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Thermostats / Sensors

Thermostats / Sensors

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    Honeywell Analytics S301-IRF-1233ZD 1233ZD Gas Sensor

    Honeywell Analytics

    MSRP: $3,415.73
    Now: $2,639.43
    Honeywell Analytics S301-IRF-1233ZD 1233ZD Gas 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: $3,415.73
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    Veris Industries CWV2 CO2 0-2000PPM VALUE WALL SENSR

    Veris Industries

    MSRP: $194.91
    Now: $150.62
    Veris Industries CWV2 CO2 0-2000PPM VALUE WALL SENSR 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: $194.91
    Now: $150.62
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    Veris Industries TW2XAXK Temp Sensor Wall 10K

    Veris Industries

    MSRP: $41.48
    Now: $32.05
    Veris Industries TW2XAXK Temp Sensor Wall 10K 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: $41.48
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    Veris Industries TOIR00 Temp Sensor Probe SS

    Veris Industries

    Veris Industries TOIR00 Temp Sensor Probe SS 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
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    Veris Industries CW2LAXA Wall Mount CO2 Sensor W/LCD Display

    Veris Industries

    MSRP: $446.52
    Now: $345.04
    Veris Industries CW2LAXA Wall Mount CO2 Sensor W/LCD Display 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: $446.52
    Now: $345.04
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    Veris Industries HW2LA2A HW2 Series Sensor Wall Humid

    Veris Industries

    MSRP: $337.57
    Now: $260.85
    Veris Industries HW2LA2A HW2 Series Sensor Wall Humid 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: $337.57
    Now: $260.85
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    Veris Industries CW2LA2A Temp/Hum/CO2 Wall Mount Air Sensor

    Veris Industries

    MSRP: $453.85
    Now: $350.70
    Veris Industries CW2LA2A Temp/Hum/CO2 Wall Mount Air 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: $453.85
    Now: $350.70
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    Veris Industries PG08AM SS Gage Pressure Sensor 0/250# 4/20mA

    Veris Industries

    MSRP: $362.16
    Now: $279.85
    Veris Industries PG08AM SS Gage Pressure Sensor 0/250# 4/20mA 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: $362.16
    Now: $279.85
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    Uni-Gard STI-9110 THERMOSTAT GUARD-LARGE (LEXAN)

    Uni-Gard

    MSRP: $112.20
    Now: $86.70
    Uni-Gard STI-9110 THERMOSTAT GUARD-LARGE (LEXAN) 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: $112.20
    Now: $86.70
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    Uni-Gard STI-9105 THERMOSTAT GUARD-SMALL (LEXAN)

    Uni-Gard

    MSRP: $67.32
    Now: $52.02
    Uni-Gard STI-9105 THERMOSTAT GUARD-SMALL (LEXAN) 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: $67.32
    Now: $52.02
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    Utica-Dunkirk 121000020 Change Over Thermostat

    Utica-Dunkirk

    MSRP: $64.83
    Now: $50.09
    Utica-Dunkirk 121000020 Change Over 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: $64.83
    Now: $50.09
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    iO HVAC Controls CL-70 70F clg TempConstructStat24v

    iO HVAC Controls

    MSRP: $16.32
    Now: $12.61
    iO HVAC Controls CL-70 70F clg TempConstructStat24v 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: $16.32
    Now: $12.61
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    iO HVAC Controls UT32 Titan Touchscreen Thermostat

    iO HVAC Controls

    MSRP: $146.92
    Now: $113.53
    iO HVAC Controls UT32 Titan Touchscreen 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: $146.92
    Now: $113.53
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    iO HVAC Controls CL-75 75F clg TempConstructStat24v

    iO HVAC Controls

    MSRP: $15.54
    Now: $12.01
    iO HVAC Controls CL-75 75F clg TempConstructStat24v 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: $15.54
    Now: $12.01
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    iO HVAC Controls TS-70 70F HtgTempConstructStat24v

    iO HVAC Controls

    MSRP: $11.52
    Now: $8.90
    iO HVAC Controls TS-70 70F HtgTempConstructStat24v 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: $11.52
    Now: $8.90
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    iO HVAC Controls TS-65 65F HtgTempConstructStat24v

    iO HVAC Controls

    MSRP: $12.08
    Now: $9.33
    iO HVAC Controls TS-65 65F HtgTempConstructStat24v 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: $12.08
    Now: $9.33
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    iO HVAC Controls TS-60 60F HtgTempConstructStat24v1am

    iO HVAC Controls

    MSRP: $12.08
    Now: $9.33
    iO HVAC Controls TS-60 60F HtgTempConstructStat24v1am 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: $12.08
    Now: $9.33
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    iO HVAC Controls CL-55 55F COMPRESSOR LOCK OUT T-STAT

    iO HVAC Controls

    MSRP: $18.89
    Now: $14.60
    iO HVAC Controls CL-55 55F COMPRESSOR LOCK OUT T-STAT 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: $18.89
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    iO HVAC Controls DFK-ODT OUTDOOR THERMOSTAT

    iO HVAC Controls

    MSRP: $65.62
    Now: $50.71
    iO HVAC Controls DFK-ODT OUTDOOR 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: $65.62
    Now: $50.71
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    iO HVAC Controls TS-75 75F HtgTempConstructStat24v

    iO HVAC Controls

    MSRP: $11.52
    Now: $8.90
    iO HVAC Controls TS-75 75F HtgTempConstructStat24v 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
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    Now: $8.90
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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.