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Thermostats / Sensors

Thermostats / Sensors

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    Schneider Electric (Barber Colman) ETD500-4 Temperature Sensor, Continuum Sensor, 4" Duct, 1K Ohms @ 32 Degree

    Schneider Electric (Barber Colman)

    MSRP: $35.31
    Now: $27.28
    Schneider Electric (Barber Colman) ETD500-4 Temperature Sensor Continuum Sensor 4" Duct 1K Ohms @ 32 Degree FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM...
    MSRP: $35.31
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    Johnson Controls WHA-GM2-03 Refrigerant Sensor A2L 10' cable

    Johnson Controls

    MSRP: $79.25
    Now: $61.24
    Johnson Controls WHA-GM2-03 A2L Refrigerant Sensor 10' cable 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: $79.25
    Now: $61.24
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    York 025-40273-008 Sensor Temp Ambient YCAL

    York

    MSRP: $175.58
    Now: $135.67
    York 025-40273-008 Sensor Temp Ambient YCAL 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: $175.58
    Now: $135.67
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    Honeywell Sensing and Control 2455RM-90750712 Thermostat

    Honeywell Sensing and Control

    MSRP: $157.06
    Now: $121.37
    Honeywell Sensing and Control 2455RM-90750712 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: $157.06
    Now: $121.37
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    Johnson Controls GM200-MH00 A2L Refrigeration Sensor, R32, RS485 Modbus output, 24 V, 2 ft cable with male Connector

    Johnson Controls

    MSRP: $295.05
    Now: $228.00
    Johnson Controls GM200-MH00 A2L Refrigeration Sensor R32, RS485 Modbus output 24 V 2 ft cable with male Connector FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by...
    MSRP: $295.05
    Now: $228.00
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    Johnson Controls GM204-MH00 A2L Refrigeration Sensor R454A, RS485 Modbus output, 24 V, 2 ft cable with male Connector

    Johnson Controls

    MSRP: $295.05
    Now: $228.00
    Johnson Controls GM204-MH00 A2L Refrigeration Sensor R454A, RS485 Modbus output, 24 V 2 ft cable with male Connector FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by...
    MSRP: $295.05
    Now: $228.00
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    Belimo 01UT-5L Out Temp Sensor passive NTC10k

    Belimo

    MSRP: $40.95
    Now: $31.65
    Belimo 01UT-5L Out Temp Sensor passive NTC10k 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: $40.95
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    York 025-44012-000 DIN Level Sensor

    York

    MSRP: $1,849.80
    Now: $1,429.39
    York 025-44012-000 DIN 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: $1,849.80
    Now: $1,429.39
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    York 025-44007-000 Sensor Temp 50 000 OHMS

    York

    MSRP: $2,018.26
    Now: $1,528.99
    York 025-44007-000 Sensor Temp 50 000 OHMS 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: $2,018.26
    Now: $1,528.99
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    York 025-39721-501 Temp Sensor NTC 50K HIRS OIL

    York

    MSRP: $414.89
    Now: $320.60
    York 025-39721-501 Temp Sensor NTC 50K HIRS OIL 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: $414.89
    Now: $320.60
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    York 371-05521-000 YK Kit PRV Position Sensor

    York

    MSRP: $2,499.11
    Now: $1,931.13
    York 371-05521-000 YK Kit PRV Position 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: $2,499.11
    Now: $1,931.13
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    Lochinvar & A.O. Smith 100275528 Sensor, Flow

    Lochinvar & A.O. Smith

    MSRP: $38.74
    Now: $29.94
    Lochinvar & A.O. Smith 100275528 Sensor, Flow 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: $38.74
    Now: $29.94
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    MAMAC Systems TE-701-D-21-C Duct Temperature Sensor with 1,800 Ohm NTC Thermistor Sensor

    MAMAC Systems

    MSRP: $16.71
    Now: $12.92
    MAMAC Systems TE-701-D-21-C Duct Temperature Sensor with 1,800 Ohm NTC Thermistor Sensor 8" Probe Length Bulkhead Mount 6' plenum cable FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business...
    MSRP: $16.71
    Now: $12.92
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    Heatcraft Refrigeration 28913901 Room Thermostat

    Heatcraft Refrigeration

    MSRP: $200.11
    Now: $154.63
    Heatcraft Refrigeration 28913901 Room 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: $200.11
    Now: $154.63
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    Honeywell KTTBA002 Long Sensing Tube for VMU500kw

    Honeywell

    MSRP: $98.62
    Now: $76.21
    Honeywell KTTBA002 Long Sensing Tube for VMU500kw 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: $98.62
    Now: $76.21
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    Nordyne 1008338 Probe Sensor

    Nordyne

    MSRP: $17.16
    Now: $13.26
    Nordyne 1008338 Probe 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: $17.16
    Now: $13.26
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    Trane SEN0917 Remote Sensor

    Trane

    MSRP: $83.74
    Now: $64.71
    Trane SEN0917 Remote 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: $83.74
    Now: $64.71
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    Honeywell C7021R2000 NTC Type II Temperature Sensor

    Honeywell

    MSRP: $224.12
    Now: $173.18
    Honeywell C7021R2000 NTC Type II Temperature Sensor Averaging Duct Discharge Air Sensing 12 Foot Insertion 10k Ohm -40/250 Degree Temperature Range FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts...
    MSRP: $224.12
    Now: $173.18
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    Aaon V92310 Heat Wheel Rotation Sensor

    Aaon

    MSRP: $609.15
    Now: $470.70
    Aaon V92310 Heat Wheel Rotation 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: $609.15
    Now: $470.70
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    Lennox 17G76 CS8500 ComfortSense Thermostat w/CO2 Sens

    Lennox

    MSRP: $1,469.11
    Now: $1,135.22
    Lennox 17G76 CS8500 ComfortSense w/CO2 Sens 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: $1,469.11
    Now: $1,135.22
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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.