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Thermostats / Sensors

Thermostats / Sensors

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    RBI Boiler 62101079 AUTOMATIC SAFETY THERMOSTAT

    Rbi Boiler

    MSRP: $24.92
    Now: $18.88
    RBI Boiler 62101079 AUTOMATIC SAFETY 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: $24.92
    Now: $18.88
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    Honeywell TC500A-N (Replaces T7350H1009, T7350H1009, T7350D1008 & 2ET077001124 ) WIRELESS COMMERCIAL THERMOSTAT

    Honeywell

    MSRP: $633.40
    Now: $489.45
    Honeywell TC500A-N (Replaces T7350H1009, T7350H1009, T7350D1008 & 2ET077001124 ) WIRELESS COMMERCIAL THERMOSTAT AHU/RTU This is the Direct Replacement for T7350H1009This is the Direct Replacement for T7350D1008This is the Direct...
    MSRP: $633.40
    Now: $489.45
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    Trane BAYSENS037A (Replaces SEN1178) 3% DUCT MOUNT HUMIDITY W/ TEMP

    Trane

    MSRP: $1,016.61
    Now: $785.57
    Trane BAYSENS037A (Replaces SEN1178) 3% DUCT MOUNT HUMIDITY W/ TEMP This is Identical to SEN1178 FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM...
    MSRP: $1,016.61
    Now: $785.57
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    Trane SEN1829 Mixed Air Sensor -40 TO 65C

    Trane

    MSRP: $108.04
    Now: $83.49
    Trane SEN1829 Mixed Air Sensor -40 TO 65C 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: $108.04
    Now: $83.49
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    Danfoss 084Z7078 INSERTION TEMP SENSOR 88-100mm

    Danfoss

    MSRP: $404.27
    Now: $306.26
    Danfoss 084Z7078 INSERTION TEMP SENSOR 88-100mm 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: $404.27
    Now: $306.26
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    Johnson Controls T-4000-2139 Beige Plastic Cover for Horizontal Mounted Thermostats

    Johnson Controls

    MSRP: $47.34
    Now: $36.58
    Johnson Controls T-4000-2139 Beige Plastic Cover for Horizontal Mounted Thermostats Johnson Controls Logo No Thermometer and No Set Point Windows FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts...
    MSRP: $47.34
    Now: $36.58
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    Trane SEN02929 THERMISTOR SENSOR

    Trane

    MSRP: $113.47
    Now: $87.68
    Trane SEN02929 THERMISTOR 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: $113.47
    Now: $87.68
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    Honeywell Analytics MPD-UTCB1 XNX MPD Catalytic Sensor 0-100

    Honeywell Analytics

    MSRP: $1,128.19
    Now: $854.69
    Honeywell Analytics MPD-UTCB1 XNX MPD Catalytic Sensor 0-100 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: $1,128.19
    Now: $854.69
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    Honeywell Analytics MPD-AMCB1 XNX MPD SESNOR, M25 ATEX/IEC

    Honeywell Analytics

    MSRP: $1,389.96
    Now: $1,053.00
    Honeywell Analytics MPD-AMCB1 XNX MPD SESNOR M25 ATEX/IEC 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: $1,389.96
    Now: $1,053.00
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    Honeywell Analytics 1226-0350 Sensor Retainer

    Honeywell Analytics

    MSRP: $128.17
    Now: $99.04
    Honeywell Analytics 1226-0350 Sensor Retainer 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: $128.17
    Now: $99.04
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    Schneider Electric (Micronet) MN-S3HT Temp & Hum Adjustable Sensor W/LCD&O/R

    Schneider Electric (Micronet)

    MSRP: $1,511.35
    Now: $1,167.86
    Schneider Electric (Micronet) MN-S3HT Temp & Hum Adjustable Sensor W/LCD&O/R FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order...
    MSRP: $1,511.35
    Now: $1,167.86
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    Rheem-Ruud SP21032 (Replaces SP11231) THERMOSTAT

    Rheem-Ruud

    MSRP: $40.82
    Now: $31.54
    Rheem-Ruud SP21032 (Replaces SP11231) THERMOSTAT This is the Direct Replacement for SP11231 FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM...
    MSRP: $40.82
    Now: $31.54
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    Johnson Controls TE-6311M-1 Duct Sensor, 8" Length, Nickel Element, 1 K Ohm

    Johnson Controls

    MSRP: $36.86
    Now: $28.48
    Johnson Controls TE-6311M-1 Duct Sensor 8" Length Nickel Element 1 K Ohm FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order...
    MSRP: $36.86
    Now: $28.48
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    Lennox 24Z13 (Replaces 51M33) Thermostat BB 1230 Non-Prog 2H/1C

    Lennox

    MSRP: $72.70
    Now: $56.18
    Lennox 24Z13 (Replaces 51M33) Thermostat Braeburn 1230 Non Programmable 2 Heat / 1 Cool   This is the Direct Replacement for 51M33 (may require re-wiring) FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock...
    MSRP: $72.70
    Now: $56.18
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    Burnham New Yorker 109645-01 Limit Sensor

    Burnham Boiler

    MSRP: $70.49
    Now: $54.47
    Burnham New Yorker 109645-01 Limit 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...
    MSRP: $70.49
    Now: $54.47
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    Reznor 195292 Flame Sensor

    Reznor

    MSRP: $79.27
    Now: $61.25
    Reznor 195292 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: $79.27
    Now: $61.25
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    Danfoss 060G5828 Sensor MBS 3000-8331-A3AC04-0

    Danfoss

    MSRP: $894.38
    Now: $691.11
    Danfoss 060G5828 Sensor MBS 3000-8331-A3AC04-0 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: $894.38
    Now: $691.11
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    Schneider Electric (Micronet) MN-S3-500 Micronet Sensor Set Pt & Override NO COVER

    Schneider Electric (Micronet)

    MSRP: $519.75
    Now: $401.62
    Schneider Electric (Micronet) MN-S3-500 Micronet Sensor Set Pt & Override NO COVER FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order...
    MSRP: $519.75
    Now: $401.62
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    Carrier OP12DA040EE Sensor

    Carrier

    MSRP: $641.29
    Now: $485.83
    Carrier OP12DA040EE 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: $641.29
    Now: $485.83
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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.