Ecobee Smart Thermostat Premium Review

We compared the Ecobee Smart Thermostat Premium to 20 other smart thermostats. It’s one of the best you can buy.
Best smart thermostat for Apple HomeKit users
Ecobee Smart Thermostat Premium
4.8 out of 5 stars
  • pro
    Energy Star certified
  • pro
    3-year warranty
  • con
    Learns routines
Cathy Habas
Oct 17, 2023
Icon Time To Read4 min read

SafeWise experts have years of firsthand experience testing the products we recommend. Learn how we test and review

The Ecobee Smart Thermostat Premium is at least four smart home devices rolled into one: a learning thermostat, a smart home hub, an air quality monitor, and a security system base station. Talk about bang for your buck!

We’re still impressed even if we just focus on the Ecobee Premium’s smart thermostat capabilities, such as occupancy-based heating and cooling, air filter maintenance reminders, and energy-saving suggestions.

It’s the best smart thermostat Ecobee offers and one of the best in the industry. Let’s take a look at why the Ecobee Smart Thermostat Premium is a worthy investment.

pro Excellent smart home compatibility
pro Siri or Alexa voice assistants built in
pro Spotify streaming
pro Learning AI
pro Occupancy sensor
pro Temperature and humidity sensors
pro Air quality monitor
pro Compatible with up to 16 remote sensors
pro Geofencing automation available
pro Outside temp and forecast
con No backup battery

What's in the box

  • Ecobee Smart Thermostat Premium
  • Ecobee SmartSensor
  • Optional wall adhesive for SmartSensor
  • Mounting plate
  • Wire labels
  • Power Extender Kit
  • Trim plate
  • Screws and drywall anchors
  • Quick start guide
Ecobee drops new Smart Doorbell Camera

Get a first look at Ecobee's latest smart device,  a robust doorbell camera that can send video to the Smart Thermostat Premium. Learn about all the features, specs, and integration capabilities in our unboxing article.

One of the best learning thermostats on the market

The Ecobee Smart Thermostat Premium joins an elite crowd of learning thermostats. Not to be confused with smart thermostats, learning thermostats program themselves by monitoring your habits and schedule. They’re hands-off yet accurate, letting you reap all the energy-saving rewards of a programmable thermostat without doing any extra work.

(Other examples of learning thermostats include the Google Nest Learning Thermostat, the Honeywell T9, and the Amazon Smart Thermostat.)

To help the Smart Thermostat Premium learn your ways, we recommend putting Ecobee SmartSensors where you spend most of your time. For example, you might put one in the home office and another in the living room. The Smart Thermostat Premium comes with one SmartSensor already.

Ecobee SmartSensors save even more energy

Two types of Ecobee SmartSensors pair with the Smart Thermostat Premium: a table-top design called SmartSensor for Rooms and a contact sensor called SmartSensor for Doors and Windows.

  • SmartSensor for Rooms enables a unique “follow me” setting so the thermostat only monitors occupied rooms. Your HVAC system won’t kick on to address a cold spot when no one’s around, thus saving energy.
  • SmartSensor for Doors and Windows prompts the thermostat to turn off if a door or window is left open too long.

Both types of SmartSensors are at the heart of Ecobee’s optional security subscription. The SmartSensor for Rooms is a motion detector, whereas the SmartSensor for Doors and Windows works like a standard door sensor or window sensor.

Connects to more remote sensors than most thermostats

The fact that the Ecobee Smart Thermostat Premium pairs with a remote sensor is something to celebrate. Many smart thermostats don’t offer this simple solution for reducing cold spots.

But what’s extra exciting is the sheer number of remote sensors that the Smart Thermostat Premium works with—32. To put this into context, the Google Nest Learning Thermostat, GE Cync, and Wyze Thermostat support just six .

You might need all 32 sensors if you want to cover every door, window, and room in your home.

Supports all the major smart hubs

Pick a random smart hub and the Ecobee Smart Thermostat Premium probably works with it.

In fact, it’s the only smart thermostat—aside from the Ecobee Smart Thermostat Enhanced—that works with all the following smart hubs and connection protocols:

Runners-up include the Honeywell T9 (no Bluetooth) and the Google Nest Learning Thermostat (no HomeKit).

Such wide-ranging compatibility is great news for smart home beginners. All the major smart home hubs remain viable options for you to buy in the future. 

Security features (subscription required)

The Ecobee Smart Thermostat Premium works with Ecobee Smart Security, which starts at $5/month for self-monitoring and increases to $10/month for professional monitoring.

Subscribing to either Ecobee Smart Security plan activates the Smart Thermostat Premium’s built-in smoke alarm listener and siren.

The slightly cheaper Ecobee Smart Thermostat Enhanced does the same thing, though. Learn more in our full Ecobee review.

Works with whole-home humidifiers and ventilators

The Smart Thermostat Premium is the only Ecobee thermostat that works with star terminals (also called ACC+/- terminals), which sync whole-home humidifiers or ventilators to the thermostat.

These terminals aren’t supported by many other smart thermostats. Other options include both Google Nest thermostats, the Wyze Thermostat, and the thermostat used by security companies Frontpoint, Brinks, and Link Interactive.

Ecobee Smart Thermostat Premium vs. the competition

The Ecobee Smart Thermostat Premium is right up there with the Google Nest Learning Thermostat in terms of core thermostat features, performance, and ease of use. The Ecobee Smart Thermostat Premium emphasizes more smart home features (like Spotify streaming) than other brands. Alternatively, the Google Nest Learning Thermostat doubles down on critical maintenance alerts and a backup battery.

Aside from the Google Nest Learning Thermostat, the Ecobee Smart Thermostat Premium’s main competitors are other Ecobee Thermostats. We think it’s worth paying for the Smart Thermostat Premium’s extra features for peace of mind and energy savings. However, budget-conscious buyers might prefer the Ecobee 3 Lite—especially if you’re looking for a thermostat with Apple HomeKit compatibility.

Compare the Ecobee Smart Thermostat Premium to other smart thermostats

Best for
Backup battery
C-wire required
Learn more
Best overall
Icon Yes  LightYes
2 yearsNoAlexa, Google, IFTTT, SmartThings, Vivint, ADT
Best for Apple HomeKit
Icon No  LightNo
3 yearsNo Alexa, Google, HomeKit, IFTTT, SmartThings, Bluetooth, Abode
Best for budgets
Icon No  LightNo
1 yearNoAlexa, Google, IFTTT, Bluetooth
Best for Ring users
Icon No  LightNo
2 yearsYesAlexa, Google, HomeKit, IFTTT, SmartThings, Cortana, Ring
Best password protection
Icon No  LightNo
3 yearsYesAlexa, Google, HomeKit, SmartThings price as of post date. Offers and availability may vary by location and are subject to change. Read full disclaimer.

Final word

With tons of smart home goodies packed inside, the Ecobee Smart Thermostat Premium offers exceptional value. It’s a worthwhile purchase for anyone interested in saving energy with home automation.


All Ecobee thermostats support DIY installation. They come with wire labels and detailed instructions—but it’s understandable if you want to leave all electrical wiring to the pros. Ecobee makes it easy-to-find installers familiar with their products—just type your zip code into their website.

It depends on which Ecobee thermostat you already use and what features you’re interested in. It’s the first Ecobee model to include learning AI, so that’s a major perk. Users also note that the Ecobee Premium has a nicer-looking interface and a better-sounding speaker.

No, none of the Ecobee thermostats have batteries.

How we reviewed the Ecobee Smart Thermostat Premium

Our Ecobee Smart Thermostat Premium review hinged on our research into the best smart thermostats and our hands-on experience with earlier Ecobee thermostat models. We compared the Ecobee Smart Thermostat Premium to 20 other smart thermostats across over 30 specifications and features.

We also read user reviews to identify consistent feedback about the Ecobee Smart Thermostat Premium—both good and bad. Learn more about how we rank and review products on our methodology page.

Related articles on SafeWise


*Product prices and availability are accurate as of post date and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product. utilizes paid Amazon links.

Certain content that appears on this site comes from Amazon. This content is provided “as is” and is subject to change or removal at any time.

Google, Google Nest Secure, Google Nest Learning Thermostat,  and other related marks are trademarks of Google LLC.

Cathy Habas
Written by
Cathy Habas
With over eight years of experience as a content writer, Cathy has a knack for untangling complex information. Her natural curiosity and ability to empathize help Cathy offer insightful, friendly advice. She believes in empowering readers who may not feel confident about a purchase, project, or topic. Cathy earned her Bachelor of Arts degree in English from Indiana University Southeast and began her professional writing career immediately after graduation. She is a certified Safe Sleep Ambassador and has contributed to sites like,, Hunker, and Thumbtack. Cathy’s pride and joy is her Appaloosa “Chacos.” She also likes to crochet while watching stand-up comedy specials on Netflix.

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