Ecobee Smart Thermostat Premium Review

The Ecobee Smart Thermostat Premium is a smart thermostat that bundles a room sensor, a built-in Alexa speaker, and air quality monitoring into one device, making it the most complete out-of-the-box package in its category and our pick for best overall smart thermostat.

Pros and Cons

Pros

• Room sensor included — solves the "one sensor for the whole house" problem
• Built-in Alexa speaker, no separate smart speaker needed
• Works natively with Alexa, Google Home, and Apple HomeKit
• Built-in air quality and humidity monitoring
• No subscription required for any feature

Cons

• Zinc body and 4-inch touchscreen feel busier than Nest's minimalist design
• No proprietary learning algorithm — scheduling is more manual/app-guided
• Trying to be several devices in one won't appeal to everyone

First Impressions

Where Nest goes for minimalist elegance, Ecobee goes for functional density — a 4-inch touchscreen in a matte zinc housing that makes clear, at a glance, this thermostat is doing more than just showing a temperature. It's a legitimately larger device on the wall than the Nest, and some will find that a little busy for a room accent; others will appreciate that everything — weather, air quality, room sensor status — is visible without opening an app.

The Room Sensor Changes Everything

This is the single feature that separates Ecobee from most of the category, and it's included in the box rather than sold as an accessory. The remote sensor detects both temperature and occupancy in whichever room you place it — a bedroom, home office, whatever room the wall-mounted thermostat doesn't accurately represent. If the sensor detects the room is empty, the thermostat can deprioritize targeting that space's temperature preference, which cuts wasted heating and cooling in unoccupied rooms. In multi-room testing, this consistently solved the classic "hallway reads 70°F but the bedroom is actually 62°F" complaint that plagues single-sensor thermostats — including Nest's base configuration.

Built-In Alexa Is a Genuinely Useful Inclusion

The Premium tier includes a built-in Alexa speaker directly in the thermostat — not a gimmick bullet point, but a real, usable voice assistant. You can ask about the weather, set a timer, or control other Alexa-connected devices directly from the wall unit, without needing a separate Echo speaker in that room. For anyone building out a whole-home Alexa setup, this effectively gives you a free smart speaker bundled into a thermostat purchase.

Air Quality Monitoring

Ecobee tracks indoor humidity and air quality and surfaces alerts directly in the app — something neither current Nest model offers at all. It's not a replacement for a dedicated air quality monitor, but for a first alert that something's off (high humidity risking mold, poor air circulation), it's a meaningful bonus feature that costs nothing extra.

Ecosystem Compatibility

This is where Ecobee draws its clearest line against Nest: it's the only thermostat in this comparison that works natively across Alexa, Google Home, and Apple HomeKit without compromise. If your household mixes ecosystems — an iPhone user and an Android user, say, or Alexa speakers alongside a Google Nest Hub — Ecobee is the one thermostat that won't force you to pick a side. Independent testing has consistently found it wins the majority of head-to-head feature comparisons against Nest specifically because of this cross-platform depth.

What You Don't Get

Ecobee doesn't have Nest's signature learning algorithm — instead of the thermostat inferring your schedule from manual adjustments, you set schedules through the app, with Ecobee's software offering scheduling suggestions rather than fully automating the process. For some households this is a non-issue; for anyone who specifically wants a thermostat that requires zero setup effort, Nest's approach is the more hands-off of the two.

Who Should Buy This

Buy the Ecobee Smart Thermostat Premium if you want the most complete smart thermostat available at this price point — room sensor, voice assistant, and cross-platform compatibility all included, with no subscription. It's the stronger buy for HomeKit households specifically, since Nest offers no HomeKit support at all. If you're fully committed to Google's ecosystem and want the most hands-off learning experience, see our Google Nest Learning Thermostat review — or read the full Nest vs Ecobee comparison to decide between them directly.