20 Best Smart Thermostat Without C Wire (2022 Updated)

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A smart thermostat without a c wire is a thermostat that does not require a c wire to function. While a c wire is not required, it is recommended as it provides a more reliable connection and allows the thermostat to communicate with other devices in your home.

20 Best Smart Thermostat Without C Wire

1. Lux Kono Smart Thermostat

Lux Kono Smart Thermostat

  • Does NOT work with Amazon Alexa and Apple home kit
  • Powered by system (c-wire) or the included Lux power bridge
  • Compatibility: forced air, gas, Oil & electric furnaces (up to 2H/1C)
  • Heat pump systems (with or without AUX/emergency heat)

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Product Details

Specifications

Details
Brand Name LUX
Thermostat Type Heating and Cooling
Control Type Dial
Product Type Smart Thermostat
Color Black

Reviews From Real Customers

gvanryswyk
jstach83
olumba27

2. Honeywell Home T9 WiFi Smart Thermostat with RoomSmart Sensor

Honeywell Home T9 WiFi Smart Thermostat with RoomSmart Sensor

  • Color Graphical LCD touchscreen display
  • 7-day scheduling
  • Auto change from heat to cool

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Product Details

Specifications

Details
Product Type Smart thermostat
Environment Indoor
Functions Temperature measuring, control heating systems, control cooling systems, humidity measurement
Integrated Sensors Humidity
Power Source Hardwired, power adapter

Reviews From Real Customers

Neocoffee41
Robert in Saint George
Joel B

3. Honeywell – Smart Color Thermostat with Wi-Fi Connectivity – Silver

Honeywell - Smart Color Thermostat with Wi-Fi Connectivity - Silver

  • Make sure this fits by entering your model number.
  • COMFORT COMES IN YOUR COLOR. Personalize your Wi-Fi Smart Color Programmable Thermostat to fit your dcor.
  • 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.
  • WEATHER SCREEN FEATURES. View the daily forecast on the screen, and check indoor and outdoor humidity.

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Product Details

Specifications

Details
Product Type Smart thermostat
Environment Indoor
Functions Temperature measuring, control heating systems, control cooling systems, humidity measurement
Power Source Hardwired
Connectivity Technology Wireless

Reviews From Real Customers

Roger R
Brisket
R A L

4. Honeywell Home – T9 Smart Programmable Touch-Screen Wi-Fi Thermostat – White

Honeywell Home - T9 Smart Programmable Touch-Screen Wi-Fi Thermostat - White

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Product Details

Specifications

Details
Manufacturer Part Number RCHT9510WFW2001/W
Product Model T9
Product Name Home T9 WIFI Smart Thermostat – RCHT9510WFW
Product Type Thermostat
Programmable Yes

Reviews From Real Customers

K@NLR
foxmja

5. Ecobee Smart Thermostat Enhanced – Black

Ecobee Smart Thermostat Enhanced - Black

  • Enjoy comfort without compromise.
  • Easy to install and use every day.
  • Designed to last on your wall for over a decade.

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Product Details

Specifications

Details
Manufacturer Part Number EB-STATE6L-01
Product Line Smart
Product Name Smart Thermostat Enhanced
Product Type Thermostat
Technical Information
Smart Connect Yes
Virtual Assistant Supported Alexa,HomeKit,SmartThings,IFTTT,Google Assistant
Miscellaneous
Application/Usage Smartphone,Home

Reviews From Real Customers

nick12345

6. Ecobee3 Lite Smart Thermostat

Ecobee3 Lite Smart Thermostat

  • 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
  • Integrates seamlessly with your preferred smart home system

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Product Details

Specifications

Details
Product Type Thermostat
Connectivity Technology Wireless – IEEE 802.11b, IEEE 802.11g, IEEE 802.11n
Display 3.5″ – LCD
Temperature Range 7 – 33 °C
Measurement Accuracy ±0.5 °C
Thermostat
Features Built-in humidity sensor, touch screen
Miscellaneous
Localization United States
Warranty 3-year warranty
Compliant Standards RoHS
Dimensions & Weight
Width 4.1 in
Depth 0.8 in
Height 4.1 in
Environmental Parameters
Min Operating Temperature 32 °F
Max Operating Temperature 131 °F
Humidity Range Operating 5 – 95% (non-condensing)

Reviews From Real Customers

Tkbb61

7. Amazon Smart Thermostat Works with Alexa

Amazon Smart Thermostat Works with Alexa

  • Amazon Smart Thermostat is an easy way to switch from a traditional thermostat and help reduce energy usage Save energy
  • ENERGY STAR certified thermostats are required to save an average of $50 on yearly energy bills Automatic control
  • Alexa can do the programming for you, updating the temperature to keep you comfortable On-the-go comfort
  • Let Alexa set the temperature, or set it yourself from anywhere with the Alexa app You can do it

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Product Details

Specifications

Details
Product Type Smart thermostat
Environment Indoor
Functions Temperature measuring
Power Source Hardwired, power adapter
Connectivity Technology Wireless

Reviews From Real Customers

Daryl
My Mail

8. Honeywell Wi-Fi 9000 colour Touchscreen Programmable Thermostat

 Honeywell Wi-Fi 9000 colour Touchscreen Programmable Thermostat

  • Total Connect Comfort app available, remotely monitor/manage your homes comfort and energy use
  • Energy Savings mode, and 7 day easy programming
  • Custom Display, with on screen comfort information
  • Simple programming and Professional installation

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Product Details

Specifications

Details
Manufacturer Part Number TH9320WF5003/U
Product Model TH9320WF5003/U
Product Name TH9320WF5003/U WiFi 9000 Color Touchscreen Thermostat
Product Type Thermostat
Product Color Premier White

Reviews From Real Customers

Peter C
resideo.com
FL Naples User

9. Ecobee Smart Thermostat Premium

Ecobee Smart Thermostat Premium

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Product Details

Specifications

Details
Compatible with Oil Fuel Types Yes
Room Sensor Included Yes
Backlit Display Yes (motion activated)
Outdoor Weather Sensor Yes
Supports Single-Stage Cooling Yes
Control Type Touch screen
Compatible with 24V Heating Yes
Bluetooth Compatibility Yes
Wi-Fi Compatibility Yes
Works with the Google Assistant Yes
Works with Android Yes
ENERGY STAR Certified Yes
Displays Weather Forecast Yes
Compatible with Electric Fuel Types Yes
Auto System Change from Heat to Cool Yes
Daylight Savings Time Ready Yes
Works with SmartThings Yes
Mounting Hardware Included Yes
Proximity Sensor Yes
Hub Required No
Compatible with Humidifier/Dehumidifier Yes
Compatible with Gas Fuel Types Yes
Supports Multi-Stage Heating Yes
Package Quantity 1
Compatible with Aux/Emergency Heat Pump Yes
Temperature Displayed Current and setpoint/desired temperature
Hold Temperature Button Yes
Compatible with 24V Cooling Yes
App Compatibility Yes
Energy History Indicator Yes
High/Low Desired Temperature Limits Yes
Supports Multi-Stage Cooling Yes
Auto-Away Mode Yes
Works with iOS Yes
Built-In Z-Wave Yes
Works with Apple HomeKit Yes
Temporary Vacation Override Yes
Filter Monitor Yes
Early-Start Comfort Function Yes
Works with Amazon Alexa Yes
Program Periods per Day 24
Display Type LED
Voice Controlled Yes
Supports Single-Stage Heating Yes

10. Google Nest Smart Thermostat (Charcoal)

Google Nest Smart Thermostat (Charcoal)

  • ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable
  • Nest Thermostat turns itself down when you leave, so you dont 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]
  • Modern design that looks beautiful in any home; choose the color that looks best in yours

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Google Store

Product Details

Specifications

Details
Product Type Thermostat
Integrated Sensors Ambient light sensor, motion sensor, humidity, capacitive sensor, temperature
Power Source Hardwired, battery
Connectivity Technology Wireless – IEEE 802.11b, IEEE 802.11a, IEEE 802.11g, IEEE 802.11n, IEEE 802.15, Bluetooth 4.0 LE
Frequency Band 2.4 Ghz, 5 GHz

Reviews From Real Customers

Irie_Mon_Bumboklaat
GuvnA
John Hieber

11. Honeywell Wi-Fi 7-Day Programmable Thermostat (White)

Honeywell Wi-Fi 7-Day Programmable Thermostat (White)

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Product Details

Specifications

Details
Manufacturer Part Number RTH6580WF1001/W1
Product Model RTH6580WF
Product Name Wi-Fi 7-Day Programmable Thermostat (RTH6580WF)
Product Type Thermostat
Battery Chemistry Lithium Ion (Li-Ion)

Reviews From Real Customers

Eric Cote
WXman
joe2345

12. Honeywell RTH9580WF Wi-Fi Smart Thermostat – Silver

Honeywell RTH9580WF Wi-Fi Smart Thermostat - Silver

  • Brand: Honeywell
  • Code: RTH9580WF
  • Premium Quality

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Product Details

Specifications

Details
Product Type Thermostat
Functions Temperature measuring, control heating systems, control cooling systems, humidity measurement
Connectivity Technology Wireless
Supported Host Device OS iOS, Android
Display Color

Reviews From Real Customers

heptone182
TomR
grboyd

13. Nest Thermostat E – 2 Pack

Nest Thermostat E - 2 Pack

  • Simple design with frosted display blends in beautifully
  • Up close, everything you see is soft and subtle and it all disappears when you walk away
  • Proven energy saving features can help you save from day one
  • Control from anywhere with the Nest app
  • Uses your phone’s location to turn itself down when you’re away

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Specifications

Details
Manufacturer Google, Inc
Manufacturer Part Number T4000ES2X-K
Brand Name Google
Product Name Google Nest Learning Thermostat E White 2-pack
Product Type Smart Thermostat

Reviews From Real Customers

Justin
MTS SEO Support
Alissa Hunley

14. Nest Learning Thermostat E (White)

Nest Learning Thermostat E (White)

  • The simple design of the Google Nest Thermostat E blends in with your home
  • Easy installation
  • Control your thermostat from anywhere with the Nest app

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Product Details

Specifications

Details
Product Type Thermostat
Sensor Type Temperature, humidity, ambient light, occupancy, proximity
Functions Control heating systems, control cooling systems
Power Source Battery
Connectivity Technology Wireless – IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, Bluetooth 4.0

Reviews From Real Customers

Margie D
RJ

15. Google Nest Learning Thermostat T3007ES

Google Nest Learning Thermostat T3007ES

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Product Details

Specifications

Details
Manufacturer Part Number T3007ES
Product Line Learning
Product Name Learning Thermostat
Product Type Thermostat
Technical Information
Battery Chemistry Lithium Ion (Li-Ion)
Physical Characteristics
Product Color Black
Height 1.2″
Miscellaneous
Package Contents Learning Thermostat. Optional trim plate. Mounting screws and labels. Nest screwdriver. Installation Guide. Welcome Guide. Nest Pro installation card
Warranty
Limited Warranty 2 Year

Reviews From Real Customers

OPM1
Kabir

16. Nest – Learning Thermostat – 3rd Gen – Stainless Steel

Nest - Learning Thermostat - 3rd Gen - Stainless Steel

  • Programmable smart thermostat that learns your schedule and the temperatures you like and programs itself to help you save energy and stay comfortable
  • Home/Away Assist automatically adjusts itself to an Eco Temperature after you leave, so you don’t heat or cool an empty home
  • Remote control lets family members change the temperature from anywhere on a phone, laptop, or tablet[1]
  • The Nest Leaf appears when you choose a temperature that saves energy
  • Farsight shows you the temperature, weather, or time on your thermostat when you walk in the room

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Product Details

Specifications

Details
Product Type Thermostat
Sensor Type Temperature, humidity, ambient light
Functions Control heating systems, control cooling systems
Connectivity Technology Wireless – IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, Bluetooth 4.0
OS Required Microsoft Windows 7 or later, Apple MacOS X 10.9 or later

Reviews From Real Customers

amanda.d
vaani.t
Paddy

17. Nest – Learning Thermostat – 3rd Generation – Black

Nest - Learning Thermostat - 3rd Generation - Black

  • Thermostat Only

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Product Details

Specifications

Details
Width 3.3 in
Depth 1.2 in
Height 3.3 in
Weight 8.61 oz
Product Type Thermostat

Reviews From Real Customers

Hovanes

18. Honeywell Home T9 WiFi Smart Thermostat (9510)

Honeywell Home T9 WiFi Smart Thermostat (9510)

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Product Details

Specifications

Details
Weight 1 oz

19. Ecobee3 Wi-fi Enabled Thermostat with Wireless Remote

Ecobee3 Wi-fi Enabled Thermostat with Wireless Remote

  • Remote Sensor with detachable stand
  • Power Extender Kit (PEK)
  • Screws and drywall plugs
  • Standard and large trim plates
  • Quick Start Guide

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Build.com

Product Details

Specifications

Details
Product Type Thermostat
Power Source Power adapter
Connectivity Technology Wireless – IEEE 802.11b, IEEE 802.11g, IEEE 802.11n
Supported Host Device OS iOS 9 or later
Display 3.5″ – LCD

Reviews From Real Customers

tiffany .s
karissa .k
josh.m

20. Google Nest E Smart Thermostat White

Google Nest E Smart Thermostat White

  • Nest Screwdriver
  • Welcome Guide
  • Installation Guide
  • Mounting Screws & Labels

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Product Details

Conclusion

If you don’t have a c wire, you can still use a smart thermostat, but you may not be able to use all of the features. For example, you may not be able to use features that require constant power, like some scheduling features or remote access.

You may also have to set the thermostat to a specific temperature manually, rather than being able to adjust it automatically.

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