Best 2 Wire Smart Thermostat Heat Only WIFI No C Wire Required in 2025
Updated on August 2025
#1
Recommended
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- Wide compatibility with C-wire adapter; not supported for 2-wire systems.
- Saves over 23% energy for a comfortable environment.
- Includes a free temperature sensor for better functionality.
- Features 7-day programmability with 4 modes for automated temperature adjustments.
- Allows remote temperature control from anywhere.
- Compatible with Alexa and Google Home for hands-free control.
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- Wide compatibility with C-wire adapter; not supported for 2-wire systems.
- Saves over 23% energy for a comfortable environment.
- Includes a free temperature sensor for better functionality.
- Features 7-day programmability with 4 modes for automated temperature adjustments.
- Allows remote temperature control from anywhere.
- Compatible with Alexa and Google Home for hands-free control.
#2
Value for Money
40% Off
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- Sensi prioritizes your privacy by not sharing personal information with third parties.
- Designed for straightforward DIY installation with built-in leveling, illuminated terminals, and app-guided steps; compatible with most home HVAC systems requiring a common wire.
- Potentially reduce HVAC energy costs by approximately 23% with the ENERGY STAR-rated Sensi thermostat's scheduling and remote access features.
- Features a modern, easy-to-read color display with temperature information, available in black, white, and silver to fit various home styles.
- Control your thermostat remotely via the Sensi app on both Android and iOS devices.
- Provides insights into HVAC performance and efficiency through usage reports, equipment alerts, and maintenance reminders.
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- Sensi prioritizes your privacy by not sharing personal information with third parties.
- Designed for straightforward DIY installation with built-in leveling, illuminated terminals, and app-guided steps; compatible with most home HVAC systems requiring a common wire.
- Potentially reduce HVAC energy costs by approximately 23% with the ENERGY STAR-rated Sensi thermostat's scheduling and remote access features.
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#3
12% Off
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- Compatible with most heating and cooling systems, including conventional, heat pump, and dual fuel.
- Installation takes about 20 minutes with access to online guides and videos.
- Remote and voice control capabilities through Vine Thermostat App, Smart Life App, Alexa, and Google Home.
- 7-day programmable scheduling with Auto Home/Away mode for energy efficiency and comfort.
- Includes features like temperature alerts, filter change reminders, and child lock for added convenience.
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- Compatible with most heating and cooling systems, including conventional, heat pump, and dual fuel.
- Installation takes about 20 minutes with access to online guides and videos.
- Remote and voice control capabilities through Vine Thermostat App, Smart Life App, Alexa, and Google Home.
- 7-day programmable scheduling with Auto Home/Away mode for energy efficiency and comfort.
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#4
17% Off
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- Verify compatibility with your heating and cooling system at support.edgeant.com/check/
- Not compatible with 2-Wire heat only, electric baseboard heat, high voltage systems, and millivolt systems.
- Works with 90% of heating and cooling systems, requiring a Common wire (C-Wire), including natural gas and electric sources.
- Compatible with most 24V systems like furnaces and heat pumps, requires a C-Wire and works only with 2.4GHz WiFi.
- Reduces heating and cooling costs by over 25% annually, with savings tracked through the Smart Life app.
- Includes a programmable schedule, temperature alerts, filter change reminders, and child lock for added convenience.
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- Verify compatibility with your heating and cooling system at support.edgeant.com/check/
- Not compatible with 2-Wire heat only, electric baseboard heat, high voltage systems, and millivolt systems.
- Works with 90% of heating and cooling systems, requiring a Common wire (C-Wire), including natural gas and electric sources.
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#5
28% Off
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- Easy DIY installation with built-in level and clear instructions for compatibility with standard HVAC systems
- Requires a common wire (C-Wire) for heat pump and heat/cool systems; typically not needed for other systems
- Designed to reduce HVAC energy consumption by approximately 23% with features like flexible scheduling and remote access
- Prioritizes user privacy by not selling personal information or using thermostat data for advertising
- Allows remote control via a highly-rated mobile app for both Android and iOS devices
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- Easy DIY installation with built-in level and clear instructions for compatibility with standard HVAC systems
- Requires a common wire (C-Wire) for heat pump and heat/cool systems; typically not needed for other systems
- Designed to reduce HVAC energy consumption by approximately 23% with features like flexible scheduling and remote access
- Prioritizes user privacy by not selling personal information or using thermostat data for advertising
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#6
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- Remote access via WiFi using the First Alert app, compatible with Matter, Amazon Alexa, Google Assistant, and Apple HomeKit.
- Energy Star certified with scheduled programming and auto-away capabilities, with various programming options including non-programmable settings.
- Facilitates energy savings through program participation and potential rebates.
- Key features include WiFi connectivity, custom display options, flexible scheduling, and filter change reminders.
- Compatible with up to 2 heat/2 cool conventional systems and various heating types, excluding electric baseboard heat.
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- Remote access via WiFi using the First Alert app, compatible with Matter, Amazon Alexa, Google Assistant, and Apple HomeKit.
- Energy Star certified with scheduled programming and auto-away capabilities, with various programming options including non-programmable settings.
- Facilitates energy savings through program participation and potential rebates.
- Key features include WiFi connectivity, custom display options, flexible scheduling, and filter change reminders.
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#7
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- Easy transition from traditional to smart thermostat, aimed at energy reduction.
- Compatible with Echo devices and Amazon Smart Air Quality Monitor for temperature sensing.
- Email from Amazon post-purchase with information on potential energy provider rebates.
- ENERGY STAR certified, potentially saving users an average of $50 on annual energy expenses.
- Alexa can automate your preferred temperature settings based on your presence.
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- Easy transition from traditional to smart thermostat, aimed at energy reduction.
- Compatible with Echo devices and Amazon Smart Air Quality Monitor for temperature sensing.
- Email from Amazon post-purchase with information on potential energy provider rebates.
- ENERGY STAR certified, potentially saving users an average of $50 on annual energy expenses.
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#8
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- ENERGY STAR certified for energy efficiency, offering personalized heating and cooling insights.
- Remote control via app and compatibility with smart home devices including Alexa and Google Assistant for flexible home automation.
- Customizable high-definition color display for personalized aesthetics.
- Displays indoor/outdoor temperature, humidity, and daily weather forecasts on the home screen.
- Compatible with various heating systems but not suitable for electric baseboard heat; ensure compatibility and C-wire requirement before purchase.
- Fan control options include constant, automatic, or circulating modes for tailored air circulation.
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- ENERGY STAR certified for energy efficiency, offering personalized heating and cooling insights.
- Remote control via app and compatibility with smart home devices including Alexa and Google Assistant for flexible home automation.
- Customizable high-definition color display for personalized aesthetics.
- Displays indoor/outdoor temperature, humidity, and daily weather forecasts on the home screen.
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#9
16% Off
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- Customers saved 8-16% on heating and cooling bills using the scheduling feature, with actual savings varying based on usage.
- Eligible users can check for energy savings rebates and participate in utility demand response programs.
- The thermostat offers 7-day flexible scheduling and location-based temperature control using geofence technology.
- Auto mode adjusts temperatures while home and saves energy when away.
- ENERGY STAR certified with monthly energy reports and personalized tips for reducing energy use.
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- Customers saved 8-16% on heating and cooling bills using the scheduling feature, with actual savings varying based on usage.
- Eligible users can check for energy savings rebates and participate in utility demand response programs.
- The thermostat offers 7-day flexible scheduling and location-based temperature control using geofence technology.
- Auto mode adjusts temperatures while home and saves energy when away.
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#10
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- ENERGY STAR certified thermostat designed to reduce HVAC energy costs by approximately 23% through features like geofencing and flexible scheduling.
- Quick installation in 30 minutes or less with built-in level and app guidance, fitting standard thermostat size to avoid extra wall work.
- Compatible with smart home systems including Amazon Alexa, Google Assistant, Apple HomeKit (requires c-wire), and Samsung SmartThings.
- Access detailed usage reports for heating, cooling, and fan runtime via the app, tracking both current and historical data.
- Control home temperature remotely using the Sensi mobile app on Android and iOS devices.
- Receive smart alerts for extreme temperature and humidity conditions in your home.
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- ENERGY STAR certified thermostat designed to reduce HVAC energy costs by approximately 23% through features like geofencing and flexible scheduling.
- Quick installation in 30 minutes or less with built-in level and app guidance, fitting standard thermostat size to avoid extra wall work.
- Compatible with smart home systems including Amazon Alexa, Google Assistant, Apple HomeKit (requires c-wire), and Samsung SmartThings.
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