Smart Thermostat GURU
Choose the best smart thermostat
TOPsSee our product TOPs

Product Reviews & Tests

Comparison

Our selection of the 22 best smart thermostats compatible with Alexa (September 2026)

#1
Heatmiser NeoStat WiFi Thermostat Smart Programmable Room Thermostat for Wet Underfloor Heating & Central Heating 230V App Control Alexa Google Home - No Hub Required - White

LavaTap

Heatmiser NeoStat WiFi Thermostat — 230V App & Voice Control (White)

★★★★★ ★★★★★ 8.6/10
+ Designed specifically for wet underfloor and central heating with 3 A switching
+ Built-in WiFi with no extra hub needed, plus decent app control
#2
° Smart Thermostat Starter Kit V3+ - Intelligent heating control, works with Amazon Alexa, Apple HomeKit, Google Assistant, IFTTT

tado

Smart Thermostat Starter Kit V3+

★★★★★ ★★★★★ 8.5/10
#3
Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy Star Certified, C-wire Required, ST75 Black 5.625" x 3.4" x 1.17"

Emerson

Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy Star Certified, C-wire Required, ST75 Black 5.625" x 3.4" x 1.17"

★★★★★ ★★★★★ 8.4/10
See full comparison →
Comparison

Guide: the 19 best wi-Fi programmable thermostats (September 2026)

#1
Heatmiser NeoStat WiFi Thermostat Smart Programmable Room Thermostat for Wet Underfloor Heating & Central Heating 230V App Control Alexa Google Home - No Hub Required - White

LavaTap

Heatmiser NeoStat WiFi Thermostat — 230V App & Voice Control (White)

★★★★★ ★★★★★ 8.6/10
+ Designed specifically for wet underfloor and central heating with 3 A switching
+ Built-in WiFi with no extra hub needed, plus decent app control
#2
Ecobee3 Lite Smart Thermostat with Whole Home Sensors Bundle

Ecobee3 Lite + Home Sensors

★★★★★ ★★★★★ 8.5/10
#3
Hive Thermostat For Heating Control (Combi Boilers), With Hive Nano 3 Hub (OpenTherm), White, A Combi Boiler is Required

Hive Thermostat with Hive Nano 3 Hub (Combi Boilers)

★★★★★ ★★★★★ 8.5/10
See full comparison →
Comparison

The best self-programming smart thermostats: our top 5 (2026)

#1
Nest Learning Thermostat 3rd Generation, Black - Smart Thermostat - A Brighter Way To Save Energy, Black Black Single

Google

Nest Learning Thermostat (3rd Gen) - Black

★★★★★ ★★★★★ 8.4/10
+ Easy app control and clear schedule/history make heating simpler to manage
+ Learns your routine and can cut heating when you’re away to save energy
#2
Wired Smart Thermostat - Add-On Thermostat For Multizone Control, Digital Heating Management, Easy Installation, Save Heating Energy And Costs - Replacement Of Existing Wired Thermostats V3+ 1x Add-on Wired Smart Thermostat

tado

Wired Add-On Smart Thermostat (V3+)

★★★★★ ★★★★★ 8.4/10
#3
Smart Thermostat for Electric Underfloor Heating, WiFi Thermostat Works with Matter, HomeKit, Alexa, Google and Home Assistant, Smart Heating with Timer, App Control, Energy Saving, Hubless Matter Electric Heating

meross

Smart Thermostat for Electric Underfloor Heating (Wi‑Fi, Matter, HomeKit, Alexa, Google)

★★★★★ ★★★★★ 8.3/10
See full comparison →
Comparison

Which smart thermostats with color display to choose? Top 4 (2026)

#1
Emerson Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Compatible with Alexa, Energy Star Certified, C-wire Required, ST75W

Emerson Sensi Touch Wi‑Fi Thermostat (ST75W)

★★★★★ ★★★★★ 8.4/10
+ Clear touchscreen and simple app make everyday use and scheduling straightforward
+ Stable Wi‑Fi connection and solid Alexa/Google/HomeKit/SmartThings integration
#2
Sensi Touch 2 Smart Thermostat with Touchscreen Color Display, Programmable, Wi-Fi, Data Privacy, Mobile App, Easy DIY, Works with Alexa, Energy Star Certified, ST76W, C-Wire Required, NEW FOR 2023 Black Thermostat

Sensi Touch 2 Smart Thermostat (Black)

★★★★★ ★★★★★ 8.4/10
#3
NSPanel WiFi Smart Light Switch, 2 Gang Switch Smart Home Control Panel With Temperature Control Function, Smart Lights Control, Work With Alexa & Google Home, Require Live& Neutral Wire, White

SONOFF

NSPanel 2-Gang WiFi Smart Light Switch (White)

★★★★★ ★★★★★ 8.0/10
See full comparison →

Browse by theme

Smart thermostats by product type

38 tests

Smart thermostats by system compatibility

11 tests

Smart thermostats by smart home compatibility

26 tests

Smart thermostats by features

10 tests

Smart thermostats by control method

6 tests

Smart thermostats by connectivity

10 tests

Smart thermostats by installation type

8 tests

Smart thermostats by design

4 tests

Smart thermostat accessories

8 tests

Our latest product reviews