The Best Smart Thermostats for 2026

The Premium is the thermostat that does the most without asking you to think about it. A bundled remote SmartSensor means it reads temperature and occupancy in the room you actually use — not just the hallway where the thermostat lives — so its eco+ automation can pre-cool, respond to time-of-use rates, and avoid heating empty rooms. It's also the rare flagship that speaks Apple HomeKit alongside Alexa, Google Home, and Matter, and it has a built-in Alexa speaker and air-quality monitor if you want them.

If you never want to build a schedule, the Nest is still the one to beat. Its learning algorithm watches your first week of manual adjustments and constructs a schedule automatically, then keeps refining it. The 4th-gen redesign added a larger edge-to-edge display, Soli-based presence sensing, and — the headline for anyone with a heat pump — balance-point control that decides when to lean on the compressor versus auxiliary heat. It ships with a Nest Temperature Sensor in the box now, closing an old gap with Ecobee.

The value play of the category, and it isn't close. Built on Honeywell Home thermostat tech and ENERGY STAR certified, the Amazon Smart Thermostat proves you don't need $250 to capture certified savings. There's no touchscreen flourish and it's tied to the Alexa app rather than a rich standalone ecosystem, but on pure return-on-investment it wins: at typical prices — and it frequently dips under $60 on sale — the payback period is the shortest of anything here, often under a year in homes that were running a dumb thermostat.

The Enhanced is the Premium with the flourishes shaved off — and for most people that's the smarter buy. You keep the same app, the same eco+ automation engine, and the same HomeKit/Alexa/Google compatibility; you lose the built-in Alexa speaker, the air-quality monitor, and a bundled sensor. If you want Ecobee's platform and HomeKit support without paying for a microphone you'll never use, this is the pick. Add a SmartSensor separately later if you want per-room occupancy.

Not to be confused with the Learning model above, the plain Nest Thermostat is Google's mid-tier option: a mirrored face, a cheaper mirror-touch strip instead of the click ring, and Savings Finder suggestions rather than full auto-learning. It's the right call if you're already in the Google Home ecosystem, want something that looks sharp on the wall, and don't need HomeKit. It regularly drops to around $100, which narrows the gap to the far cheaper Amazon pick — so buy it for the looks and Google integration, not the price.