control (White Rodgers) 1F83H-21NP Heat Pump Electronic Thermostat

    Copeland Comfort Control (White Rodgers)

    MSRP: $83.21
    Now: $64.30
    Copeland Comfort Control (White Rodgers) 1F83H-21NP Heat Pump Electronic Thermostat 20-30Vac Non-Programmable 2 Heat/1 Cool Heat Pump 45-99 degree F Setpoint 80 Series Dual Fuel Control Keypad Lockout FurnacePartSource.com...
    MSRP: $83.21
    Now: $64.30
    Qty in Cart: 0
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    MSRP: $83.21
    Now: $64.30
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    ClimateMaster AWC99U01 (Replaces ATC32U03) Commercial Heat Pump Thermostat WiFi

    Climatemaster

    MSRP: $652.87
    Now: $504.49
    ClimateMaster AWC99U01 (Replaces ATC32U03) Commercial Heat Pump Thermostat WiFi This is the Direct Replacement for ATC32U03 FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when...
    MSRP: $652.87
    Now: $504.49
    Qty in Cart: 0
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    MSRP: $652.87
    Now: $504.49
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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.