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Thermostats / Sensors

Thermostats / Sensors

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  • Furnace part souls images

    Siemens 192-262 Thermostat Cover Con/ Con/ Con Logo

    Siemens

    MSRP: $21.05
    Now: $15.95
    Siemens 192-262 Thermostat Cover Con/ Con/ Con Logo  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $21.05
    Now: $15.95
    Qty in Cart: 0
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    MSRP: $21.05
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    Siemens 192-260 Thermostat Cover Exp/ Exp/ Exp Logo

    Siemens Building Technology

    MSRP: $23.08
    Now: $17.49
    Siemens 192-260 Thermostat Cover Exp/ Exp/ Exp Logo  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $23.08
    Now: $17.49
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    MSRP: $23.08
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    Siemens 192-257W Thermostat Cover Con/ Con/ Con No Logo

    Siemens

    MSRP: $16.94
    Now: $12.85
    Siemens 192-257W Thermostat Cover Con/ Con/ Con No Logo  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $16.94
    Now: $12.85
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    MSRP: $16.94
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    Siemens 192-257 Thermostat Cover Con/ Con/ Con No Logo

    Siemens

    MSRP: $20.64
    Now: $15.64
    Siemens 192-257 Thermostat Cover Con/ Con/ Con No Logo  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $20.64
    Now: $15.64
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    MSRP: $20.64
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    Siemens 192-256W White Cover, Concealed Stpt & Therm

    Siemens Building Technology

    MSRP: $26.37
    Now: $20.37
    Siemens 192-256W White Cover, Concealed Stpt & Therm  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $26.37
    Now: $20.37
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    MSRP: $26.37
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    Siemens 192-254 Thermostat Cover Con/ Exp/ Con Logo

    Siemens

    MSRP: $21.05
    Now: $15.95
    Siemens 192-254 Thermostat Cover Con/ Exp/ Con Logo  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $21.05
    Now: $15.95
    Qty in Cart: 0
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    MSRP: $21.05
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    Siemens 192-252W Thermostat Cover-White

    Siemens Building Technology

    MSRP: $23.23
    Now: $17.95
    Siemens 192-252W Thermostat Cover-White   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements    
    MSRP: $23.23
    Now: $17.95
    Qty in Cart: 0
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    MSRP: $23.23
    Now: $17.95
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    Siemens 192-250 Thermostat Cover Exp Con/Exp Logo

    Siemens Building Technology

    MSRP: $23.23
    Now: $17.95
    Siemens 192-250 Thermostat Cover Exp Con/Exp Logo  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $23.23
    Now: $17.95
    Qty in Cart: 0
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    MSRP: $23.23
    Now: $17.95
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    Siemens 192-226 Rm Thermostat D/N/V 7/30C Da/Da

    Siemens

    MSRP: $314.77
    Now: $238.46
    Siemens 192-226 Rm Thermostat D/N/V 7/30C Da/Da  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $314.77
    Now: $238.46
    Qty in Cart: 0
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    MSRP: $314.77
    Now: $238.46
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    Siemens 192-224 Rm Thermostat D/N 7/30C Da/Da

    Siemens Building Technology

    MSRP: $338.56
    Now: $261.62
    Siemens 192-224 Rm Thermostat D/N 7/30C Da/Da  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $338.56
    Now: $261.62
    Qty in Cart: 0
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    MSRP: $338.56
    Now: $261.62
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    Siemens 192-223 Rm Thermostat 7/30C 2 Pipe Ra

    Siemens Building Technology

    MSRP: $191.94
    Now: $148.32
    Siemens 192-223 Rm Thermostat 7/30C 2 Pipe Ra  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $191.94
    Now: $148.32
    Qty in Cart: 0
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    MSRP: $191.94
    Now: $148.32
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    Siemens 192-222 Rm Thermostat 7/30C 2 Pipe Da

    Siemens Building Technology

    MSRP: $191.94
    Now: $148.32
    Siemens 192-222 Rm Thermostat 7/30C 2 Pipe Da  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $191.94
    Now: $148.32
    Qty in Cart: 0
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    MSRP: $191.94
    Now: $148.32
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    Siemens 192-220 Rm Thermostat Ssp 7/30C 1Pipe Da

    Siemens Building Technology

    MSRP: $159.93
    Now: $123.59
    Siemens 192-220 Rm Thermostat Ssp 7/30C 1Pipe Da  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $159.93
    Now: $123.59
    Qty in Cart: 0
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    MSRP: $159.93
    Now: $123.59
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    Siemens 192-210 Rm Thermostat H/C 45/85F Ra/Ra

    Siemens

    MSRP: $282.45
    Now: $213.98
    Siemens 192-210 Rm Thermostat H/C 45/85F Ra/Ra   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements    
    MSRP: $282.45
    Now: $213.98
    Qty in Cart: 0
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    MSRP: $282.45
    Now: $213.98
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    Siemens 192-209 Rm Thermostat H/C 45/85F Ra/Da

    Siemens Building Technology

    MSRP: $311.90
    Now: $241.01
    Siemens 192-209 Rm Thermostat H/C 45/85F Ra/Da  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $311.90
    Now: $241.01
    Qty in Cart: 0
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    MSRP: $311.90
    Now: $241.01
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    Siemens 192-208K H/C 45/85F Da/Ra W/Lrg Knob

    Siemens

    MSRP: $320.55
    Now: $243.20
    Siemens 192-208K H/C 45/85F Da/Ra W/Lrg Knob  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $320.55
    Now: $243.20
    Qty in Cart: 0
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    MSRP: $320.55
    Now: $243.20
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    Siemens 192-208 Rm Thermostat H/C 45/85F Da/Ra

    Siemens Building Technology

    MSRP: $311.90
    Now: $241.01
    Siemens 192-208 Rm Thermostat H/C 45/85F Da/Ra  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $311.90
    Now: $241.01
    Qty in Cart: 0
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    MSRP: $311.90
    Now: $241.01
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    Siemens 192-207 Rm Thermostat H/C 45/85F Da/Da

    Siemens Building Technology

    MSRP: $311.90
    Now: $241.01
    Siemens 192-207 Rm Thermostat H/C 45/85F Da/Da  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $311.90
    Now: $241.01
    Qty in Cart: 0
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    MSRP: $311.90
    Now: $241.01
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    Siemens 192-206 Thermostat, D/N, Da/Da, W/Nit Vent, 45-85

    Siemens Building Technology

    MSRP: $354.55
    Now: $273.97
    Siemens 192-206 Thermostat, D/N, Da/Da, W/Nit Vent, 45-85  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $354.55
    Now: $273.97
    Qty in Cart: 0
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    MSRP: $354.55
    Now: $273.97
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  • Furnace part souls images

    Siemens 192-201 Rm Thermostat Ssp 45/85F 1Pipe Ra

    Siemens Building Technology

    MSRP: $159.93
    Now: $123.59
    Siemens 192-201 Rm Thermostat Ssp 45/85F 1Pipe Ra  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $159.93
    Now: $123.59
    Qty in Cart: 0
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    MSRP: $159.93
    Now: $123.59
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Adding your products to cart

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.