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Smart Thermostats

Expert Picks for March 2026

Best Smart Thermostats

Save money and energy with intelligent climate control. Smart thermostats learn your schedule and optimize comfort automatically.

Last updated: March 9, 2026
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Best Overall Our top recommendation
Best Overall
ecobeeSmart Si Thermostat 2 Heat-2 Cool with Full Color NON-Touch Screen

ecobeeSmart

ecobeeSmart Si Thermostat 2 Heat-2 Cool with Full Color NON-Touch Screen

4.5 (3,701 reviews)

ecobeeSmart Si Thermostat 2 Heat-2 Cool with Full Color NON-Touch Screen

Brand

ecobeeSmart

ASIN

B008F40R4C

Pros

  • Highly rated
  • Excellent quality
  • Great value

Cons

  • Check compatibility
  • Verify dimensions

Head-to-Head Comparison

ProductRatingPrice Action
ecobeeSmart Si Thermostat 2 Heat-2 Cool with Full Color NON-Touch Screen
ecobeeSmart Si Thermostat 2 Heat-2 Cool with Full Color NON-Touch Screen Best
ecobeeSmart
4.5
Check Price View
Honeywell HomeRTH6580WF Wi-Fi 7-Day Programmable Thermostat, WhitemerossSmart Thermostat for Home, WiFi Thermostat Wo
Honeywell HomeRTH6580WF Wi-Fi 7-Day Programmable Thermostat, WhitemerossSmart Thermostat for Home, WiFi Thermostat Wo
Honeywell
4.6
Check Price View
ecobee3 Smarter Wi-Fi Thermostat with Remote Sensor, 2nd GenerationecobeeSmart Si Thermostat 2 Heat-2 Cool with Full C
ecobee3 Smarter Wi-Fi Thermostat with Remote Sensor, 2nd GenerationecobeeSmart Si Thermostat 2 Heat-2 Cool with Full C Value
ecobee3
4.7
Check Price View
Nest Learning Thermostat 3rd Generation (Professional Version -Model # T3008US)Sensi Lite Smart Thermostat, Data Privac
Nest Learning Thermostat 3rd Generation (Professional Version -Model # T3008US)Sensi Lite Smart Thermostat, Data Privac
Nest
4.8
Check Price View
GoogleNest Learning Thermostat (4th Gen, 2024) with Nest Temperature Sensor - Energy Saving Smart Thermostat - Compatib
GoogleNest Learning Thermostat (4th Gen, 2024) with Nest Temperature Sensor - Energy Saving Smart Thermostat - Compatib
GoogleNest
4.5
Check Price View
ecobeeEB-STATe3L-01 3 Lite Thermostat, Wi-Fi, Works with Amazon AlexaNest T4000ES E Hubless Smart ThermostatC Wire Ad
ecobeeEB-STATe3L-01 3 Lite Thermostat, Wi-Fi, Works with Amazon AlexaNest T4000ES E Hubless Smart ThermostatC Wire Ad
ecobeeEBSTATe3L01
4.6
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EmersonSensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy Star Certified, C-wi
EmersonSensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy Star Certified, C-wi
EmersonSensi
4.7
$141.32 View
Sensi Smart Thermostat, 100 Years Of Expertise, Wi-Fi, Data Privacy, Programmable, Easy DIY Install, Works With Alexa, E
Sensi Smart Thermostat, 100 Years Of Expertise, Wi-Fi, Data Privacy, Programmable, Easy DIY Install, Works With Alexa, E
Sensi
4.8
$141.32 View

* Prices may vary. As an Amazon Associate, we earn from qualifying purchases.

All Recommended Products

Best Overall
ecobeeSmart Si Thermostat 2 Heat-2 Cool with Full Color NON-Touch Screen

ecobeeSmart

ecobeeSmart Si Thermostat 2 Heat-2 Cool with Full Color NON-Touch Screen

4.5 (3,701 reviews)

ecobeeSmart Si Thermostat 2 Heat-2 Cool with Full Color NON-Touch Screen

Brand

ecobeeSmart

ASIN

B008F40R4C

Pros

  • Highly rated
  • Excellent quality
  • Great value

Cons

  • Check compatibility
  • Verify dimensions
Premium Pick
Honeywell HomeRTH6580WF Wi-Fi 7-Day Programmable Thermostat, WhitemerossSmart Thermostat for Home, WiFi Thermostat Wo

Honeywell

Honeywell HomeRTH6580WF Wi-Fi 7-Day Programmable Thermostat, WhitemerossSmart Thermostat for Home, WiFi Thermostat Wo

4.6 (6,065 reviews)

Honeywell HomeRTH6580WF Wi-Fi 7-Day Programmable Thermostat, WhitemerossSmart Thermostat for Home, WiFi Thermostat Wo

Brand

Honeywell

ASIN

B00Y6M2OUC

Pros

  • Highly rated
  • Excellent quality
  • Great value

Cons

  • Check compatibility
  • Verify dimensions
Best Value
ecobee3 Smarter Wi-Fi Thermostat with Remote Sensor, 2nd GenerationecobeeSmart Si Thermostat 2 Heat-2 Cool with Full C

ecobee3

ecobee3 Smarter Wi-Fi Thermostat with Remote Sensor, 2nd GenerationecobeeSmart Si Thermostat 2 Heat-2 Cool with Full C

4.7 (7,484 reviews)

ecobee3 Smarter Wi-Fi Thermostat with Remote Sensor, 2nd GenerationecobeeSmart Si Thermostat 2 Heat-2 Cool with Full C

Brand

ecobee3

ASIN

B00ZIRV39M

Pros

  • Highly rated
  • Excellent quality
  • Great value

Cons

  • Check compatibility
  • Verify dimensions
Budget Pick
Nest Learning Thermostat 3rd Generation (Professional Version -Model # T3008US)Sensi Lite Smart Thermostat, Data Privac

Nest

Nest Learning Thermostat 3rd Generation (Professional Version -Model # T3008US)Sensi Lite Smart Thermostat, Data Privac

4.8 (6,823 reviews)

Nest Learning Thermostat 3rd Generation (Professional Version -Model # T3008US)Sensi Lite Smart Thermostat, Data Privac

Brand

Nest

ASIN

B015TJA0GA

Pros

  • Highly rated
  • Excellent quality
  • Great value

Cons

  • Check compatibility
  • Verify dimensions
GoogleNest Learning Thermostat (4th Gen, 2024) with Nest Temperature Sensor - Energy Saving Smart Thermostat - Compatib

GoogleNest

GoogleNest Learning Thermostat (4th Gen, 2024) with Nest Temperature Sensor - Energy Saving Smart Thermostat - Compatib

4.5 (6,777 reviews)

GoogleNest Learning Thermostat (4th Gen, 2024) with Nest Temperature Sensor - Energy Saving Smart Thermostat - Compatib

Brand

GoogleNest

ASIN

B01HHQZHRK

Pros

  • Highly rated
  • Excellent quality
  • Great value

Cons

  • Check compatibility
  • Verify dimensions
ecobeeEB-STATe3L-01 3 Lite Thermostat, Wi-Fi, Works with Amazon AlexaNest T4000ES E Hubless Smart ThermostatC Wire Ad

ecobeeEBSTATe3L01

ecobeeEB-STATe3L-01 3 Lite Thermostat, Wi-Fi, Works with Amazon AlexaNest T4000ES E Hubless Smart ThermostatC Wire Ad

4.6 (7,880 reviews)

ecobeeEB-STATe3L-01 3 Lite Thermostat, Wi-Fi, Works with Amazon AlexaNest T4000ES E Hubless Smart ThermostatC Wire Ad

Brand

ecobeeEBSTATe3L01

ASIN

B01K48T09Y

Pros

  • Highly rated
  • Excellent quality
  • Great value

Cons

  • Check compatibility
  • Verify dimensions
EmersonSensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy Star Certified, C-wi

EmersonSensi

EmersonSensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy Star Certified, C-wi

4.7 (4,106 reviews)

EmersonSensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy Star Certified, C-wi

Brand

EmersonSensi

ASIN

B01N3CEUDH

Pros

  • Highly rated
  • Excellent quality
  • Great value

Cons

  • Check compatibility
  • Verify dimensions
Sensi Smart Thermostat, 100 Years Of Expertise, Wi-Fi, Data Privacy, Programmable, Easy DIY Install, Works With Alexa, E

Sensi

Sensi Smart Thermostat, 100 Years Of Expertise, Wi-Fi, Data Privacy, Programmable, Easy DIY Install, Works With Alexa, E

4.8 (7,086 reviews)

Sensi Smart Thermostat, 100 Years Of Expertise, Wi-Fi, Data Privacy, Programmable, Easy DIY Install, Works With Alexa, E

Brand

Sensi

ASIN

B01NB1OB0I

Pros

  • Highly rated
  • Excellent quality
  • Great value

Cons

  • Check compatibility
  • Verify dimensions

Buying Guide: How to Choose Smart Thermostats

Consider your needs, budget, and preferred features when choosing.

Frequently Asked Questions About Smart Thermostats

Which is the best option?

Our top pick is ecobeeSmart Si Thermostat 2 Heat-2 Cool .

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