20 Best Smart Thermostat Without C Wire [2024]

Are you looking for the best Smart Thermostat Without C Wire? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling Smart Thermostat Without C Wire.

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1 Emerson Sensi Wi-Fi Smart Thermostat for Smart Home, DIY, Works With Alexa, Energy Star Certified,... Emerson Sensi Wi-Fi Smart Thermostat for Smart Home, DIY, Works With Alexa, Energy Star...
2 Google Nest Thermostat - Smart Thermostat for Home - Programmable Wifi Thermostat - Charcoal Google Nest Thermostat - Smart Thermostat for Home - Programmable Wifi Thermostat - Charcoal
3 Ecobee3 Lite SmartThermostat, Black Ecobee3 Lite SmartThermostat, Black
4 Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy... Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy...
5 C Wire Adapter 24 Volt Transformer Compatible with Nest Honeywell Ecobee Emerson Sensi Smart WiFi... C Wire Adapter 24 Volt Transformer Compatible with Nest Honeywell Ecobee Emerson Sensi Smart WiFi...
6 Honeywell Home RCHT8610WF T5 Smart Thermostat Energy Star Wi-Fi Programmable Touchscreen Alexa Ready... Honeywell Home RCHT8610WF T5 Smart Thermostat Energy Star Wi-Fi Programmable Touchscreen Alexa...
7 Emerson Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy... Emerson Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa,...
8 Honeywell Home RTH8560D 7 Day Programmable Touchscreen Thermostat Honeywell Home RTH8560D 7 Day Programmable Touchscreen Thermostat
9 Google Nest Power Connector - Nest Thermostat C Wire Adapter - C Wire Adapter for Smart Thermostat -... Google Nest Power Connector - Nest Thermostat C Wire Adapter - C Wire Adapter for Smart Thermostat...
10 ecobee3 Smarter Wi-Fi Thermostat with Remote Sensor, 2nd Generation ecobee3 Smarter Wi-Fi Thermostat with Remote Sensor, 2nd Generation
11 Honeywell Home T9 WiFi Smart Thermostat, Smart Room Sensor Ready, Touchscreen Display, Alexa and... Honeywell Home T9 WiFi Smart Thermostat, Smart Room Sensor Ready, Touchscreen Display, Alexa and...
12 Honeywell Home RTH7600D 7-Day Programmable Touchscreen Thermostat Honeywell Home RTH7600D 7-Day Programmable Touchscreen Thermostat
13 Emerson F61-2663 Wall Plate for Sensi Wi-Fi Programmable Thermostat, White Emerson F61-2663 Wall Plate for Sensi Wi-Fi Programmable Thermostat, White
14 EMERSON Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy... EMERSON Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa,...
15 Google Nest Thermostat E - Smart Thermostat + Google Nest Temperature Sensor Bundle - White Google Nest Thermostat E - Smart Thermostat + Google Nest Temperature Sensor Bundle - White
16 Honeywell Home RTH6360D1002 5-2 Day Programmable Thermostat Honeywell Home RTH6360D1002 5-2 Day Programmable Thermostat
17 Honeywell Home T9 WiFi Smart Thermostat with 1 Smart Room Sensor, Touchscreen Display, Alexa and... Honeywell Home T9 WiFi Smart Thermostat with 1 Smart Room Sensor, Touchscreen Display, Alexa and...
18 Emerson Sensi Wi-Fi Smart Thermostat for Smart Home, Pro Version, Works with Alexa, Energy Star... Emerson Sensi Wi-Fi Smart Thermostat for Smart Home, Pro Version, Works with Alexa, Energy Star...
19 Honeywell Home C-Wire Adapter for Wi-Fi Thermostats THP9045A1098 Honeywell Home C-Wire Adapter for Wi-Fi Thermostats THP9045A1098
20 Sensi Touch Smart Thermostat by Emerson with Touchscreen Color Display, Programmable, Wi-Fi, Mobile... Sensi Touch Smart Thermostat by Emerson with Touchscreen Color Display, Programmable, Wi-Fi,...
Bestseller No. 1
Emerson Sensi Wi-Fi Smart Thermostat for Smart Home, DIY, Works With Alexa, Energy Star Certified,...
  • PRIVACY PROTECTION*: Sensi won’t sell your personal information to third parties
  • SAVE ABOUT 23% ON HVAC ENERGY*: The ENERGY STAR-certified Sensi smart thermostat can help you save energy with features like flexible scheduling,...
  • EASY DIY INSTALLATION: Use the built-in level and step-by-step app instructions for a quick installation. Works with HVAC equipment found in most...
  • SMART MAINTENANCE: Sensi can help monitor the performance and efficiency of your HVAC system by delivering valuable usage reports, alerts about your...
  • SIMPLE CONFIGURATION: Looks and feels like a thermostat. Has buttons and fits the same space as a traditional thermostat so you don’t have to patch...
SaleBestseller No. 2
Google Nest Thermostat - Smart Thermostat for Home - Programmable Wifi Thermostat - Charcoal
  • ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable
  • The Nest Thermostat is designed to work without a C wire in most homes, but for some systems, including heating only, cooling only, zone controlled,...
  • Nest Thermostat turns itself down when you leave, so you don’t waste energy heating or cooling an empty home
  • Programmable thermostat that lets you create an energy efficient schedule in the Google Home app on your Android or iPhone
  • Remote control lets family members change the thermostat temperature from anywhere on a phone, laptop, or tablet[1]
SaleBestseller No. 3
Ecobee3 Lite SmartThermostat, Black
  • Save up to 23% annually on heating and cooling costs (compared to a hold of 72°F)
  • Control from anywhere using your Android or iOS device
  • Add SmartSensor to manage hot or cold spots and deliver enhanced comfort to the rooms that matter most
  • Automatically pauses your heating or cooling when a door or window is left open (requires ecobee SmartSensor for doors and windows and a Smart...
  • PLAYS WELL WITH OTHERS: ecobee3 lite works with your favorite smart home setups, including Apple HomeKit, Amazon Alexa, Google Assistant, Microsoft...
SaleBestseller No. 4
Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy...
  • COMFORT COMES IN YOUR COLOR. Personalize your Wi-Fi Smart Color Programmable Thermostat to fit your décor.
  • SAVE ENERGY AND GET REWARDED by checking with your energy provider about available energy savings rebates to save on your purchase (use rebate finder...
  • YOUR SCHEDULE. YOUR WAY. Flexible programming options for your schedule or utility company’s peak rate pricing.
  • EASY OPERATION AND INTUITIVE. Bright, easy-to-read touchscreen makes for simple operation.
  • COMPATIBLE WITH: Forced air (gas, oil or electric), hot water and steam, and heat pumps with electric backup. Does NOT work with electric baseboard...
Bestseller No. 5
C Wire Adapter 24 Volt Transformer Compatible with Nest Honeywell Ecobee Emerson Sensi Smart WiFi...
  • 【24V C wire power adapter for thermostat】: plugs into your standard 110v/ 120v outlet and converts to 24V, 500mA/AC
  • 【Designed for thermostats power supply】: widely applied for thermostats, powers up smart thermostats for Nest, Ecobee, Honeywell, Emerson Sensi,...
  • 【UL certified】: UL certification passed, stable and durable 24V transformer for thermostats
  • 【Easy installation】: 2 pin non-polarity wires support easy and quick install, 23 ft cable is long enough to plug it into an electrical outlet...
  • 【Packing list】: 1 x C wire adapter, 1 bag (50 pieces) of cable clips; The brand mentioned above is just for demonstrating compatibility
SaleBestseller No. 6
Honeywell Home RCHT8610WF T5 Smart Thermostat Energy Star Wi-Fi Programmable Touchscreen Alexa Ready...
  • ENERGY STAR certified. Help save energy, track your heating and cooling with monthly energy reports and get personalized tips on reducing energy use
  • Save Energy and Get Rewarded by checking with your energy provider about available energy savings rebates to save on your purchase (rebate finder link...
  • 7-Day Flexible Scheduling or Location Based Temperature control (GeoFencing)
  • The T5 Smart thermostat is fully compatible with Amazon Alexa, Apple HomeKit, Google Assistant, IFTTT, Cortana and other ecosystems
  • Adaptive recovery learns how long it takes to achieve the right temperature at the right time and automatically runs your system to get to your...
SaleBestseller No. 7
Emerson Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy...
  • PRIVACY PROTECTION*: Sensi won’t sell your personal information to third parties
  • EASY DIY INSTALLATION: Use the built-in level, illuminated easy-click terminals and step-by-step app instructions for a quick installation; Works with...
  • SAVE ABOUT 23% ON HVAC ENERGY*: The ENERGY STAR-certified Sensi smart thermostat can help you save energy with features like flexible scheduling,...
  • SLEEK, MODERN DESIGN: The large color display features easy-to-read temperatures and intuitive menus. Available in black, white and silver to...
  • CONTROL FROM ANYWHERE: Remotely control your home comfort from your smartphone or tablet using the Sensi mobile app for Android and iOS devices
SaleBestseller No. 8
Honeywell Home RTH8560D 7 Day Programmable Touchscreen Thermostat
  • Scheduling your heating/cooling cycles to fit your lifestyle is easy to do, with options to program day-to-day, over the weekend, or for an entire...
  • The crystal-clear display on the T5 Touchscreen Thermostat provides a seamless blend of function and style.
  • The screen is brightly backlit with a cool blue color and provides an easy-to-read indoor temperature, including indoor humidity readouts.
  • For added convenience, reminders to change air filters appear on the screen.
  • The advanced design of this thermostat provides maximum comfort by sensing whether your home needs heating or cooling with the Smart Response Learning...
Bestseller No. 9
Google Nest Power Connector - Nest Thermostat C Wire Adapter - C Wire Adapter for Smart Thermostat -...
  • Nest thermostats are designed to work without a C wire in most homes but for some systems, including heating-only, cooling-only, zone-controlled, and...
  • The Nest Power Connector is a simple affordable alternative to a C wire if your heating and cooling system requires one to power your Nest Thermostat
  • Costs less than hiring an electrician to install a new C wire through your walls
  • Installation is simple; the Nest Power Connector attaches to your furnace air handler, or zone controller and comes with simple instructions; no...
  • The Nest Power Connector is only compatible with 24 VAC systems; it won't work with millivolt or high voltage systems
SaleBestseller No. 10
ecobee3 Smarter Wi-Fi Thermostat with Remote Sensor, 2nd Generation
  • Smart, really smart - intuitively understands when to turn on your heating or cooling equipment based on your home's unique energy profile, the...
  • Knows you have a life - senses whether anyone's home and which rooms are occupied, delivering comfort when you're at home and saving you energy and...
  • Lowers your energy bills - ecobee saves homeowners an average of 23% annually, paying for itself in energy savings
SaleBestseller No. 11
Honeywell Home T9 WiFi Smart Thermostat, Smart Room Sensor Ready, Touchscreen Display, Alexa and...
  • ENERGY STAR CERTIFIED. See your energy use in the Monthly Energy Report, and help save even more with a schedule that adapts to your lifestyle, and by...
  • AUTO HOME AND AWAY MODE. Adjust your thermostat from anywhere with your mobile device, or let your home automatically react to your schedule with...
  • MULTI-ROOM FOCUS. Add Smart Room Sensors to focus the temperature on multiple rooms for comfort where it matters to you. (Sensors sold separately)....
  • COMPATIBLE WITH: Forced air (gas, oil or electric), hot water and steam, and heat pumps with electric backup. Does NOT work with electric baseboard...
  • SMARTER, SIMPLER SETUP. Everything you need comes in the box, including a power adapter so that the T9 works in most homes. The T9 intuitively...
SaleBestseller No. 12
Honeywell Home RTH7600D 7-Day Programmable Touchscreen Thermostat
  • Large touchscreen display makes it easy to set your preferred temperature or set a weekly schedule for automated adjustments. .Includes : Thermostat...
  • Set home and away temperatures to help save energy when you're not home. Temporary and permanent hold settings are also available for extended...
  • 7-Day menu-driven programming with 4 periods per day.
  • Backlit touchscreen display shows current room temperature and set point temperature simultaneously.
  • Simple and straight forward to install and use. The thermostat also has a real-time clock so it will automatically adjust for Daylight Savings Time.
SaleBestseller No. 13
Emerson F61-2663 Wall Plate for Sensi Wi-Fi Programmable Thermostat, White
  • Designed exclusively for Sensi Wi-Fi thermostat (only models ST55 and 1F87U-42WF)
  • It doesn’t fit Sensi ‘Touch’ Wi-Fi thermostat models ST75 & ST75W
  • Covers most marks, holes or any other issues left behind by other thermostats
  • White color - same as Sensi thermostat
  • Use with or without horizontal junction box
SaleBestseller No. 14
EMERSON Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy...
  • PRIVACY PROTECTION*: Sensi won’t sell your personal information to third parties
  • EASY DIY INSTALLATION: Use the built-in level, illuminated easy-click terminals and step-by-step app instructions for a quick installation. Works with...
  • SAVE ABOUT 23% ON HVAC ENERGY*: The ENERGY STAR-certified Sensi smart thermostat can help you save energy with features like flexible scheduling,...
  • CONTROL FROM ANYWHERE: Remotely control your home comfort from your smartphone or tablet using the Sensi mobile app for Android and iOS devices
  • SMART MAINTENANCE: Sensi can help monitor the performance and efficiency of your HVAC system by delivering valuable usage reports, alerts about your...
Bestseller No. 15
Google Nest Thermostat E - Smart Thermostat + Google Nest Temperature Sensor Bundle - White
  • The Programmable smart thermostat that learns the temperatures you like and programs itself to help you save energy and stay comfortable
  • The sensor tells the thermostat what the temperature is in the room where it’s placed and the thermostat uses that reading to control when the...
  • Home/Away Assist automatically adjusts itself to an Eco Temperature after you leave, so you don’t heat or cool an empty home. Compatibility-Combi...
  • Remote control lets family members change the temperature on this smart thermostat from anywhere using a phone, laptop, or tablet [1]
  • The Nest Leaf appears when you choose a temperature that saves energy; with Energy History, just check your phone to see how much energy you used and...
SaleBestseller No. 16
Honeywell Home RTH6360D1002 5-2 Day Programmable Thermostat
  • Flexible programming: 5-2 day or one week programming LCD Screen
  • Large backlit display shows current room temperature and set point temperature simultaneously
  • Smart response learning - learns your heating/cooling cycle times to deliver the right temperature when you want it
  • Auto change from heat to cool
  • Includes change reminders for air filters and low batteries
SaleBestseller No. 17
Honeywell Home T9 WiFi Smart Thermostat with 1 Smart Room Sensor, Touchscreen Display, Alexa and...
  • SAVE MONEY AND ENERGY. Adjust your ENERGY STAR certified thermostat from anywhere with your mobile device, or let your home automatically react to...
  • LIVE AND SLEEP SMARTER. Choose the temperature in a specific room, like the bedroom, to be exactly what you want it to be, to help get a better...
  • AMAZING SENSOR RANGE. The battery powered Smart Room Sensors utilize unique Honeywell Home technology to deliver an efficient signal up to 200 ft...
  • MULTI-ROOM FOCUS. Don’t be forced to choose one room over another, the T9 Smart Thermostat can handle multiple rooms to focus on (requires sensors).
  • CONTROL IT YOUR WAY. Control the T9 using the Resideo app or through Amazon Alexa, Apple HomeKit, Google Assistant, and more.
Bestseller No. 18
Emerson Sensi Wi-Fi Smart Thermostat for Smart Home, Pro Version, Works with Alexa, Energy Star...
  • SAVE ABOUT 23% ON HVAC ENERGY*: The ENERGY STAR certified Sensi thermostat helps you save on your HVAC energy costs, with features like geofencing,...
  • MOST INSTALL IN 30 MINUTES OR LESS**: Use the built-in level and step-by-step app instructions for a quick installation. Skip any extra work painting...
  • SMART HOME COMPATIBLE: Works with Amazon Alexa, Google Assistant, Apple HomeKit (c-wire required), and Samsung SmartThings smart home platforms.
  • USAGE REPORTS: Monitor current day and historical heating, cooling and fan runtimes right in the app.
  • CONTROL FROM ANYWHERE: Remotely control your home comfort from your smartphone or tablet using the Sensi mobile app for Android and iOS devices.
SaleBestseller No. 19
Honeywell Home C-Wire Adapter for Wi-Fi Thermostats THP9045A1098
  • The C-Wire Power Adapter makes Honeywell Home smart thermostats compatible with most homes that don’t have a common wire..Product Type :Electronic...
  • Quickly and easily power connected thermostats that require a c-wire.
  • Use for Wi-Fi, 24v Honeywell Home thermostats when a common wire is needed but not present.
  • Easy push terminals and an adhesive mount make installation quick and easy.
  • Simple adhesive mount allows you to attach the adapter to the outside of your furnace.
SaleBestseller No. 20
Sensi Touch Smart Thermostat by Emerson with Touchscreen Color Display, Programmable, Wi-Fi, Mobile...
  • PRIVACY PROTECTION*: Sensi won’t sell your personal information to third parties
  • EASY DIY INSTALLATION: Use the built-in level, illuminated easy-click terminals and step-by-step app instructions for a quick installation. Works with...
  • SAVE ABOUT 23% ON HVAC ENERGY*: The ENERGY STAR-certified Sensi smart thermostat can help you save energy with features like flexible scheduling,...
  • SLEEK, MODERN DESIGN: The large color display features easy-to-read temperatures and intuitive menus. Available in black, white and silver to...
  • CONTROL FROM ANYWHERE: Remotely control your home comfort from your smartphone or tablet using the Sensi mobile app for Android and iOS devices

Having trouble finding a great Smart Thermostat Without C Wire?

This problem is well understood by us because we have gone through the entire Smart Thermostat Without C Wire research process ourselves, which is why we have put together a comprehensive list of the best Smart Thermostat Without C Wires available in the market today.

After hours of searching and using all the models on the market, we have found the best Smart Thermostat Without C Wire for 2023. See our ranking below!

How Do You Buy The Best Smart Thermostat Without C Wire?

Do you get stressed out thinking about shopping for a great Smart Thermostat Without C Wire? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching Smart Thermostat Without C Wire, which is why we have assembled a comprehensive list of the greatest Smart Thermostat Without C Wire available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for Smart Thermostat Without C Wire that you consider buying. Your questions might include the following:

  • Is it worth buying an Smart Thermostat Without C Wire?
  • What benefits are there with buying an Smart Thermostat Without C Wire?
  • What factors deserve consideration when shopping for an effective Smart Thermostat Without C Wire?
  • Why is it crucial to invest in any Smart Thermostat Without C Wire, much less the best one?
  • Which Smart Thermostat Without C Wire are good in the current market?
  • Where can you find information like this about Smart Thermostat Without C Wire?

We’re convinced that you likely have far more questions than just these regarding Smart Thermostat Without C Wire, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for Smart Thermostat Without C Wire, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible Smart Thermostat Without C Wire. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an Smart Thermostat Without C Wire buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available Smart Thermostat Without C Wire currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of Smart Thermostat Without C Wire has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an Smart Thermostat Without C Wire?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your Smart Thermostat Without C Wire.
  5. Customer Ratings: Number ratings grade Smart Thermostat Without C Wire objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Smart Thermostat Without C Wire.
  7. Product Quality: You don’t always get what you pay for with an Smart Thermostat Without C Wire, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an Smart Thermostat Without C Wire is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining Smart Thermostat Without C Wire information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding Smart Thermostat Without C Wire is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: How do you install a thermostat without a C wire?

A: Even if your old thermostat was not using a C-wire,an unused C-wire may be stuffed in the wall behind the thermostat’s backplate. … If there is no C-wire,one option is to use an “add-a-wire” kit or a power extender kit. … Another option is to use a 24-volt adapter that provides a C-wire and plugs into a nearby outlet to power your thermostat.

Q: How to install a WiFi thermostat without a C wire?

A: – EASY-TO-USE-APP. Choose from the Total Connect Comfort app or the Honeywell Home app to control your WiFi thermostat anytime, … – SMART HOME INTEGRATION. The Wi-Fi 7-Day is compatible with voice assistant devices like Amazon Alexa, Google Assistant, … – SIMPLE INSTALL FOR A DIY PROJECT. … – ENERGY STAR CERTIFIED. … – EASY OPERATION AND INTUITIVE. …

Q: What is the best WiFi smart thermostat?

A: Ecobee SmartThermostat. The best smart thermostat overall,the Ecobee SmartThermostat looks and acts much like the Ecobee4,but with a few big improvements. Nest Learning Thermostat v.3. Nest’s smart thermostat is a cinch to set up and has a classic design. … Honeywell RTH8580WF Wi-Fi Thermostat. … Nest Thermostat. … Ecobee3 Lite. … Sensibo Sky. … Nest Thermostat E. …

Q: Is it worth it to get a smart thermostat?

A: Smart thermostats are much quicker and easier to program, and some (like the Nest) can do it all automatically, making it even easier. So on their own, smart thermostats probably won’t save you any more money than a basic, programmable thermostat.