null

Thermostats / Sensors

Thermostats / Sensors

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    International Comfort Products 3900007301 Air Sensor

    International Comfort Products

    MSRP: $34.91
    Now: $26.98
    International Comfort Products 3900007301 Air 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: $34.91
    Now: $26.98
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $34.91
    Now: $26.98
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    Lochinvar & A.O. Smith 100233591 Immersion Thermostat

    Lochinvar & A.O. Smith

    MSRP: $322.36
    Now: $249.10
    Lochinvar & A.O. Smith 100233591 Immersion 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: $322.36
    Now: $249.10
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $322.36
    Now: $249.10
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    Bosch HVAC 8733968186 Sensor A2L

    Bosch HVAC

    MSRP: $156.83
    Now: $121.19
    Bosch HVAC 8733968186 A2L 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: $156.83
    Now: $121.19
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $156.83
    Now: $121.19
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    Trane SEN1318 Sensor

    Trane

    MSRP: $785.05
    Now: $606.63
    Trane SEN1318 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: $785.05
    Now: $606.63
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $785.05
    Now: $606.63
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    York 025-29924-000 Temp Sensor 50K Ohm

    York

    MSRP: $2,545.74
    Now: $1,967.16
    York 025-29924-000 50K Ohm 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: $2,545.74
    Now: $1,967.16
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $2,545.74
    Now: $1,967.16
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    Venstar VSACCDSEN Air Temperature Sensor

    Venstar

    MSRP: $34.90
    Now: $26.97
    Venstar VSACCDSEN Air Temperature 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: $34.90
    Now: $26.97
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $34.90
    Now: $26.97
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    Aprilaire 6003 Thermostat

    Aprilaire

    MSRP: $335.25
    Now: $259.05
    Aprilaire 6003 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: $335.25
    Now: $259.05
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $335.25
    Now: $259.05
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    Viessmann 7835114 Flow Sensor B2HA 399-530

    Viessmann

    MSRP: $554.68
    Now: $428.62
    Viessmann 7835114 Flow Sensor B2HA 399-530 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: $554.68
    Now: $428.62
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $554.68
    Now: $428.62
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    Peerless Boiler 54299 Kit Pf Supply Sensor/Limit

    Peerless Boiler

    MSRP: $251.94
    Now: $194.68
    Peerless Boiler 54299 Kit Pf Supply Sensor/Limit 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: $251.94
    Now: $194.68
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $251.94
    Now: $194.68
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    Modine 5H0877820003 Pro1 Thermostat 2Stg

    Modine

    MSRP: $364.77
    Now: $281.86
    Modine 5H0877820003 Pro1 Thermostat 2Stg 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: $364.77
    Now: $281.86
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $364.77
    Now: $281.86
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    York S1-025-53176-000 Sensor, Temp, Ambient, 15"

    York

    MSRP: $26.66
    Now: $20.60
    York S1-025-53176-000 Sensor, Temp, Ambient, 15" 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: $26.66
    Now: $20.60
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $26.66
    Now: $20.60
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    Danfoss 063G1609 Sensor MBS1200-6611-XXAC04

    Danfoss

    MSRP: $249.20
    Now: $192.56
    Danfoss 063G1609 Sensor MBS1200-6611-XXAC04 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: $249.20
    Now: $192.56
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $249.20
    Now: $192.56
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    Carrier HH96ZX004 Dissipation Sensor

    Carrier

    MSRP: $205.74
    Now: $158.98
    Carrier HH96ZX004 Dissipation 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: $205.74
    Now: $158.98
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $205.74
    Now: $158.98
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    Johnson Controls NSB8MTN241-0 Temperature Sensor White w/Display/PIR

    Johnson Controls

    MSRP: $322.48
    Now: $249.19
    Johnson Controls NSB8MTN241-0 Temperature Sensor White w/Display/PIR 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: $322.48
    Now: $249.19
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $322.48
    Now: $249.19
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    International Comfort Products 1173697 Defrost Sensor

    International Comfort Products

    MSRP: $31.68
    Now: $24.48
    International Comfort Products 1173697 Defrost 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: $31.68
    Now: $24.48
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $31.68
    Now: $24.48
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    Trane SEN2004 Sensor

    Trane

    MSRP: $318.27
    Now: $245.93
    Trane SEN2004 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: $318.27
    Now: $245.93
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $318.27
    Now: $245.93
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    Automation Components Inc (ACI) A/AN-I-4-GD TempSens AN Immersion 4" GV

    Automation Components Inc (ACI)

    MSRP: $62.60
    Now: $48.37
    Automation Components Inc (ACI) A/AN-I-4-GD TempSens AN Immersion 4" GV The galvanized metal box with well configuration has male 1/2" NPT threads. The sensing element is double encapsulated to avoid sensor failures caused by moisture infiltration. ACI...
    MSRP: $62.60
    Now: $48.37
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $62.60
    Now: $48.37
    Subtotal:
    Add to Cart
  • Furnace part souls images
    Add to Cart
    Quick view

    HTP 7500P-039 Flame Rectification Probe

    HTP

    MSRP: $102.23
    Now: $79.00
    HTP 7500P-039 Flame Rectification Probe 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: $102.23
    Now: $79.00
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $102.23
    Now: $79.00
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    Carrier 33CSCNACHP-01 Comfort Pro Non-Program Thermostat

    Carrier

    MSRP: $340.96
    Now: $263.47
    Carrier 33CSCNACHP-01 Comfort Pro Non-Program 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: $340.96
    Now: $263.47
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $340.96
    Now: $263.47
    Subtotal:
    Add to Cart
  • Furnace part souls images Furnace part souls images
    Add to Cart
    Quick view

    MAMAC Systems TE-703-D-7-A-3 Immersion Temperature Sensor with 10,000 Ohm NTC Thermistor (Type III) Sensor

    MAMAC Systems

    MSRP: $36.30
    Now: $28.05
    MAMAC Systems TE-703-D-7-A-3 Immersion Temperature Sensor with 10,000 Ohm NTC Thermistor (Type III) Sensor  4" Probe Length 1/2"NPT Adapter NEMA 4 Painted Steel Enclosure FurnacePartSource.com Commitment Always Brand-New Genuine Parts In...
    MSRP: $36.30
    Now: $28.05
    Add to Cart Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $36.30
    Now: $28.05
    Subtotal:
    Add to Cart
  • Total: items /

Adding your products to cart

View Cart Continue Shopping

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.