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Thermostats / Sensors

Thermostats / Sensors

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    Honeywell TB6575B1000 120/240V2Pipe Fan Coil Stat 3Spdfn

    Honeywell

    MSRP: $228.74
    Now: $176.75
    Honeywell TB6575B1000 120/240V2Pipe Fan Coil Stat 3Spdfnl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $228.74
    Now: $176.75
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    Honeywell T834L1004 24V Thermostat Off/Cool,Auto/On

    Resideo

    MSRP: $63.31
    Now: $48.92
    Honeywell T834L1004 24V Thermostat Off/Cool,Auto/Onl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $63.31
    Now: $48.92
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    Honeywell T812C1000 24V Heat-Cool Thermostat 50/90 Snap

    Resideo

    MSRP: $41.32
    Now: $31.93
    Honeywell T812C1000 24V Heat-Cool Thermostat 50/90 Snapl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $41.32
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    Honeywell T8034N1007 Horz Thermostat 24V Ht/Off/Cl On/Au

    Resideo

    MSRP: $67.95
    Now: $52.50
    Honeywell T8034N1007 Horz Thermostat 24V Ht/Off/Cl On/Aul  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $67.95
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    Honeywell T7750D1004 Elec Temp/Humid Sensor 5To95%Rh

    Honeywell

    MSRP: $64.33
    Now: $49.71
    Honeywell T7750D1004 Elec Temp/Humid Sensor 5To95%Rhl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $64.33
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    Honeywell T775-SENS-WR Water Resistant Sensor, 6' Leads

    Honeywell

    MSRP: $124.26
    Now: $96.02
    Honeywell T775-SENS-WR Water Resistant Sensor, 6' Leadsl   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements    
    MSRP: $124.26
    Now: $96.02
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    Honeywell T775-SENS-STRAP 1097Ohm Strap-on Sensor

    Honeywell

    MSRP: $103.27
    Now: $79.80
    Honeywell T775-SENS-STRAP 1097Ohm Strap-on Sensorl   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements    
    MSRP: $103.27
    Now: $79.80
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    Honeywell T775-SENS-OAT Outdoor Air Tempurature Sensor 1097Ohms

    Honeywell

    MSRP: $124.26
    Now: $96.02
    Honeywell T775-SENS-OAT Outdoor Air Tempurature Sensor 1097Ohmsl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $124.26
    Now: $96.02
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    Honeywell T7022A1010 60/90F Return Air Sensor

    Honeywell

    MSRP: $364.04
    Now: $281.30
    Honeywell T7022A1010 60/90F Return Air Sensorl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $364.04
    Now: $281.30
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    Honeywell T651A3026 Linevolt 7-28C Spdt W/Thermometer

    Honeywell

    MSRP: $341.50
    Now: $263.89
    Honeywell T651A3026 Linevolt 7-28C Spdt W/Thermometerl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $341.50
    Now: $263.89
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    Honeywell T6054A1005 Ind'L Thermostat -30/100F Spdt,Line

    Honeywell

    MSRP: $375.03
    Now: $289.79
    Honeywell T6054A1005 Ind'L Thermostat -30/100F Spdt,Linel  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $375.03
    Now: $289.79
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    Honeywell T498B1553 Elec.Ht Thermostat W/O T-Meter Dpst

    Resideo

    MSRP: $69.42
    Now: $53.64
    Honeywell T498B1553 Elec.Ht Thermostat W/O T-Meter Dpstl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $69.42
    Now: $53.64
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    Honeywell T498A1810 Elec.Ht.Thermostat 40-80F No Thermometer

    Honeywell

    MSRP: $60.88
    Now: $47.05
    Honeywell T498A1810 Elec.Ht.Thermostat 40-80F No Thermometerl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $60.88
    Now: $47.05
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    Honeywell T498A1778 Elec.Ht. Thermostat Spst 40-80F

    Resideo

    MSRP: $73.31
    Now: $56.65
    Honeywell T498A1778 Elec.Ht. Thermostat Spst 40-80Fl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $73.31
    Now: $56.65
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    Honeywell T451B3004 Med Dty 120V 50-86F Pos Off

    Honeywell

    MSRP: $65.98
    Now: $50.99
    Honeywell T451B3004 Med Dty 120V 50-86F Pos Offl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $65.98
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    Honeywell T4398A1021 Spst Dual Diaph.Electric Thermostat-Whit

    Resideo

    MSRP: $55.59
    Now: $42.95
    Honeywell T4398A1021 Spst Dual Diaph.Electric Thermostat-Whitl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $55.59
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    Honeywell T410B1004 Dpst Elec Ht Thermostat 40-80F

    Resideo

    MSRP: $37.41
    Now: $28.90
    Honeywell T410B1004 Dpst Elec Ht Thermostat 40-80Fl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $37.41
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    Honeywell T410A1021 Spst 5-25C White Bsbrd Thermostat

    Honeywell

    MSRP: $31.33
    Now: $24.21
    Honeywell T410A1021 Spst 5-25C White Bsbrd Thermostatl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $31.33
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    Honeywell T4054B1016 Cooling Thermostat 35/100F Spst

    Honeywell

    MSRP: $409.15
    Now: $316.16
    Honeywell T4054B1016 Cooling Thermostat 35/100F Spstl  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $409.15
    Now: $316.16
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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.