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Thermostats / Sensors

Thermostats / Sensors

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    Superior Radiant CE054 THERMOSTAT, WATERPROOF 1 STAGE

    Superior Radiant

    MSRP: $150.27
    Now: $116.11
    Superior Radiant CE054 THERMOSTAT, WATERPROOF 1 STAGE 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: $150.27
    Now: $116.11
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    Spence Engineering 07-63451-00 Bronze Tstat;#704Bulb & 10'Cap

    Spence Engineering

    MSRP: $1,544.94
    Now: $1,193.82
    Spence Engineering 07-63451-00 Bronze Tstat;#704Bulb & 10'Cap 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: $1,544.94
    Now: $1,193.82
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    Stelpro STE403NPW24 Electric Tstat 5750W/347V

    Stelpro

    MSRP: $249.86
    Now: $193.07
    Stelpro STE403NPW24 Electric Tstat 5750W/347V 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: $249.86
    Now: $193.07
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    Detroit Radiant RK-130 MILLIVOLT THERMOSTAT

    Detroit Radiant

    MSRP: $84.13
    Now: $65.01
    Detroit Radiant RK-130 MILLIVOLT 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: $84.13
    Now: $65.01
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    Reznor 257464 TSTAT GUARD

    Reznor

    MSRP: $163.58
    Now: $126.40
    Reznor 257464 TSTAT GUARD 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: $163.58
    Now: $126.40
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    Reznor 255350 24v HEAT-COOL TSTAT 50/90 SNAP

    Reznor

    MSRP: $179.62
    Now: $138.80
    Reznor 255350 24v HEAT-COOL TSTAT 50/90 SNAP 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: $179.62
    Now: $138.80
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    Reznor 24857 OVERRIDE STAT

    Reznor

    MSRP: $689.50
    Now: $532.80
    Reznor 24857 OVERRIDE 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: $689.50
    Now: $532.80
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    Robertshaw RS9320T 7-Day 5-1-1 Touch 3H/2C Stat

    Robertshaw

    MSRP: $134.19
    Now: $103.70
    Robertshaw RS9320T 7-Day 5-1-1 Touch 3H/2C 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: $134.19
    Now: $103.70
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    Robertshaw RS8210 Non-Program Stat 2H/1C

    Robertshaw

    MSRP: $76.30
    Now: $58.96
    Robertshaw RS8210 Non-Program Stat 2H/1C 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: $76.30
    Now: $58.96
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    Robertshaw GSR60300000 THERMOSTAT 200-400F RANGE

    Robertshaw

    MSRP: $188.13
    Now: $145.38
    Robertshaw GSR60300000 THERMOSTAT 200-400F RANGE 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: $188.13
    Now: $145.38
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    Robertshaw KA-1119-96 WELL THERMOSTAT

    Robertshaw

    MSRP: $117.78
    Now: $91.01
    Robertshaw KA-1119-96 WELL 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: $117.78
    Now: $91.01
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    Ranco C12-2001 SPDT,-1-59F,30"CAP,HEAT STAT

    Ranco

    MSRP: $140.50
    Now: $108.57
    Ranco C12-2001 SPDT,-1-59F,30"CAP,HEAT 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: $140.50
    Now: $108.57
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    Ranco A30-3952 48"Cap Thermostat Kit 5.5

    Ranco

    MSRP: $49.95
    Now: $38.59
    Ranco A30-3952 48"Cap Thermostat Kit 5.5 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: $49.95
    Now: $38.59
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    Rheem-Ruud AP14696B THERMOSTAT SHANK

    Rheem-Ruud

    MSRP: $148.15
    Now: $114.48
    Rheem-Ruud AP14696B THERMOSTAT SHANK 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: $148.15
    Now: $114.48
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    Rheem-Ruud RETST800SYS ECONET 800 SMART THERMOSTAT

    Rheem-Ruud

    MSRP: $504.01
    Now: $389.46
    Rheem-Ruud RETST800SYS ECONET 800 SMART 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: $504.01
    Now: $389.46
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    Rheem-Ruud SP8294 110/170f DPST M/R Thermostat

    Rheem-Ruud

    MSRP: $37.16
    Now: $28.71
    Rheem-Ruud SP8294 110/170f DPST M/R 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: $37.16
    Now: $28.71
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    Rheem-Ruud SP210245 Electric Thermostat

    Rheem-Ruud

    MSRP: $39.29
    Now: $30.36
    Rheem-Ruud SP210245 Electric 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: $39.29
    Now: $30.36
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    Rheem-Ruud SP210239 ELECTRIC LOWER T-STAT

    Rheem-Ruud

    MSRP: $24.73
    Now: $19.11
    Rheem-Ruud SP210239 ELECTRIC LOWER 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: $24.73
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    Rheem-Ruud 1HD-1298 7,5/2 COMM HD THERMOSTAT

    Rheem-Ruud

    MSRP: $954.21
    Now: $737.35
    Rheem-Ruud 1HD-1298 7,5/2 COMM HD 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: $954.21
    Now: $737.35
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    Rheem-Ruud AP17455-3 EcoNet Enabled Stat Faceplate

    Rheem-Ruud

    MSRP: $9.88
    Now: $7.64
    Rheem-Ruud AP17455-3 EcoNet Enabled Stat Faceplate 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: $9.88
    Now: $7.64
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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.