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Thermostats / Sensors

Thermostats / Sensors

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    Nordyne 626491R Defrost Sensor

    Nordyne

    MSRP: $25.99
    Now: $20.08
    Nordyne 626491R Defrost Sensor   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements   Cross References
    MSRP: $25.99
    Now: $20.08
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    Nordyne 626488R Defrost Sensor L68-38F

    Nordyne

    MSRP: $36.40
    Now: $28.13
    Nordyne 626488R Defrost Sensor L68-38F  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $36.40
    Now: $28.13
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    Robertshaw EGT-08 Eaton Thermostat

    Robertshaw

    MSRP: $57.85
    Now: $43.83
    Robertshaw EGT-08 Eaton Thermostatl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $57.85
    Now: $43.83
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    Robertshaw 9204V 24V 2 Wire 1 Heat Vert Thermostat

    Robertshaw

    MSRP: $38.69
    Now: $29.90
    Robertshaw 9204V 24V 2 Wire 1 Heat Vert Thermostatl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $38.69
    Now: $29.90
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    Robertshaw 9204H 2 Wire 24V Horz, White 1 Heat

    Robertshaw

    MSRP: $33.94
    Now: $26.23
    Robertshaw 9204H 2 Wire 24V Horz, White 1 Heatl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $33.94
    Now: $26.23
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    Robertshaw 9200V 24V Ht/Cl 50-90 Vertical

    Robertshaw

    MSRP: $44.07
    Now: $34.06
    Robertshaw 9200V 24V Ht/Cl 50-90 Verticall  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $44.07
    Now: $34.06
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    Robertshaw 9200H 24V Ht/Cl 50-90F Horizontal (Obsolete/Discontinued)

    Robertshaw

    MSRP: $18.91
    Now: $14.61
    PART HAS BEEN DISCONTINUED - Please Call 1-866-620-8417 For Availability or ReplacementRobertshaw 9200H 24V Ht/Cl 50-90F Horizontal (Obsolete/Discontinued) We're sorry--this item is no longer available.
    MSRP: $18.91
    Now: $14.61
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    Robertshaw 8000-024 Spdt Water Level# Sw, Tube Open

    Robertshaw

    MSRP: $115.34
    Now: $89.12
    Robertshaw 8000-024 Spdt Water Level# Sw, Tube Openl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $115.34
    Now: $89.12
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    Robertshaw 800 120V Thermostat

    Aprilaire

    MSRP: $1,481.72
    Now: $1,144.96
    Robertshaw 800 120V Thermostatl   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements   Cross References  
    MSRP: $1,481.72
    Now: $1,144.96
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    Robertshaw 5600-411 120-160F Lower Water Heater Thermostat

    Robertshaw

    MSRP: $35.29
    Now: $27.27
    Robertshaw 5600-411 120-160F Lower Water Heater Thermostatl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $35.29
    Now: $27.27
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    Robertshaw 5600-311 Water Heater Thermostat

    Robertshaw

    MSRP: $62.54
    Now: $48.32
    Robertshaw 5600-311 Water Heater Thermostatl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $62.54
    Now: $48.32
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    Robertshaw 5600-310 Water Heater Thermostat

    Robertshaw

    MSRP: $68.57
    Now: $52.99
    Robertshaw 5600-310 Water Heater Thermostatl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $68.57
    Now: $52.99
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    Robertshaw 5330-001 175/550F, 72", Open-Hi Thermostat, With Off

    Robertshaw

    MSRP: $110.14
    Now: $85.11
    Robertshaw 5330-001 175/550F, 72", Open-Hi Thermostat, With Offl   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements      
    MSRP: $110.14
    Now: $85.11
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    Robertshaw 5320-175 140/550F With 600F Broil, 72" With Off

    Robertshaw

    MSRP: $110.14
    Now: $85.11
    Robertshaw 5320-175 140/550F With 600F Broil, 72" With Offl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $110.14
    Now: $85.11
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    Robertshaw 5300-793 100/450F Pilot Duty Thermostat 30" Cap

    Robertshaw

    MSRP: $158.66
    Now: $122.60
    Robertshaw 5300-793 100/450F Pilot Duty Thermostat 30" Capl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $158.66
    Now: $122.60
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    Robertshaw 5300-788 100/450F, 30" Cap, Pilot Duty Thermostat

    Robertshaw

    MSRP: $204.39
    Now: $154.84
    Robertshaw 5300-788 100/450F, 30" Cap, Pilot Duty Thermostatl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $204.39
    Now: $154.84
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    Robertshaw 5300-770 175/500F, 60", Pilot Duty Thermostat

    Robertshaw

    MSRP: $154.44
    Now: $119.34
    Robertshaw 5300-770 175/500F, 60", Pilot Duty Thermostatl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $154.44
    Now: $119.34
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    Robertshaw 5300-758 175-375 S.S. Bulb 54" Cap.

    Robertshaw

    MSRP: $161.75
    Now: $124.99
    Robertshaw 5300-758 175-375 S.S. Bulb 54" Cap.l   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements   Cross References  
    MSRP: $161.75
    Now: $124.99
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    Robertshaw 5300-757 245-400,30" Cap, 5/16 X 10" Blb

    Robertshaw

    MSRP: $261.95
    Now: $198.45
    Robertshaw 5300-757 245-400,30" Cap, 5/16 X 10" Blbl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $261.95
    Now: $198.45
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    Robertshaw 5300-748 100-450 Temp 24" Cap Kxa-200

    Robertshaw

    MSRP: $152.59
    Now: $115.60
    Robertshaw 5300-748 100-450 Temp 24" Cap Kxa-200l  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $152.59
    Now: $115.60
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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.