Smart Home Climate Control

All Smart Thermostats

Top Wi-Fi smart thermostats from Ecobee and Google Nest that save energy and integrate with Alexa, Siri, and Google Home.

8 picks Updated May 13, 2026 Avg rating 4.3 79,265 total reviews
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#1
Sensi ST55 Smart Wi-Fi Thermostat
Sensi
Sensi ST55 Smart Wi-Fi Thermostat
4.4 (22,658 reviews)
$90.55 at Amazon
In Stock

A privacy-friendly DIY-installable Wi-Fi thermostat that works with Alexa and is Energy Star certified. Reviewers praise how simple installation and the mobile app are, while a few wish the screen off...

Reviewed by Reviews2Shop Editorial

Why we like it: A no-fuss Wi-Fi thermostat ideal for renters and DIY upgraders who care about data privacy.

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#2
Ecobee Smart Thermostat Enhanced
Ecobee
Ecobee Smart Thermostat Enhanced
4.4 (3,533 reviews)
$199.00 at Amazon
In Stock

The ecobee Smart Thermostat Enhanced uses built-in radar occupancy to pre-cool or pre-heat before you arrive, claims up to 26% energy savings, and works with Alexa, Google, Siri, and SmartThings. Incl...

+ Buyers love the per-room reports and easy DIY setup, though some miss a true fan-circulate mode
Reviewed by Reviews2Shop Editorial

Why we like it: Strong mid-tier smart thermostat with radar occupancy and PEK in the box; biggest miss is the lack of a continuous fan-circulate setting.

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#3
Google Nest Learning Thermostat (4th Gen)
Google
Google Nest Learning Thermostat (4th Gen)
4.4 (2,218 reviews)
$245.00 at Amazon
In Stock

The 4th-gen Nest Learning Thermostat brings a 2.7-inch curved display, a redesigned aluminum ring, and Gemini-era automation that learns your schedule in about a week. Far-field sensing and the includ...

Reviewed by Reviews2Shop Editorial

Why we like it: Beautiful and smarter than ever, but the new Google Home dependency and premium price draw the most owner complaints.

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#4
Honeywell Home RTH9585WF1004 Wi-Fi Smart Color Thermostat
Honeywell
Honeywell Home RTH9585WF1004 Wi-Fi Smart Color Thermostat
4.3 (19,883 reviews)
$150.22 at Amazon
In Stock

A 7-day programmable Wi-Fi thermostat with a customizable color touchscreen and Alexa support

+ Owners like the easy programming and weather display, while some report Wi-Fi reconnection issues after router changes
Reviewed by Reviews2Shop Editorial

Why we like it: A solid mid-range smart thermostat with a colorful, easy-to-read touchscreen.

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#5
Ecobee Smart Thermostat Premium
Ecobee
Ecobee Smart Thermostat Premium
4.3 (3,903 reviews)
$259.99 at Amazon
In Stock

The ecobee Smart Thermostat Premium adds a built-in air-quality monitor, premium speaker for Alexa and Siri, smart doorbell live view, and a SmartSensor in the box, claiming up to 26% savings on heati...

Reviewed by Reviews2Shop Editorial

Why we like it: Top-tier ecobee with built-in voice, air-quality, and a SmartSensor included; the premium feel costs about $80 more than the Enhanced.

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#6
Ecobee Smart Thermostat Essential
Ecobee
Ecobee Smart Thermostat Essential
4.3 (1,528 reviews)
$139.99 at Amazon
In Stock

The ecobee Smart Thermostat Essential is the brand's budget pick, covering up to 85% of 24VAC HVAC systems with a clean color touchscreen and Alexa, Google, and HomeKit support, claiming up to 23% ene...

+ Reviewers like the simple app and reliable schedules; biggest complaint is that no Power Extender Kit is included for C-wire-free homes
Reviewed by Reviews2Shop Editorial

Why we like it: Affordable ecobee entry with strong app and schedules; budget for a PEK separately if your wiring lacks a C wire.

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#7
Google Nest Learning Thermostat (3rd Gen)
Google
Google Nest Learning Thermostat (3rd Gen)
4.4 (510 reviews)
$219.99 at Amazon
In Stock

The 3rd-generation Nest Learning Thermostat delivers the classic high-resolution Farsight display, auto-schedule learning, and Home/Away Assist across iOS and Android. Works with most 24V systems incl...

+ Owners praise the elegant dial UX and energy savings; the biggest complaint is occasional Wi-Fi dropouts and an aging app compared to newer rivals
Reviewed by Reviews2Shop Editorial

Why we like it: A proven, beautifully designed thermostat that still impresses, though the platform is starting to show its age.

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#8
Amazon Smart Thermostat
Amazon
Amazon Smart Thermostat
4.0 (25,032 reviews)
$79.99 at Amazon
In Stock

A budget Energy Star certified thermostat that works with Alexa and Ring and uses Honeywell technology under the hood

+ Buyers love the price and Alexa integration, while several caution that a C-wire is required for installation
Reviewed by Reviews2Shop Editorial

Why we like it: An aggressively priced way to add Alexa-driven climate control to your home.

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Compare Features

Sensi ST55 Smart Wi-Fi Thermostat
Ecobee Smart Thermostat Enhanced
Google Nest Learning Thermostat (4th Gen)
Honeywell Home RTH9585WF1004 Wi-Fi Smart Color Thermostat
Ecobee Smart Thermostat Premium
Ecobee Smart Thermostat Essential
Google Nest Learning Thermostat (3rd Gen)
Amazon Smart Thermostat
Install DIY — — — — — — —
Privacy data privacy focus — — — — — — —
Alexa works with — — compatible — — — works with
Energy Star certified — — — — — — —
Display — Color touchscreen Mirror 2.7" LCD color touchscreen Glass touchscreen Touchscreen 2.08" LCD —
Sensors — Built-in temp + humidity Built-in temp + humidity + proximity — SmartSensor (room) + air quality + radar Built-in temp + humidity Built-in temp + humidity + activity —
Remote — App control (iOS/Android) Google Home app — App + Apple HomeKit App Google Home / Nest app —
Voice Assistant — Alexa, Google, HomeKit, SmartThings Google Assistant + Alexa — Alexa + Siri Alexa, Google Google Assistant + Alexa —
C-wire — Required (or PEK) Optional (battery-backed) — Required (or PEK) Required Optional —
Power — 24V HVAC 24V HVAC — 24V HVAC 24V HVAC 24V HVAC —
Wi-Fi — — — yes — — — —
Schedule — — — 7 day — — — —
Ring — — — — — — — works with
Wire — — — — — — — C-wire required
Price — — — — — — — budget
Rating 4.4 4.4 4.4 4.3 4.3 4.3 4.4 4.0
Price $90.55 $199.00 $245.00 $150.22 $259.99 $139.99 $219.99 $79.99
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