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Thermostats / Sensors

Thermostats / Sensors

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    Rheem Water Heater Parts Gas Valve & Thermostat, Part # SP20167C

    Rheem-Ruud

    MSRP: $359.91
    Now: $278.12
    Rheem Water Heater Part SP20167C; LP Gas Valve and Thermostat   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No...
    MSRP: $359.91
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    White-Rodgers Water Heater Thermostat Control # 37C73U-168

    Copeland Comfort Control (White Rodgers)

    MSRP: $228.11
    Now: $176.27
    White-Rodgers® Water Heater Thermostat Control # 37C73U-168; Natural Gas Water Heater Valve; 70/160F(A.O.Smith); Comes with Installation Manual and Technical Sheet; Backed by a One Year Warranty;
    MSRP: $228.11
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    Carrier Defrost Thermostat # HH18HA282

    Carrier

    MSRP: $56.00
    Now: $43.27
    Carrier® Defrost Thermostat # HH18HA282; Defrost Thermostat; Backed by One Year Warranty   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts...
    MSRP: $56.00
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    Carrier Defrost Stat; Part # HH18HA280

    Carrier

    MSRP: $40.90
    Now: $31.61
    Carrier® Part # HH18HA280; DEFROST STAT L80-50F; All parts backed by a One Year Manufacturer Warranty.   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New...
    MSRP: $40.90
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    Venstar VST1050 (Direct Replacement for TSTATCCPB501) Venstar Tstat 2H/2C 5+2 Day

    Venstar

    MSRP: $88.41
    Now: $68.31
    Carrier® Part # VST1050; Carrier Products Venstar Thermostat; 2H/2C 5+2 Da; All Parts Backed by a One Year Manufacturer Warranty; Comes with Installation Manual and User Guide This is the Direct...
    MSRP: $88.41
    Now: $68.31
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    Honeywell Premier White Round Thermostat # T87K1007

    Resideo

    MSRP: $73.26
    Now: $56.61
    Honeywell® # T87K1007; Premier White 24 Volt Mercury Free Heat Only Round Thermostat, 40-90F for Conventional/Gas, Oil, Forced Warm Air, Steam and Gravity 2&3 Wire Applications, (R,W,Y); Comes with...
    MSRP: $73.26
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    Trane Replacement Kit/Thermostat # KIT9183

    Trane

    MSRP: $772.28
    Now: $596.76
    From Trane® Parts. Replacement Kit for Macon Thermostat. Trane® Part # KIT9182   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts -...
    MSRP: $772.28
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    White-Rodgers Thermostat 1F56N-444

    Copeland Comfort Control (White Rodgers)

    MSRP: $64.78
    Now: $50.06
    White-Rodgers® Thermostat 24v 1H1C SnapAction Horizontal, Please note: the White-Rodgers® Thermostat # 1F56N-444 replaces the now obsolete WR # 1F56-301
    MSRP: $64.78
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    Fenwal 12-F27121-000-06 Sensor

    Fenwal

    MSRP: $462.16
    Now: $357.13
    Fenwal 12-F27121-000-06 Sensor Detect-A-Fire 325F FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements
    MSRP: $462.16
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    Fenwal 12-E27121-000-04 (Replaces 12-X27121-000-190) Detect-A-Fire w/ Fast Response Time Index

    Fenwal

    MSRP: $522.97
    Now: $404.11
    Fenwal 12-E27121-000-04  (Replacement for 12-X27121-000-190) 190 degrees F, Close on Rise, White Color Coding, Vertical Mount, Hex Brass Mounting Head, 300 Stainless Steel Shell, Detect-A-Fire w/...
    MSRP: $522.97
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    Fenwal 11-030002-000 Sensor

    Fenwal

    MSRP: $86.06
    Now: $66.50
    Fenwal 11-030002-000 Sensor  50-600f FLUSH MT TEMP    FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order...
    MSRP: $86.06
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    Fenwal 05-100000-432 (Minimum purchase 10 ea) Ignitor Sensor

    Fenwal

    MSRP: $52.72
    Now: $39.94
    Fenwal 05-100000-432  (Minimum purchase 10 ea) Ignitor Sensor FurnacePartSource.com Commitment
    MSRP: $52.72
    Now: $39.94
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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.