Top 10 Best ac thermostat in 2026

Last Updated - 6/18/2026

🏆Best Choice

Amazon

Amazon Smart Thermostat – Save money and energy - Works with Alexa and Ring - C-wire required

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Smart upgrade - Amazon Smart Thermostat is an easy way to switch from a traditional thermostat and help reduce energy usage.
•Create comfort zones throughout your home by using select Echo devices or Amazon Smart Air Quality Monitor to automatically adjust heating and cooling based on temperature readings or presence detection.
•Save money - After purchase, Amazon will send you an email with details about rebates that may be available from energy providers in your area. Explore rebates above.
•Save energy - According to EPA estimates, ENERGY STAR certified thermostats save an average of $50 on yearly energy bills.
•Automatic Control - Alexa can automatically switch between your preferred home, away, and sleep temperatures.
•On-the-go control - Let Alexa set the temperature, or set it yourself from anywhere with the Alexa app.
•You can do it - The Alexa app will guide you through the installation process, but customer service is always available.
•Reliable - Made with Honeywell Home Thermostat Technology and backed by 130 years of experience.

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$79.99

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ecobee

ecobee Smart Thermostat Essential - Energy Star Certified programmable Wi-Fi Thermostat - Works with Siri, Alexa, and Google Assistant

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Save up to 23% every year on heating and cooling costs, adjusts to your set schedule to save energy when you’re gone and optimize comfort when you’re home. Compared to a hold of 72
•Compatible with 85% of systems, check your system’s compatibility with our online ecobee Compatibility Checker on the ecobee support page
•Change your temperature by easily tapping the color touchscreen or using the ecobee app. Plus, free software upgrades ensure you get the best out of your Smart Thermostat Essential, for years to come
•Automatically adjusts to your set schedule to save energy when you’re gone and optimize comfort when you’re home. Keep track of your energy consumption when you're on the go on the ecobee app
•Easy DIY install. No C Wire, no problem. Get the ecobee Power Extender Kit (PEK) for homes without a C-Wire and keep your walls looking nice with our trim kit – both sold separately
•Works with leading smart home ecosystems. Pair Smart Thermostat Essential with Apple HomeKit, Google Assistant, and Alexa
•Works with most 24 VAC HVAC equipment: Gas, oil, electric, dual fuel, forced air Conventional (2H/1C or 1H/2C) Heat Pump (2H/1C) Boilers. You can check your system’s compatibility with our online ecobee Compatibility Checker on the ecobee support page
•Add in a SmartSensor which allows you to measure the temperature in rooms that matter most. It reads temperature and movement in whatever room it is placed in for complete home monitoring and energy savings (SmartSensor 2 pack sold separately)
•Built in eco+ Smart Features: Indoor humidity detection, schedule assistant, time of use which preheats or precools your home when energy is less expensive to reduce energy use during peak hours

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$139.99

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Honeywell Home

Honeywell Home RTH221B1039 RTH221B Programmable Thermostat, White

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•ONE WEEK PROGRAMMING: Set one identical program for the entire week with four program periods per day including wake, leave, arrive and sleep.
•PRECISE TEMPERATURE CONTROL: Precise temperature control of plus/- 1 degree Fahrenheit
•DIGITAL DISPLAY: Easy-to-read digital display with an intuitive interface for one-touch access to setpoint temperature
•EASY INSTALLATION: Easy to install yourself and basic operation keeps programming simple
•REMINDERS: Built-in battery change reminders (2 AAA batteries are required for operation)
•SET POINT RETENTION: Set point is retained in memory in the event of a power outage
•DISPLAY OPTIONS: Fahrenheit or Celsius; 12 or 24 hour clock. Note: This thermostat is not backlit.
•OVERRIDE OPTIONS: Permanent and temporary override capability
•COMPATIBLE WITH: Heating, cooling and heat pumps without auxiliary heat options
•Does NOT work with electric baseboard heat (120-240 V), heat pumps with backup, or multi-stage heating/cooling. For indoor use only.

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$27.99

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Suuwer

Suuwer Non-Programmable Thermostats for Home 1 Heat/1 Cool Conventional Single-Stage Systems (Blue Backlight)

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•【Notice】Please make sure to read the installation and wiring instructions provided in the pictures carefully before buying. If you are inexperienced with installation, it is advised to be cautious when making a purchase to avoid issues like product failure or incompatibility. (Verify the existing base to ensure only 2 to 5 wires are compatible for installation and wiring).
•【Thermostat Applications】for with Conventional Single-Stage Heating (Gas/Oil/Electric Furnace) & Ventilation & Air Conditioning, up to 1 Heat and 1 Cool. ( TIP: Does not work Multistage Heating & Air Conditioning, and HVAC Central Air Conditioner Heat Pump System )
•【Incompatible Systems】Does not work multistage systems (1H/2C, 2H/2C), HVAC heat pump systems (2H/1C, 4H/2C), PTACs, 3-wire hydronic (hot water), dual fuel/hybrid heating. Does not work line voltage systems (120-240V electric baseboards heat); mini split heat pump air conditioner, RV air conditioners mach and roughneck series.
•Suuwer S701 Single Stage Non-Programmable Digital Thermostats for Home 1 Heating and 1 Cooling Single-Stage Systems. ( Dual powered by 24VAC power or 2 AAA batteries, No common wire (c-wire) required on most systems).
•Easy-to See and Read: Display with blue backlight, large clear backlit digital display, very suitable for middle-aged and elderly people.
•Technical Support: Separate heat or cool swing set up (0.2°F to 2°F) and 5 minute compressor delay protection (Selectable ON or OFF) and Low Battery Indicator.
•Room temperature calibration adjustment: Accurate temperature control of +/-1-degree F for consistent comfort, (Room temperature display range: 41°F to 95°F, Temperature control range: 44°F to 90°F）
•Friendly service: 2-year worry-free warranty and 24h customer servic. ( Tip: before purchasing please check whether the wiring port of the old thermostat matches )

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$26.99

$39.99

-33%

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Google Nest

Nest (T3007ES) Learning Thermostat, Easy Temperature Control for Every Room in Your House, Stainless Steel (Third Generation), Works with Alexa

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•No more programming: With Auto-Schedule, the Google Nest Learning Thermostat learns from you and programs itself..Product note: You can also check your system’s compatibility before purchasing a Nest thermostat with our online Nest Compatibility Checker on the Google Nest support page
•Home/Away Assist: don't heat or cool an empty home. Home/Away Assist adjusts the temperature after you leave.
•Remote control: Control your thermostat from anywhere using the Nest app.
•Know more, save more Check your Energy History to see how much energy you use and why.
•Look for the Leaf: The Nest Leaf appears when you choose a temperature that saves energy.

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$154.99

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Riseem

Non-Programmable Thermostat for Home Single-Stage Systems, 1 Heat/1 Cool, Easy DIY Install, Blue Backlight

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•High Compatibility: Forced air (gas, oil or electric), Electric furnace, Hot water steam or gravity radiant heat, Heat only systems, Heat pump w/o auxiliary or emergency heat, Millivolt, Gas fireplaces (24V), Floor or wall furnaces, Cool only systems.(TIP: Before purchasing, check to see if this thermostat is compatible with your system.)
•Not Compatible: Heat pump with auxiliary or emergency heat, Dual fuel/hybrid heating, Electric baseboard heat (110-240 volts), Line voltage, Convectors, Radiant-ceiling heat, Mini split systems and 12V RV systems.
•Easy to Install and Use: Large terminal blocks with universal sub-base, can be installed within 30 minutes, clear, easy-to-read backlight LCD display and easy controls make for a user-friendly experience.
•Simple but Powerful Control: Easy-access front-load battery compartment, adjustable temperature differential (swing) for energy optimization and maximum system life, Support temperature display calibration, Convert °C/°F units, compressor delay protection (selectable on or off).
•Dual Power Supply: Can be powered by 24VAC power or 2 AAA batteries, No common wire (C-wire) required on most systems (only required on heat only and cool only systems).

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$19.19

$22.58

-15%

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Heagstat

Heagstat Non-Programmable Thermostats for Home Conventional Single-Stage Systems, up to 1 Heat/ 1 Cool (with White Backlight)

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•【Notice】Buyers should thoroughly examine the installation and wiring instructions depicted in the images before buying. It is recommended to exercise caution if you lack experience in installation to avoid potential problems like product malfunction or incompatibility due to incorrect purchases. Note that the base can only be attached with a maximum of 2 to 5 wires, and connections with 6 to 8 wires are not suitable.
•【Thermostat Applications 1H/1C】for with Conventional Single-Stage Heating & Air Conditioning, up to 1 Heat and 1 Cool. and Gas/Oil/Electric Furnace (1 Heat only), Boiler Radiant (1 Heat only), Furnace Forced-Air (1 Heat Only), Gas Fireplace (24 Volts), Cooling Only, Only 1H/1C Heat Pump (without aux) Systems.
•【Incompatible Systems】Does not work multistage systems (1H/2C, 2H/2C), HVAC heat pump systems (2H/1C, 4H/2C), PTACs, 3-wire hydronic (hot water), dual fuel/hybrid heating. Does not work line voltage systems (120-240V electric baseboards heat); mini split heat pump air conditioner, RV air conditioners mach and roughneck series.
•Heagstat H701 Non-programmable thermostat for house conventional single-stage systems up to 1 heat/1 cool, to control the temperature in a room.
•Accurate temperature control of +/-1-Degree F for consistent comfort, Room temperature display range: 41°F to 95°F, Temperature control range: 44°F to 90°F.
•Separate Heating and Cooling Swing (Cycle Rate). Which will Either Prolong or Shorten the Temperature Open Time. Make Comfortable Temperatures to Teduce Energy Usage, Savings on Annual Heating and Cooling Costs.
•Support room temperature error display calibration adjustment and 5 minute compressor delay protection (Selectable on or off), with low battery indicator available change reminder (Tip: Please replace the accessories in advance).
•Support Dual Powered 24VAC Power or 2 AAA Batteries. No Common Wire (c-wire) Rrequired on Most Single-Stage Systems.
•Display with White Backlight, Easy-to See and Read. Large, Clear Backlit Digital Display, Very Suitable for Middle-Aged and Elderly People.
•After-sales Service: If you have any problem, please feel free to contact us, we will repley you in 24 hours. the products come with 30 days free return, 2-year Worry-Free Warranty.

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$26.97

$34.99

-23%

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Garystat

Upgraded Digital Non-Programmable Thermostat for Home 1 Heat/1 Cool Single Stage System, with Temperature & Humidity Monitor and Large Blue LCD Display

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•It's non programmable conventional thermostat: single stage, 1 heating and 1 cooling, electric or gas/oil configurable. (TIP: before purchasing, check to see if this thermostat is compatible with your old thermostat.)
•for with Conventional Single-Stage Heating (Gas/Oil/Electric Furnace), Ventilation, and Air Conditioning. 【Does not work: Multistage Heating & Air Conditioning, and HVAC Central Air Conditioner Heat Pump System】
•Not Compatible with the following systems: HVAC Central Air Conditioner Heat Pump System( with Aux or Emergency heating), Multistage Heating & Air Conditioning, 3-wire Hydronic (Hot Water), Dual Fuel/Hybrid Heating, Mini Split Air Conditioning Systems, and 120/240V Electric Baseboard and Line Voltage systems, Convectors, Radiant Ceiling Heat, RV Thermostats.
•Easy to read and use: Large digital display with large characters and blue backlight. separate buttons for easy setpoint temperature, very suitable for middle-aged and elderly people to use.
•Upgrade function: The thermostat with humidity and temperature monitor to ensure you’re always aware of changes in your home environment.
•It gives precise temperature control with +/- 1 degree in Fahrenheit and Celsius for ultimate consistent control to keep you comfortable.
•Easy installation and the battery is easy to replace, with dual powered by 24VAC power or 2 AAA batteries, C-wire is not required. built-in low battery reminder, compressor delay protection and more.
•Please contact us at once if any quality problem, come with 2-years warranty and 24h customer service.

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$26.98

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Aowel

Aowel Non Programmable Thermostat for Home 1 Heat/ 1 Cool Single-Stage System, with Room Temperature Monitor (LCD Blue Backlit Screen)

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Aowel AW701 Nonprogrammable Thermostat for House, Compatible with 24V Conventional Single-Stage Heating & Air Conditioning, up to 1 heat 1 cool.
•【Thermostat Applications 1H/1C】for with Conventional Single-Stage Heating (Gas/Oil/Electric Furnace) & Ventilation & Air Conditioning, up to 1 Heat and 1 Cool. ( TIP: Does not work Multistage Heating & Air Conditioning, and HVAC Central Air Conditioner Heat Pump System )
•【Incompatible Systems】Does not work multistage systems (1H/2C, 2H/2C), HVAC heat pump systems (2H/1C, 4H/2C), PTACs, 3-wire hydronic (hot water), dual fuel/hybrid heating. Does not work line voltage systems (120-240V electric baseboards heat); mini split heat pump air conditioner, RV air conditioners mach and roughneck series.
•【Buyer's Note】Before making a purchase, please ensure that the image and product description match your existing thermostat (verify that the base supports only 2 to 5 wires), and check the dimensions to confirm whether it will cover any wall marks left by the old thermostat.
•Accurate temperature control of +/-2-degree F for consistent comfort.【Room temperature display range: 32°F to 99°F, temperature control range: 44°F to 90°F】
•Simple thermostat, Support separate heat or cool swing setting (range: 0.2°F to 2°F), giving you even greater control over your home temperature.
•Support temperature display calibration, Convert °C/°F units, compressor delay protection (selectable on or off). with humidity monitor and battery replacement reminder.
•Dual powered by 24VAC power or 2 AAA batteries, No common wire (c-wire) required on most systems (only required on heat only and cool only systems).
•Easy-to see and read, with blue backlight, large clear backlit digital display, very suitable for middle-aged and elderly people. Friendly Service: 2-year worry-free warranty and 24h customer service.

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$22.26

$31.99

-30%

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Miuputake

NonProgrammable Thermostat for House, Digital Energy-Saving Thermostat,Single-Stage Systems, 1 Heat/1 Cool, Easy DIY Install, Green Backlight

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•· High Compatibility: Forced air (gas, oil or electric), Electric furnace, Hot water steam or gravity radiant heat, Heat only systems, Heat pump w/o auxiliary or emergency heat, Millivolt, Gas fireplaces (24V), Floor or wall furnaces, Cool only systems.(TIP: Before purchasing, check to see if this thermostat is compatible with your system.)
•· Easy to Install and Use: Large terminal blocks with universal sub-base, can be installed within 30 minutes, clear, easy-to-read backlight LCD display and easy controls make for a user-friendly experience.
•· Simple but Powerful Control: Easy-access front-load battery compartment, adjustable temperature differential (swing) for energy optimization and maximum system life, Support temperature display calibration, Convert °C/°F units, compressor delay protection (selectable on or off).
•· Not Compatible: Heat pump with auxiliary or emergency heat, Dual fuel/hybrid heating, Electric baseboard heat (110-240 volts), Line voltage, Convectors, Radiant-ceiling heat, Mini split systems and 12V RV systems.
•· Dual Power Supply: Can be powered by 24VAC power or 2 AAA batteries, No common wire (C-wire) required on most systems (only required on heat only and cool only systems).

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$22.58

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