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Thermostats / Sensors

Thermostats / Sensors

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    Beko Thermostat Guards BTG-UK2 ClearTstatGuard 8.25x4 5/8"

    Beko Thermostat Guards

    MSRP: $22.56
    Now: $17.43
    Beko Thermostat Guards BTG-UK2 ClearTstatGuard 8.25x4 5/8" 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: $22.56
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    Beko Thermostat Guards BTG-RK ClearTstatGuard 6 1/4x3 5/8"

    Beko Thermostat Guards

    MSRP: $20.82
    Now: $16.09
    Beko Thermostat Guards BTG-RK ClearTstatGuard 6 1/4x3 5/8" 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: $20.82
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    Beko Thermostat Guards BTG-K ClearTstatGuard 5 1/4x4 5/8"

    Beko Thermostat Guards

    MSRP: $20.82
    Now: $16.09
    Beko Thermostat Guards BTG-K ClearTstatGuard 5 1/4x4 5/8" 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: $20.82
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    Beko Thermostat Guards BTG-EK ClearTstatGuard 4x4x2 3/8"

    Beko Thermostat Guards

    MSRP: $20.82
    Now: $16.09
    Beko Thermostat Guards BTG-EK ClearTstatGuard 4x4x2 3/8" 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: $20.82
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    BROAN-NuTone S99030324 Thermostat

    BROAN-NuTone

    MSRP: $109.06
    Now: $84.28
    BROAN-NuTone S99030324 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: $109.06
    Now: $84.28
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    BROAN-NuTone S99030323 F150-20F Downdraft Thermostat

    BROAN-NuTone

    MSRP: $32.98
    Now: $24.99
    BROAN-NuTone S99030323 F150-20F Downdraft 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: $32.98
    Now: $24.99
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    BROAN-NuTone S99030191 Thermostat

    BROAN-NuTone

    MSRP: $48.48
    Now: $37.46
    BROAN-NuTone S99030191 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: $48.48
    Now: $37.46
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    BROAN-NuTone S97008413 Thermostat

    BROAN-NuTone

    MSRP: $73.92
    Now: $57.12
    BROAN-NuTone S97008413 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: $73.92
    Now: $57.12
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    Marley Engineered Products 3301-2020-001 Thermostat Knob

    Marley Engineered Products

    MSRP: $15.34
    Now: $11.86
    Marley Engineered Products 3301-2020-001 Thermostat Knob 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: $15.34
    Now: $11.86
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    Marley Engineered Products 5813-2009-000 SPST 22amp Thermostat

    Marley Engineered Products

    MSRP: $101.64
    Now: $78.54
    Marley Engineered Products 5813-2009-000 SPST 22amp 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: $101.64
    Now: $78.54
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    Marley Engineered Products 410112000 Thermostat

    Marley Engineered Products

    MSRP: $206.04
    Now: $159.21
    Marley Engineered Products 410112000 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: $206.04
    Now: $159.21
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    Marley Engineered Products 410129001 Thermostat

    Marley Engineered Products

    MSRP: $122.89
    Now: $94.96
    Marley Engineered Products 410129001 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: $122.89
    Now: $94.96
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    Marley Engineered Products TA2ANWCA DP Stat 22A 120-277V NW

    Marley Engineered Products

    MSRP: $51.22
    Now: $39.58
    Marley Engineered Products TA2ANWCA DP Stat 22A 120-277V NW 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: $51.22
    Now: $39.58
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    Marley Engineered Products 410127001 277V Thermostat

    Marley Engineered Products

    MSRP: $157.08
    Now: $121.38
    Marley Engineered Products 410127001 277V 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: $157.08
    Now: $121.38
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    Marley Engineered Products T100 LINE VOLT SNAP ACTION T-STAT

    Marley Engineered Products

    MSRP: $89.38
    Now: $69.07
    Marley Engineered Products T100 LINE VOLT SNAP ACTION 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: $89.38
    Now: $69.07
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    Marley Engineered Products T200 DPST stat 22amps 120-240V

    First Company

    MSRP: $204.72
    Now: $158.19
    Marley Engineered Products T200 DPST stat 22amps 120-240V 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: $204.72
    Now: $158.19
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    Marley Engineered Products 3301-11015-001 Knob Thermostat

    Marley Engineered Products

    MSRP: $5.12
    Now: $3.95
    Marley Engineered Products 3301-11015-001 Knob 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
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    Marley Engineered Products TA2AW 120/277V 22A DPDT Stat NavajoW

    Marley Engineered Products

    MSRP: $73.79
    Now: $57.02
    Marley Engineered Products TA2AW 120/277V 22A DPDT Stat NavajoW 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: $73.79
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    Marley Engineered Products HUHAAMT1-S 40/85F SINGLE PL STAT MAX250V

    Marley Engineered Products

    MSRP: $190.38
    Now: $147.11
    Marley Engineered Products HUHAAMT1-S 40/85F SINGLE PL STAT MAX250V 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: $190.38
    Now: $147.11
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    Marley Engineered Products TA1AW 22A 120-277V 1 POLE STAT 45-90

    Marley Engineered Products

    MSRP: $60.82
    Now: $47.00
    Marley Engineered Products TA1AW 22A 120-277V 1 POLE STAT 45-90 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: $60.82
    Now: $47.00
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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.