The thermostat that we recommend as the best smart thermostat you can buy in 2026 is the Honeywell Home X8S, ecobee Premium, standard Google Nest Thermostat and Google Nest Learning Thermostat (4th Gen) round out the top five.
A good smart thermostat pays for itself over time. Consumer Reports estimates smart models cut heating and cooling bills by about 8 percent, or roughly $50 a year. They also let you adjust the temperature from your phone, set schedules, and turn the heat down automatically when everyone leaves.
These picks come from cross-checking lab testing and reviews at TechGearLab, Consumer Reports and Tom’s Guide, plus Home Depot customer ratings. They cover every budget.
At a glance
| Rank | Thermostat | Best for | Room sensor | Needs C-wire |
|---|---|---|---|---|
| 1 | Honeywell Home X8S | Best overall | Included | Yes |
| 2 | Google Nest Learning Thermostat (4th Gen) | Best learning thermostat | Included | No |
| 3 | ecobee Smart Thermostat Premium | Multi-room comfort, multi-stage systems | Included | Adapter included |
| 4 | Google Nest Thermostat | Most homes on a mid budget | No | No (most systems) |
| 5 | Amazon Smart Thermostat | Tight budgets, Alexa homes | No | Yes |
The top 5
01Honeywell Home X8S
Best overallThe X8S is Tom’s Guide‘s best overall pick for 2026. Its large color screen doubles as a mini smart-home display. It also leads Home Depot’s best-rated list.
Pros
- Large, vibrant, customizable display
- Advanced scheduling
- Supports remote room sensors (one included)
- Works with Alexa, Google Home, HomeKit and Matter
Cons
- More involved installation than rivals
02Google Nest Learning Thermostat (4th Gen)
Best learning thermostatThe newest Nest is the smartest thermostat on the market. It learns your routine, builds its own schedule, and adjusts for the weather. TechGearLab gave it its highest score, and Consumer Reports says it tops its automation tests.
Pros
- AI-powered scheduling that learns your habits
- Farsight display readable across the room
- Room sensor included
- Works without a C-wire
- Matter support, so it works beyond Google Home
Cons
- One of the priciest options
- Optional wiring adapter sold separately
- Google’s history of discontinuing products worries some buyers
03ecobee Smart Thermostat Premium
Best for even comfortecobee’s flagship is the pick if some rooms always run hot or cold. It ships with a wireless room sensor, averages temperatures across rooms, and works with multi-stage heating and cooling. TechGearLab named it the best thermostat for multi-stage systems.
Pros
- Room sensor included
- Built-in air quality monitor
- Bright touchscreen with built-in Alexa and music
- Plenty of hold and vacation modes
- Works with Alexa, Google and Apple HomeKit
Cons
- Expensive
- Scheduling less flexible than Nest’s
- Not as good at learning your routine on its own
04Google Nest Thermostat
Best for most peopleIf you want smart features without a premium price, the standard Nest Thermostat is the sweet spot. TechGearLab gave it an Editors’ Choice award for its easy install and strong scheduling.
Pros
- Excellent installation guidance
- Clean, simple app
- Strong scheduling features
- Attractive mirrored design
Cons
- Some on-device controls feel unintuitive
- Not compatible with 2-stage systems
- No room sensor support
05Amazon Smart Thermostat
Best budgetAmazon’s thermostat covers the basics well. TechGearLab named it the best value smart thermostat. It runs on Honeywell Home technology and plugs straight into Alexa.
Pros
- Very affordable
- Clear, guided installation
- Seamless Alexa integration and scheduling
Cons
- Works only with Alexa
- App can be slow or occasionally crash
- Needs a C-wire or an adapter
Honorable mention: The ecobee Smart Thermostat Essential is Tom’s Guide’s best budget pick. Choose it over the Nest Thermostat if you want Apple HomeKit support or plan to add room sensors later.
What to check before you buy
Compatibility matters more than features, so confirm your wiring and HVAC system first. Here’s what Consumer Reports recommends checking.
- C-wire: Most smart thermostats need a common wire for steady power. Nest models can usually run without one. ecobee and Honeywell Home include or sell power adapters, and an add-a-wire kit or an electrician can also solve it.
- System type: Check support for your setup, such as a heat pump or 2-stage system. Ductless mini-splits, window ACs and wall heat pumps need a different device, such as the Mysa, Sensibo Air or Cielo Breez Max.
- Smart-home platform: Match the thermostat to the assistant you already use (Alexa, Google or Apple HomeKit). Matter support makes it work across all of them.
- Room sensors: For hot and cold spots, pick a model with a sensor included, such as the Nest Learning, ecobee Premium or Honeywell X8S.
- Useful extras: Geofencing (adjusts when you leave), filter-change reminders, and automatic heat/cool changeover.
- Timing and rebates: Holiday sales from October through December bring the best prices, and many utilities offer rebates on smart thermostats.
The bottom line
For most buyers who want the best, get the Honeywell Home X8S, with its big screen that doubles as a smart-home display. Choose the Nest Learning Thermostat (4th Gen) if you want a thermostat that learns your routine, or the ecobee Premium if uneven room temperatures are your main problem. On a budget, the Nest Thermostat is the best all-rounder, and the Amazon Smart Thermostat is the cheapest way in for Alexa homes.
Sources
- TechGearLab — Best Thermostats (updated Oct 1, 2025)
- Consumer Reports — Best Smart Thermostats (updated Jan 1, 2026)
- Consumer Reports — Thermostat Buying Guide
- Tom’s Guide — Best Smart Thermostats (updated June 16, 2026)
- Home Depot — Best-Rated Thermostats