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Thermostats / Sensors

Thermostats / Sensors

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    Trane SEN1159 Ambient Sensor

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    MSRP: $28.68
    Now: $22.16
    Ambient Sensor   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $28.68
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    Trane SEN1107 -40/65'C Thermistor; 12"Leads

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    MSRP: $44.72
    Now: $34.55
    -40/65'C Thermistor; 12"Leads   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $44.72
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    Trane SEN1036 Humidity Sensor

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    MSRP: $320.78
    Now: $247.87
    Humidity Sensor   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $320.78
    Now: $247.87
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    Trane SEN1001 -45/65f Watertight Thermister

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    MSRP: $60.79
    Now: $46.97
    -45/65f Watertight Thermister   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $60.79
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    Trane SEN0951 Temperature. Thermistor Probe PAir

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    MSRP: $691.27
    Now: $534.16
    Temperature. Thermistor Probe PAir   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements      
    MSRP: $691.27
    Now: $534.16
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    Trane SEN0355 Flame Sensor

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    MSRP: $66.30
    Now: $51.23
    Flame Sensor   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements      
    MSRP: $66.30
    Now: $51.23
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    Trane SEN0347 9.75K Ohm @75f Sensor Assembly

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    MSRP: $75.06
    Now: $58.00
    9.75K Ohm @75f Sensor Assembly   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements      
    MSRP: $75.06
    Now: $58.00
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    Trane SEN0306 15/140f Water Temperature Snsr; 5"Prb

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    MSRP: $484.47
    Now: $374.37
    15/140f Water Temperature Snsr; 5"Prb   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $484.47
    Now: $374.37
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    Trane SEN0297 Flame Sensor

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    MSRP: $42.08
    Now: $32.51
    Flame Sensor   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements      
    MSRP: $42.08
    Now: $32.51
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    Trane SEN0277 32-125f Humidity Sensor

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    MSRP: $301.98
    Now: $233.35
    32-125f Humidity Sensor   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $301.98
    Now: $233.35
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    Trane SEN0266 Coil Sensor & Resistor

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    MSRP: $53.16
    Now: $41.08
    Coil Sensor & Resistor   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $53.16
    Now: $41.08
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    Trane SEN0235 Outdoor Air Sensor; 70Op 60Cl

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    MSRP: $165.71
    Now: $125.54
    Outdoor Air Sensor; 70Op 60Cl   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $165.71
    Now: $125.54
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    Trane SEN0233 Flame Sensor

    Trane

    MSRP: $73.84
    Now: $57.06
    Flame Sensor   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements      
    MSRP: $73.84
    Now: $57.06
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    Trane SEN0205 Temperature Sensor; Set Of 2

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    MSRP: $603.80
    Now: $466.57
    Temperature Sensor; Set Of 2   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $603.80
    Now: $466.57
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    Trane SEN0204 90/250f 1/4"x5" Temperature Sensor

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    MSRP: $55.13
    Now: $42.60
    90/250f 1/4"x5" Temperature Sensor   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $55.13
    Now: $42.60
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    Trane SEN0182 9.75k Ohm Ambient Sensor Assmbly

    Trane

    MSRP: $58.64
    Now: $45.31
    9.75k Ohm Ambient Sensor Assmbly   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements      
    MSRP: $58.64
    Now: $45.31
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    Trane SEN0073 Flame Sensor

    Trane

    MSRP: $231.25
    Now: $178.69
    Flame Sensor   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $231.25
    Now: $178.69
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    Trane SEN0007 Flame Sensor

    Trane

    MSRP: $133.57
    Now: $103.21
    Flame Sensor   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $133.57
    Now: $103.21
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    MSRP: $133.57
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    Trane RES0171 Thermistor Ambient Sensor

    Trane

    MSRP: $16.40
    Now: $12.67
    Thermistor Ambient Sensor   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements      
    MSRP: $16.40
    Now: $12.67
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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.