Best King Programmable Thermostats in 2026

Automatically pauses your heating or cooling when a door or window is left open (requires ecobee SmartSensor for doors and windows and a Smart Security subscription)

PLAYS WELL WITH OTHERS: ecobee3 lite works with your favorite smart home setups, including Apple HomeKit, Amazon Alexa, Google Assistant, Microsoft Cortana, Samsung SmartThings, Wink, and IFTTT

WORKS WITH ROOM SENSORS: Place them in the rooms that matter the most and have the temperature balanced throughout your whole home. Measuring both occupancy and temperature, sensors signal your ecobee Smart Thermostat to automatically switch to the right mode for comfort when you’re home or for savings when you’re not. 2-pack sold separately.

EASILY INSTALL YOURSELF: It only takes about 30 minutes, thanks to an easy to follow installation guide and an in-app step-by-step walkthrough. Everything you need comes in the box, including a Power Extender Kit for homes with no common wire (C-wire)

SMART MAINTENANCE: Sensi can help monitor the performance and efficiency of your HVAC system by delivering valuable usage reports, alerts about your equipment, and maintenance reminders like filter replacement

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 and paint your walls

Remote control lets family members change the thermostat temperature from anywhere on a phone, laptop, or tablet[1]

Savings Finder looks for more ways your thermostat can help you save, and suggests tweaks to your schedule in the app; check with your energy provider to learn more about rebates and more ways to save on a Nest thermostat

Smart thermostat with HVAC monitoring, which looks out for your heating and cooling systems; sends an alert if something doesn’t seem right, along with helpful reminders to make maintenance easier[2]

It’s easy to install your thermostat, typically in 30 minutes or less, with everything you need included in the box; it’s compatible with 85% of heating and cooling systems

Control the temperature with your voice using smart home devices that work with Google Assistant or Alexa[3]

Nest Renew makes it simple to support clean energy right from home; it works with your Nest Thermostat[5] to help you automatically prioritize your usage[6] to times when energy is cleaner or less expensive

Please refer to the product description section below for all applicable legal disclaimers denoted by the bracketed numbers in the preceding bullet points (e.g., [1], [2], etc.)

SMART HOME INTEGRATION. The Wi-Fi 7-Day is compatible with voice assistant devices like Amazon Alexa, Google Assistant, Microsoft Cortana, and more.

THERMOSTAT THAT FITS YOUR LIFE. 7-day, 4 periods per day, flexible programming lets you sync your comfort with your schedule.

EASY OPERATION AND INTUITIVE. Big, backlit digital display and easy controls make for a user-friendly experience.

EASY-TO-USE-APP. Choose from the Total Connect Comfort app or the Resideo app to control your Wi-Fi thermostat anytime, anywhere.

COMPATIBLE WITH: Forced air (gas, oil or electric), hot water and steam, and heat pumps with electric backup. Does NOT work with electric baseboard heat (120-240V). C-Wire required.

Works with most heat/cool oil furnace systems. Will not work with heating only oil furnace systems unless a C-Wire is present. Ability to view local weather from web portal or app

Does Not Work with Aux Heat Pump and Multi-Stage Systems, Does Not Work RV, Does Not Work 120/240V Electric Baseboard / Line Volt.

Very Suitable for Middle-Aged and Elderly People, Easy-to-read Digital 4.5 sq. in.

Display with Large Characters and Blue Backlight Big Separate Buttons for Easy Setting

Separate Heating and Cooling Swing (Cycle Rate) _ Low Battery Indicator

Room Temperature Calibration Adjustment _ 5 Minute Compressor Delay Protection (Selectable on or off)

Precise Temperature Control with +/- 1 Degree in Fahrenheit and Celsius for Ultimate Consistent Control.

Friendly Service: 2-year Worry-Free Warranty and 24h Customer Service,

Precise temperature control with +/- 1 degree in Fahrenheit and Celsius for ultimate consistent control.

Easy installation, dual power with hardwire or 2 AAA batteries, C-wire is not required.

Integrates seamlessly with your preferred smart home system.

Comes with Siri and Alexa Built-in for hands-free control, your way

Everything you need to install your smart thermostat, besides basic tools, is in the box and installation should take about 45 minutes.

ecobee Smart Thermostat Enhanced is made with quality materials and designed to last on your wall for over a decade. It’s hardwired so you never have to worry about losing control or replacing batteries. If you run into problems, our dedicated support team is available 7 days a week.

Add in a SmartSensor which allows you to measure the temperature in rooms that matter most, like the nursery or bedroom. It reads temperature and movement in whatever room it is placed in for complete home monitoring and energy savings (SmartSensor sold separately).

TEMPERATURE LIMITS: Stay in your comfort zone with adjustable heating and cooling temperature limits

YOUR WEEK YOUR WAY: Enjoy 7-day or 5/2-day temperature programming that fits your schedule

Ideal for home, RV, and Mobile Home uses.

Mercury Free

【&】Notice；does not work with electric baseboard heat (120v-240v) or does not work with aux heat pump and multistage systems and does not work RV.

【&】5.0 sq. in display with large characters and blue backlight big separate buttons for easy setting.

【&】Very suitable for middle-aged and elderly people, easy-to-read and use.

【&】Separate heating and cooling swing (Cycle Rate) setting and Room temperature calibration adjustment.

【&】Low battery indicator and a/c 3 minute compressor delay protection (selectable on or off).

【&】with room temperature & humidity detect, Cooperate with the equipment to adjust the optimal temperature and humidity value to provide the most comfortable environment.

【&】Friendly Service: 2-year worry-free warranty and 24h customer service.

for use with central Gas, Oil, or electric furnaces, ​millivolt systems (compatible with 85% of systems )

Does Not Work with Aux Heat Pump Systems, Does Not Work RV, Does Not Work 120/240V Electric Baseboard / Line Volt.

This thermostat has a built-in battery change and filter change reminders, retains programmed memory in event of power outage.

with compressor protection feature, Wait 5 minutes for the system to restart safely, without damage to the compressor (Selectable on or off)

Room Temperature Calibration Adjustment, Precise Temperature Control with +/- 1 Degree in Fahrenheit and Celsius for Ultimate Consistent Control.

Dual Powered by 24VAC Power or 2 AAA Batteries, C-wire is Not Required. Friendly Service: 2-year Worry-free Warranty and 24h Customer Service

Note: The two-level mode cooling heating icon is displayed +1: as two-level mode. ( +1 is not displayed for single-level mode)

Memory backup

UL Listed

5-1-1 day programmable, intuitive wake, leave, return, sleep programming icons. ( Notice; Press the Hold button to easily maintain the temperature, to control the non-programmable mode ).

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.

Support a heat or cool swing set up (0.2°F to 2°F), which will either prolong or shorten the temperature open time. make comfortable temperatures to reduce energy usage, savings on annual heating and cooling costs.

Room temperature calibration adjustment, and 5 minute compressor delay protection (Selectable on or off), with air filter change reminder and low battery indicator available.

4.5 sq. inch display with white backlight, easy-to see and read. large, clear backlit digital display, very suitable for middle-aged and elderly people.

Dual-powered (battery and/or hardwire 24Vac power), easy access battery compartment.

Friendly service: 2-year worry-free warranty and 24h customer servic.

Power shuts off at 50°f

Helps save energy

Compressor short cycling protection,1 heating, 1 cooling and heat pumps without auxiliary heat, Does not work with electric baseboard heat (120-240V).Detailed instructions for easy installation,C-wire needed for proper installation. Note-c wire is required and is the primary power source for your thermostat. Without a c wire, your thermostat will not power up，In the case of battery power, there is no need to connect the C wire.

Accurate temperature control of +/-1-Degree F for consistent comfort, Detailed instructions for easy installation, 12 or 24 hour clock.

💯【High Accuracy And Safe】: Built-in highly accurate temperature sensor, ambient temperature is detected automatically by remote controller. High and low temperature alarms are available, the maximum load can reach 15A, 1650W.

🎈【Widely Used】: Widely used for greenhouse,mushroom house, reptiles breeding, pet feeding, wine cellar, cigar storage, home brewing, seed germination, fermentation, baby room, attic fan, swamp cooler, evaporative cooler, space heater, wall panel heater, electric fireplace heater, garage, rv, etc.

Very Suitable for Middle-Aged and Elderly People, Easy-to-read digital 5.0 sq. in.

Display with Large Characters and White Backlight Big Separate Buttons for Easy Setting

Separate heating and cooling swing (Cycle Rate) _ Low battery indicator

Thermostat Room temperature calibration adjustment _ 3 minute compressor delay protection (selectable on or off)

Thermostat Precise temperature control with +/- 1 degree in Fahrenheit and Celsius for ultimate consistent control.

Dual powered by 24VAC power or 2 AAA batteries, C-wire is not required. Friendly Service: 2-year worry-free warranty and 24h customer service

Vacation set-point override to reduce energy use while away from home,easy programmable mode ensures the desired temperature is reached by the programmed time.

Accurate temperature control of +/-1-Degree F for consistent comfort, Detailed instructions, 12 or 24 hour clock.

Easy to read and use: 5.0 sq. inch digital display with large characters and green 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.

50°F to 90°F (10°C to 32°C) ± 2F

Separate Base Plate to Aid Installation

Battery Operated: Allows Maximum System Compatibility (Two “AA” Batteries Included)

Energy Usage Monitor: Keeps Track of Actual Operational Time

Hold Mode Operation: Allows For Manual Operation. May Be Used For Vacation Setback

1-Year Limited Warranty

Multi-Volt Rated 120/208/240V

Over-the-Air (OTA) firmware upgradeable

Temperature Range 41º - 90ºF (5º - 32ºC)

User Defined Max Temperature Lock

Program 4 or 6 Time Periods Per Day For Maximum Flexibility

Electronic Sensing For Accurate Temperature Control (±1ºF)

For Use On Baseboard, Fan Forced & Radiant Electric Heaters

Multi-Volt Rated 120/208/240V

Over-the-Air (OTA) firmware upgradeable

Temperature Range 41º - 90ºF (5º - 32ºC)

User Defined Max Temperature Lock

Program 4 or 6 Time Periods Per Day For Maximum Flexibility

Electronic Sensing For Accurate Temperature Control (±1ºF)

For Use On Baseboard, Fan Forced & Radiant Electric Heaters

Range: 44°F to 95°F (7°C to 35°C)

Save up to 28% on your heating costs

♨️SUPPORTS HEATING, COOLING, VENTILATION, HUMIDIFICATION & DEHUMIDIFICATION: For heating and cooling, this thermostat can adjust the temperature to your desired level and maintain it using a temperature control algorithm. For ventilation, the thermostat can adjust the fan speed to improve air circulation. For humidification and dehumidification, the thermostat can adjust the humidity level by controlling the HVAC system's operation, such as turning on or off the humidifier or dehumidifier.

📉REMOTE CONTROL & HISTORICAL DATA: Track your heating and cooling behaviors with the 7-day historical energy reports. Review this data directly from your smart thermostat or from your phone by downloading the gadget app that is available for either IOS or Android devices and make any necessary adjustments. You can also control your thermostat remotely through your Amazon Alexa.

🏊POOL AQUASTAT & TEMPERATURE CALIBRATIONS: Both great features for regulating temperatures. The Pool Aquastat is unique feature that most competitors don't have. It regulates -the temperature of a swimming pool or spa to make sure it doesn't fall below a certain set point; and the Temperature calibration feature, allows you to adjust the temperature reading on the thermostat by a certain number of degrees Fahrenheiy by adding or subtracting up to 0.1°F to the temperature reading.

🗣️LANGUAGES: English, Chinese, Spain, Italian, Russian, Polish, Czech, German, French, Slovenski, Swedish, and Portuguese.

📋Certifications: CE/ISO9001/RoHS, recyclable packaging