Best Smart Thermostats 2026: Top 7 Reviewed & Compared

Published March 2, 2026 · 13.Energy · 8 min read

Why a Smart Thermostat Is the Best Energy Investment

Heating and cooling account for nearly 50% of your energy bill. A smart thermostat optimizes this single biggest expense automatically. ENERGY STAR estimates savings of $131-$145/year — meaning every smart thermostat pays for itself within the first year.

1. Google Nest Learning Thermostat (4th Gen) — Best Overall

Price: $279 | Savings: Up to $145/year | Buy on Amazon

The Nest Learning Thermostat learns your schedule in about a week and creates a custom heating/cooling program. The 4th generation adds a borderless display, Matter support for cross-platform smart home compatibility, and improved temperature sensors. Works with Google Home, Alexa, and Apple HomeKit via Matter.

2. Ecobee Smart Thermostat Premium — Best for Large Homes

Price: $249 | Savings: Up to $140/year | Buy on Amazon

Ecobee's Premium model includes a built-in SmartSensor, Alexa speaker, air quality monitor, and occupancy detection. The included room sensor eliminates hot and cold spots in larger homes. Built-in Alexa means it doubles as a smart speaker.

3. Amazon Smart Thermostat — Best Budget

Price: $79 | Savings: Up to $130/year | Buy on Amazon

At just $79, the Amazon Smart Thermostat offers the best value. Made by Honeywell with Alexa integration, it uses Hunches to learn your preferences over time. Simple design, easy installation, and the fastest ROI of any smart thermostat.

4-5. Honeywell Home T9 and Emerson Sensi Touch 2

Honeywell T9: $199 | Buy on Amazon — Room sensors for multi-zone comfort, geofencing, 7-day scheduling. Great for Honeywell loyalists.

Emerson Sensi Touch 2: $169 | Buy on Amazon — Beautiful touchscreen, works with HomeKit natively, easy DIY install, flexible scheduling. Best for Apple HomeKit users.

Comparison Table

ThermostatPriceLearningSensorsVoiceSavings
Nest 4th Gen$279YesOptionalGoogle/Alexa$145/yr
Ecobee Premium$249YesIncludedBuilt-in Alexa$140/yr
Amazon Smart$79HunchesNoAlexa$130/yr
Honeywell T9$199NoIncludedGoogle/Alexa$130/yr
Sensi Touch 2$169NoNoAll platforms$125/yr

Recommended Resources

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