The 10 Best Wi-Fi Smart Thermostats

Smart thermostats that connect to your router, ranked from live Amazon data.

We pulled the best-selling Wi-Fi smart thermostats on Amazon and scored them on rating, review volume, and features: remote sensors, Apple Home support, and C-wire flexibility. Thermostats with Matter are on our Matter page.

Prices, ratings, and review counts captured from Amazon on 2026-10-04.

Our picks

Best Overall

ecobee

ecobee Smart Thermostat Enhanced

4.4 (3,718)

ecobee's mid-range model with room sensor support and Apple Home, Alexa, Google, and SmartThings, 3K+ bought last month.

Amazon Smart Thermostat

4.0 (25,542)

$56.99 and 25,542 reviews. The easy pick for an Alexa home with a C-wire.

4.4 (23,081)

Sensi's simple, well-rated thermostat with 23,081 reviews and no subscription.

ecobee Smart Thermostat Premium

4.3 (4,179)

Alexa and Siri built in, plus a SmartSensor in the box.

$209.99

View on Amazon →

Side-by-side

Swipe the table sideways to see every column.

#	Thermostat	Price	Rating	Reviews	Works with	Display	C-wire	Sensors	App	Score
1	ecobee Smart Thermostat Premium	$209.99	4.3	4,179		Touchscreen	Listed	Yes	ecobee	88
2	ecobee Smart Thermostat Enhanced	$164.99	4.4	3,718		Touchscreen	Listed	Yes	ecobee	80
3	ecobee Smart Thermostat Essential	$109.99	4.2	1,897		Touchscreen	Not stated in bullets	Yes	ecobee	76
4	Sensi ST55	$99.99	4.4	23,081		Basic display	Not stated in bullets	No	Sensi	69
5	Honeywell Home RTH9585WF	$93.09	4.3	20,109		Color touchscreen	Listed	No	Honeywell Home	68
6	Honeywell Home RTH9600WF	$119.99	4.3	20,109		Color touchscreen	Listed	No	Honeywell Home	68
7	Sensi Touch 2 (ST76)	$166.59	4.3	1,252		Color touchscreen	Not stated in bullets	Yes	Sensi	68
8	Amazon Smart Thermostat	$56.99	4.0	25,542		Basic display	Required	No	Alexa	66
9	Honeywell Home T5	$80.99	4.3	1,521	Honeywell Home app (no assistants listed)	Touchscreen	Listed	No	Honeywell Home	60
10	Sensi Lite (ST25)	$68.48	4.0	2,358		Basic display	Listed	No	Sensi	59

Works with: hover or tap an icon for the system name. A system is shown when it supports the product directly or through the hub the listing requires. ecobee and Honeywell Home thermostats also have official Home Assistant integrations.

The full ranking

Scored out of 100: 45% customer rating, 30% review volume, 25% features.

Most Features

ecobee

ecobee Smart Thermostat Premium - WiFi, Siri & Alexa Built-In, Smart Sensor

4.3 4,179 reviews

Score 88/100

$209.99

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3K+ bought in past month

ecobee's top model doubles as a smart speaker and includes a room sensor.

Display: Touchscreen
C-wire: Listed
Remote sensors: Yes
Extras: Alexa and Siri built in, SmartSensor included
App: ecobee

Pros

Alexa and Siri built in
SmartSensor included
4,179 reviews

Cons

$209.99
Google isn't named in the bullets
Overkill if you won't use the speaker

Best Overall

ecobee

ecobee Smart Thermostat Enhanced, Programmable Wifi Thermostat

4.4 3,718 reviews

Score 80/100

$164.99

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3K+ bought in past month

The thermostat most people should buy: room sensor support and every major platform.

Display: Touchscreen
C-wire: Listed
Remote sensors: Yes
Extras: Works with SmartSensors
App: ecobee

Pros

Works with Apple Home, Alexa, Google, and SmartThings
Add SmartSensors to balance hot and cold rooms
3K+ bought in the past month, sold by Amazon

Cons

Sensors sold separately
$164.99
Check C-wire needs before buying

ecobee

ecobee Smart Thermostat Essential - WiFi Thermostat, Energy Star Certified

4.2 1,897 reviews

Score 76/100

$109.99

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4K+ bought in past month

ecobee's entry model, with Apple Home and sensor support for $109.99.

Display: Touchscreen
C-wire: Not stated in bullets
Remote sensors: Yes
Extras: Energy Star
App: ecobee

Pros

Apple Home, Alexa, and Google
4K+ bought in the past month
Energy Star certified

Cons

Fewer features than the Enhanced
4.2 stars
Sensors sold separately

Best Without Apps

Sensi

Sensi Smart Thermostat, Wi-Fi, DIY, Alexa, Energy Star Certified, ST55

4.4 23,081 reviews

Score 69/100

$99.99

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3K+ bought in past month

A straightforward, well-rated thermostat that's easy to install yourself.

Display: Basic display
C-wire: Not stated in bullets
Remote sensors: No
Extras: DIY install, Energy Star
App: Sensi

Pros

4.4 stars from 23,081 reviews
DIY install
3K+ bought in the past month, sold by Amazon

Cons

Only Alexa named in the bullets
Basic display
No remote sensors

Honeywell Home

Honeywell Home RTH9585WF1004 Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy Star, Alexa Ready, Gray

4.3 20,109 reviews

Score 68/100

$93.09

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A long-selling color touchscreen thermostat from Honeywell, with Alexa and Google.

Display: Color touchscreen
C-wire: Listed
Remote sensors: No
Extras: 7-day programming
App: Honeywell Home

Pros

Color touchscreen
Alexa and Google
20,109 reviews

Cons

No remote sensors
Not for electric baseboard heat
Older design

Honeywell Home

Honeywell Home RTH9600WF Smart Color Thermostat ENERGY STAR Wi-Fi Programmable Touchscreen Alexa Ready - C-Wire Required

4.3 20,109 reviews

Score 68/100

$119.99

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1K+ bought in past month

The updated Honeywell color touchscreen, Energy Star certified.

Display: Color touchscreen
C-wire: Listed
Remote sensors: No
Extras: Energy Star
App: Honeywell Home

Pros

Color touchscreen
Energy Star
1K+ bought in the past month, sold by Amazon

Cons

Only Alexa named in the bullets
No remote sensors
Not for electric baseboard heat

Sensi

Sensi Touch 2 Smart Thermostat Wi-Fi, Alexa, Energy Star Certified, ST76

4.3 1,252 reviews

Score 68/100

$166.59

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500+ bought in past month

Sensi's touchscreen model with sensor support.

Display: Color touchscreen
C-wire: Not stated in bullets
Remote sensors: Yes
Extras: Sensor support
App: Sensi

Pros

Color touchscreen
Sensor support
Sold by Amazon

Cons

$166.59
Only Alexa named in the bullets
4.3 stars

Best Budget

Amazon

Amazon Smart Thermostat, Save money and energy, Works with Alexa and Ring, C-wire required

4.0 25,542 reviews

Score 66/100

$56.99

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6K+ bought in past month

The cheapest way to a smart thermostat if you use Alexa and have a C-wire.

Display: Basic display
C-wire: Required
Remote sensors: No
Extras: Works with Ring
App: Alexa

Pros

$56.99 with 25,542 reviews
Sets up in the Alexa app
Works with Ring
6K+ bought in the past month

Cons

C-wire required
Alexa only
No remote sensors

Honeywell Home

Honeywell Home T5 Smart Wi-Fi Thermostat

4.3 1,521 reviews

Score 60/100

$80.99

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1K+ bought in past month

A simpler Honeywell smart thermostat for $80.99.

Display: Touchscreen
C-wire: Listed
Remote sensors: No
Extras: Energy Star
App: Honeywell Home

Pros

$80.99
1K+ bought in the past month
Energy Star

Cons

The listing doesn't name voice assistants
Sold by a third-party seller
No remote sensors

#10

Sensi

Sensi Lite Smart Thermostat, WiFi, Alexa, DIY, Energy Star Certified, ST25

4.0 2,358 reviews

Score 59/100

$68.48

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1K+ bought in past month

Sensi's cheapest model, for simple systems.

Display: Basic display
C-wire: Listed
Remote sensors: No
Extras: DIY install
App: Sensi

Pros

$68.48
2,358 reviews
DIY install

Cons

4.0 stars
Sold by a third-party seller
Only Alexa named

Buyer's guide

Do I need a C-wire?

Most smart thermostats need constant power from a C (common) wire. Some include a power adapter for homes without one, and a few run on batteries. Check your current thermostat's wiring before you buy.

Will it work with my heating and cooling system?

Most smart thermostats handle standard 24 V forced-air and heat pump systems. Line-voltage electric baseboard heaters need a different, line-voltage thermostat. Check the maker's compatibility checker before buying.

Do remote sensors matter?

If some rooms run hotter or colder than where the thermostat hangs, yes. Remote room sensors let the thermostat average temperatures or focus on the rooms you're using.

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