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Thermostats / Sensors

Thermostats / Sensors

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    Fenwal 12-E27120-022-04 190 degrees F, Open on Rise, Detect-a-fire

    Fenwal

    MSRP: $451.36
    Now: $341.94
    Fenwal 12-E27120-022-04 190 degrees F, Open on Rise, Detect-a-fire White Color Coding, Vertical Mount, Hex 300 Stainless Steel Mounting Head, 300 Stainless Steel Shell, Detect-A-Fire with Fast Response Time Index and +7 degrees F/-8 degrees F...
    MSRP: $451.36
    Now: $341.94
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    York 025-53140-000 AMBIENT TEMP SENSOR

    York

    MSRP: $205.26
    Now: $158.61
    York 025-53140-000 AMBIENT TEMP SENSOR   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: $205.26
    Now: $158.61
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    Climate Master A9155744 (replaces ATA22U01)T-Stat Assy

    Climatemaster

    MSRP: $615.80
    Now: $475.84
    Climate Master A9155744 (replaces ATA22U01) T-Stat Assy Molex plug included, not available separate FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order...
    MSRP: $615.80
    Now: $475.84
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    York 325-47588-006 (Replaces 025-46044-006) Liquid Level Sensor Kit 6"

    York

    MSRP: $3,360.08
    Now: $2,596.42
    York 325-47588-006 (Replaces 025-46044-006)  Liquid Level Sensor Kit 6" This is the Direct Replacement for 025-46044-006 FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when...
    MSRP: $3,360.08
    Now: $2,596.42
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    York 025-53145-000 (Replaces 025-52739-000) Enter/Leave Water Temp Sensor

    York

    MSRP: $280.50
    Now: $216.75
    York 025-53145-000 (Replaces 025-52739-000) Enter/Leave Water Temp Sensor This is the Direct Replacement for 025-52739-000 FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered...
    MSRP: $280.50
    Now: $216.75
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    ClimateMaster ASW018STC (Replaces ASW008STC) Thermostat

    Climatemaster

    MSRP: $301.70
    Now: $233.13
    ClimateMaster ASW018STC Thermostat This is the Direct Replacement for ASW008STC FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements...
    MSRP: $301.70
    Now: $233.13
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    RBI Boiler 63502062 (Replaces 62660038 and 61212014) Flow Sensor

    Rbi Boiler

    MSRP: $251.56
    Now: $194.39
    RBI Boiler 63502062 Flow Sensor This is the Direct Replacement for 61212014 This is the Direct Replacement for 62660038  FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when...
    MSRP: $251.56
    Now: $194.39
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    Utica-Dunkirk 121000007 (Replaces THT2615) Thermostat 60/93f 240-277V SPDT 36"

    Utica-Dunkirk

    MSRP: $98.90
    Now: $76.42
    Utica-Dunkirk 121000007 (Replaces THT2615) Thermostat 60/93f 240-277V SPDT 36" This is Identical to THT2615 FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM...
    MSRP: $98.90
    Now: $76.42
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    Daikin-McQuay 4ELN8872 Thermostat/Timer Defrost Control

    Daikin-McQuay

    MSRP: $594.58
    Now: $450.44
    Daikin-McQuay 4ELN8872 Thermostat/Timer Defrost Control  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: $594.58
    Now: $450.44
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    Copeland Comfort Control (White Rodgers) 1F78-151 (Replaces 9600) Programmable Thermostat

    Copeland Comfort Control (White Rodgers)

    MSRP: $60.98
    Now: $47.12
    Copeland Comfort Control (White Rodgers) 1F78-151 (Replaces 9600) Programmable Thermostat 5/2 24V HT/CL This is the Direct Replacement for 9600 FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts...
    MSRP: $60.98
    Now: $47.12
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    Daikin-McQuay 107201601 Sensor 10k 80" Lead

    Daikin-McQuay

    MSRP: $51.25
    Now: $39.60
    Daikin-McQuay 107201601 Sensor 10k 80" Lead  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: $51.25
    Now: $39.60
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    Trane SEN02528 Flame Sensor

    Trane

    MSRP: $172.42
    Now: $133.24
    Trane SEN02528 Flame Sensor  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: $172.42
    Now: $133.24
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    MSRP: $172.42
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    Schneider Electric (Barber Colman) TC-2931 Changeover Thermostat, Strap On Style

    Schneider Electric (Barber Colman)

    MSRP: $73.41
    Now: $56.72
    Schneider Electric (Barber Colman) TC-2931 Changeover Thermostat, Strap On Style Summer/Winter 75 Degree Approximate Fixed Setpoint 15 Degree Approximate Differential 90 Degree Minimum Hot Water Temperature 60 Degree Max Chilled Water Temperature ...
    MSRP: $73.41
    Now: $56.72
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    Carrier SYSTXCCITC01-C Infinity WiFi Touch Screen

    Carrier

    MSRP: $1,728.97
    Now: $1,336.02
    Carrier SYSTXCCITC01-C Infinity WiFi Touch Screen 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: $1,728.97
    Now: $1,336.02
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    Rectorseal 96108 AG 1250E Sensor Metal/Plastic

    Rectorseal

    MSRP: $38.64
    Now: $29.86
    Rectorseal 96108 AG 1250E Sensor Metal/Plastic  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: $38.64
    Now: $29.86
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    Bard HVAC 8403-038BX Humidistat

    Bard HVAC

    MSRP: $537.01
    Now: $406.83
    Bard HVAC 8403-038BX Humidistat 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: $537.01
    Now: $406.83
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    Lochinvar & A.O. Smith 100109598 TOD Thermostat w/Eco Protector

    Lochinvar & A.O. Smith

    MSRP: $27.03
    Now: $20.48
    Lochinvar & A.O. Smith 100109598 TOD Thermostat w/Eco Protector  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...
    MSRP: $27.03
    Now: $20.48
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    Lochinvar & A.O. Smith 100109597 Thermostat Mounting Bracket

    Lochinvar & A.O. Smith

    MSRP: $32.17
    Now: $24.86
    Lochinvar & A.O. Smith 100109597 Thermostat Mounting Bracket  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: $32.17
    Now: $24.86
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    Johnson Controls TE-631GV-2 Temperature Sensor, Flange Mount, 4" Probe Length, 1K Ohm

    Johnson Controls

    MSRP: $38.64
    Now: $29.86
    Johnson Controls TE-631GV-2 Temperature Sensor  Flange Mount 4" Probe Length Nickel Element 1K Ohm FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No...
    MSRP: $38.64
    Now: $29.86
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    Johnson Controls HL-69158NP-0 Multi-Function Humid w/Temp Sensor Vdc

    Johnson Controls

    MSRP: $463.65
    Now: $358.28
    Johnson Controls HL-69158NP-0 Multi-Function Humid w/Temp Sensor Vdc 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: $463.65
    Now: $358.28
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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.