Google Nest Learning Thermostat (4th gen) review

The fourth-generation Nest Learning Thermostat is the most hands-off option here. Smart Schedule learns the temperatures you set and when, then suggests small changes in the Google Home app to save more. Adaptive Eco picks an efficient temperature when you leave, a Soli sensor detects motion, and natural heating and cooling uses the outdoor temperature to avoid running the system on sunny days. Google says the Learning Thermostat can save up to 31% on heating and cooling bills. A Nest Temperature Sensor (2nd gen) comes in the box, and you can add up to six. Wiring support is the broadest on the list: up to 3 stages of heat and cool, heat pumps with auxiliary heat, and humidifier, dehumidifier and ventilation control, with Power Sharing that avoids a C wire in almost every home. At $279.99 it costs the most here, and the retail warranty is 2 years. We compared documented features and published prices.

Who it is for

Google Home users who want a thermostat that programs itself and works without a C wire.

Price

$279.99 on the Google Store US when checked, with one Nest Temperature Sensor.

Buy Nest Learning Thermostat (4th gen) $279.99 or $23.33/month with 12-month financing
Quoted from the vendor pricing page on November 9, 2026.

Key features

• Smart Schedule learns the temperatures you like and when you like them
• Nest Temperature Sensor (2nd gen) included, with support for up to six
• Adaptive Eco and natural heating and cooling that accounts for outdoor weather
• System Health Monitor alerts you to HVAC problems early
• Power Sharing works without a C wire in all but under 1% of cases

Strengths and weaknesses

• Strength: Google says Nest Learning can save up to 31% on heating and cooling bills
• Strength: Controls up to 3 stages of heat and cool plus humidifier, dehumidifier and ventilation
• Strength: Works with Google Home and Matter
• Weakness: Most expensive thermostat on this list
• Weakness: Setup requires the Google Home app
• Weakness: 2-year retail warranty, shorter than ecobee and Mysa

Key facts

• Savings claim: Up to 31%
• Room sensor: 1 included, up to 6
• C wire: Not needed in most homes
• Warranty: 2 years

Where it ranks

Google Nest Learning Thermostat (4th gen) is No. 3 in our Best Smart Thermostats verdict.