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Thermostats / Sensors

Thermostats / Sensors

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  • Furnace part souls images

    Honeywell Analytics SPXCDXSO1SS 25% Oxygen Xcd Sensor

    Honeywell Analytics

    MSRP: $1,217.82
    Now: $941.04
    Honeywell Analytics SPXCDXSO1SS 25% Oxygen Xcd 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: $1,217.82
    Now: $941.04
    Qty in Cart: 0
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    MSRP: $1,217.82
    Now: $941.04
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    Honeywell Analytics SPXCDXSFXSS Flammable Cat 0-100% Sensor

    Honeywell Analytics

    MSRP: $1,217.82
    Now: $941.04
    Honeywell Analytics SPXCDXSFXSS Flammable Cat 0-100% 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...
    MSRP: $1,217.82
    Now: $941.04
    Qty in Cart: 0
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    MSRP: $1,217.82
    Now: $941.04
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    Fireye TS-350-4 Temperature Sensor For Z Module Control

    Fireye

    MSRP: $815.41
    Now: $630.09
    Fireye TS-350-4 Temperature Sensor For Z Module Control  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $815.41
    Now: $630.09
    Qty in Cart: 0
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    MSRP: $815.41
    Now: $630.09
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    Fireye TS752-8 Temperature Sensor 32F To 752F

    Fireye

    MSRP: $1,485.99
    Now: $1,148.26
    Fireye TS752-8 Temperature Sensor 32F To 752F  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $1,485.99
    Now: $1,148.26
    Qty in Cart: 0
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    MSRP: $1,485.99
    Now: $1,148.26
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    Fireye TS752-4 Temperature Sensor 32F To 752F

    Fireye

    MSRP: $1,182.21
    Now: $913.52
    Fireye TS752-4 Temperature Sensor 32F To 752F  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $1,182.21
    Now: $913.52
    Qty in Cart: 0
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    MSRP: $1,182.21
    Now: $913.52
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    Daikin-McQuay 330591103 Sensor Slide Pos Aws & 32

    Daikin-McQuay

    MSRP: $1,405.52
    Now: $1,086.08
    Daikin-McQuay 330591103 Sensor Slide Pos Aws & 32  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $1,405.52
    Now: $1,086.08
    Qty in Cart: 0
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    MSRP: $1,405.52
    Now: $1,086.08
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    CHECK 109159 Mlv11-8-500-Ex/40B/112 Sensor

    CHECK

    MSRP: $1,430.12
    Now: $1,083.43
    CHECK 109159 Mlv11-8-500-Ex/40B/112 Sensor  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $1,430.12
    Now: $1,083.43
    Qty in Cart: 0
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    MSRP: $1,430.12
    Now: $1,083.43
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    Carrier 33CS2PPRH-03 7Day,5/2,Or1Day Commerical Programmable Thermostat w/Humidifier

    Carrier

    MSRP: $952.33
    Now: $735.89
    Carrier 33CS2PPRH-03 7Day,5/2,Or1Day Commercial Programmable Thermostat w/Humidifier Item is Non Cancelable / Non Returnable FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No...
    MSRP: $952.33
    Now: $735.89
    Qty in Cart: 0
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    MSRP: $952.33
    Now: $735.89
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    Carrier 30GX660002 Liquid Level Sensor

    Carrier

    MSRP: $1,415.45
    Now: $1,072.31
    Carrier 30GX660002 Liquid Level Sensor  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $1,415.45
    Now: $1,072.31
    Qty in Cart: 0
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    MSRP: $1,415.45
    Now: $1,072.31
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    Johnson Controls # A19BBC-2

    Johnson Controls

    MSRP: $214.80
    Now: $165.98
      Johnson Controls # A19BBC-2   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements    
    MSRP: $214.80
    Now: $165.98
    Qty in Cart: 0
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    MSRP: $214.80
    Now: $165.98
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    White Rodgers # 30A46-5 42"PluginPilotSensorForCushPwr

    Copeland Comfort Control (White Rodgers)

    MSRP: $494.41
    Now: $382.04
    Emerson Climate-White Rodgers # 30A46-5   42"PluginPilotSensorForCushPwr   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts – Every time No Minimum Order Requirements
    MSRP: $494.41
    Now: $382.04
    Qty in Cart: 0
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    MSRP: $494.41
    Now: $382.04
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    A.O. Smith 100110026 (Replacement for 9004703105) Natural Gas Thermostat

    Lochinvar & A.O. Smith

    MSRP: $352.32
    Now: $272.25
    A.O. Smith 100110026 (Replacement for 9004703105) Natural Gas Thermostat This is the Updated Version for 9004703105 FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when...
    MSRP: $352.32
    Now: $272.25
    Qty in Cart: 0
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    MSRP: $352.32
    Now: $272.25
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    York Controls 025-47673-000 (replacement for 025-28935-000)

    York

    MSRP: $158.96
    Now: $122.83
    York Controls # 025-47673-000 Suction/liquid Line Temp Sensor Item is Non Cancelable / Non Returnable This is the direct replacement for 025-28935-000  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business...
    MSRP: $158.96
    Now: $122.83
    Qty in Cart: 0
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    MSRP: $158.96
    Now: $122.83
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    Resideo TH5110D1022 (Replaces TH5110D1006) Focus Pro 5000 Digital Non Programmable Thermostat

    Honeywell

    MSRP: $181.48
    Now: $140.24
    Resideo TH5110D1022 (Replaces TH5110D1006) Focus Pro 5000 Digital Non Programmable Thermostat 20-30Vac or 750mV Up to 1 Heat/1 Cool Conventional Systems and Heat Pumps with No Auxiliary Heat Heat-Off-Cool-Auto System Switching Auto-On...
    MSRP: $181.48
    Now: $140.24
    Qty in Cart: 0
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    MSRP: $181.48
    Now: $140.24
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    Siemens QPM2100 Co2 Duct Sensor, 0To10Vdc

    Siemens Building Technology

    MSRP: $614.84
    Now: $475.10
    Siemens QPM2100 Co2 Duct Sensor, 0To10Vdc  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $614.84
    Now: $475.10
    Qty in Cart: 0
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    MSRP: $614.84
    Now: $475.10
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    Siemens QPA2000 Room Sensor Co2 0-10Vdc

    Siemens Building Technology

    MSRP: $448.67
    Now: $346.70
    Siemens QPA2000 Room Sensor Co2 0-10Vdc  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $448.67
    Now: $346.70
    Qty in Cart: 0
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    MSRP: $448.67
    Now: $346.70
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    Siemens QFM3160 Temp/Rh Sensor 2 0/10Vdc Outpt

    Siemens Building Technology

    MSRP: $362.42
    Now: $280.05
    Siemens QFM3160 Temp/Rh Sensor 2 0/10Vdc Outpt  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $362.42
    Now: $280.05
    Qty in Cart: 0
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    MSRP: $362.42
    Now: $280.05
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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.