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Thermostats / Sensors

Thermostats / Sensors

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    Danfoss 087N-1196 THERMOSTAT RMT24

    Danfoss

    MSRP: $94.73
    Now: $73.20
    Danfoss 087N-1196 THERMOSTAT RMT24 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: $94.73
    Now: $73.20
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    Baltimore Aircoil (BAC) 313859 THERMOSTAT

    Baltimore Aircoil (BAC)

    MSRP: $998.25
    Now: $771.38
    Baltimore Aircoil (BAC) 313859 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: $998.25
    Now: $771.38
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    Danfoss 077B0020 -4.5/-11.8deg C Thermostat

    Danfoss

    MSRP: $63.69
    Now: $49.22
    Danfoss 077B0020 -4.5/-11.8deg C 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: $63.69
    Now: $49.22
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    System Sensor B114LPBT SSD SERIES100 24VAC/DC BASE

    System Sensor

    MSRP: $120.50
    Now: $91.29
    System Sensor B114LPBT SSD SERIES100 24VAC/DC BASE 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: $120.50
    Now: $91.29
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    Rheem-Ruud SP310020 110/170f SPST Thermostat

    Rheem-Ruud

    MSRP: $16.02
    Now: $12.38
    Rheem-Ruud SP310020 110/170f SPST 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: $16.02
    Now: $12.38
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    Johnson Controls T-4002-9009 TSTAT, REV Act,HORZ.,CELCIUS

    Johnson Controls

    MSRP: $299.90
    Now: $231.74
    Johnson Controls T-4002-9009 TSTAT, REV Act,HORZ.,CELCIUS 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: $299.90
    Now: $231.74
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    Hoshizaki 4A2879-01 Thermostat A30-3952

    Hoshizaki

    MSRP: $188.84
    Now: $145.92
    Hoshizaki 4A2879-01 Thermostat A30-3952 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: $188.84
    Now: $145.92
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    Johnson Controls TEC3630-16-000 TSTAT MSTP/N2 RTU/HP WHT

    Johnson Controls

    MSRP: $674.87
    Now: $521.49
    Johnson Controls TEC3630-16-000 TSTAT MSTP/N2 RTU/HP WHT 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: $674.87
    Now: $521.49
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    International Environmental 71491071 STAT ASSEMBLY

    International Environmental

    MSRP: $204.25
    Now: $157.83
    International Environmental 71491071 STAT ASSEMBLY 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: $204.25
    Now: $157.83
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    G.E. APPLIANCE PARTS WP26X24981 Thermostat Kit

    GE Appliance

    MSRP: $16.42
    Now: $12.69
    G.E. APPLIANCE PARTS WP26X24981 Thermostat Kit 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: $16.42
    Now: $12.69
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    G.E. APPLIANCE PARTS WP26X21585 Thermostat Kit

    GE Appliance

    MSRP: $13.30
    Now: $10.28
    G.E. APPLIANCE PARTS WP26X21585 Thermostat Kit 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: $13.30
    Now: $10.28
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    Marley Engineered Products QFFT2 THERMOSTAT

    Marley Engineered Products

    MSRP: $97.43
    Now: $75.29
    Marley Engineered Products QFFT2 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: $97.43
    Now: $75.29
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    Trane THT0905 120/240V SPNC Stat; 35Op 40Cl

    Trane

    MSRP: $82.07
    Now: $63.42
    Trane THT0905 120/240V SPNC Stat; 35Op 40Cl 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: $82.07
    Now: $63.42
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    Markel Products Co. T5102 Intergral Thermostat

    Markel Products Co.

    MSRP: $326.40
    Now: $252.22
    Markel Products Co. T5102 Intergral 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: $326.40
    Now: $252.22
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    Markel Products Co. 64087003 THERMOSTAT,1STAGE,24V,6300 SER

    Markel Products Co.

    MSRP: $480.25
    Now: $371.10
    Markel Products Co. 64087003 THERMOSTAT,1STAGE,24V,6300 SER 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: $480.25
    Now: $371.10
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    Now: $371.10
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    G.E. APPLIANCES 12U74 HEATER THERMOSTAT

    Lennox

    MSRP: $115.93
    Now: $89.58
    G.E. APPLIANCES 12U74 HEATER 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: $115.93
    Now: $89.58
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    York S1-TBSU305-Y TSTAT PRGRM 7-DAY 3H/2C COMML

    York

    MSRP: $280.25
    Now: $216.56
    York S1-TBSU305-Y TSTAT PRGRM 7-DAY 3H/2C COMML 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: $280.25
    Now: $216.56
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    Lennox 15Z69 M30 4.3" LCD Prog. Thermostat

    Lennox

    MSRP: $322.16
    Now: $248.94
    Lennox 15Z69 M30 4.3" LCD Prog. 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: $322.16
    Now: $248.94
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    Bradford White 264-33460-00 Commercial Immersion Thermstat

    Bradford White

    MSRP: $232.30
    Now: $179.51
    Bradford White 264-33460-00 Commercial Immersion Thermstat 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: $232.30
    Now: $179.51
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    Marley Engineered Products 5813-0047-000 Thermostat L115F

    Marley Engineered Products

    MSRP: $153.38
    Now: $118.52
    Marley Engineered Products 5813-0047-000 Thermostat L115F 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: $153.38
    Now: $118.52
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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.