Smarter Comfort That Learns Your Home

The Google Nest Learning Thermostat (4th Gen) with Nest Temperature Sensor – Polished Obsidian combines intelligent climate control with a refined modern design.

The thermostat learns from your temperature adjustments and can build a Smart Schedule around how you use your home. Its energy-saving features help reduce unnecessary heating and cooling while still keeping your home comfortable.

Large, Modern Display

The 4th-generation Nest Learning Thermostat features a 2.68-inch circular LCD with 600 × 600 resolution.

The thermostat itself measures approximately 3.9 inches in diameter and 1.1 inches deep, giving it a larger visual presence than earlier Nest models while retaining the familiar circular Nest design.

Its Polished Obsidian finish gives it a dark, premium appearance suited to contemporary interiors.

Included Nest Temperature Sensor

The included Nest Temperature Sensor can be placed in another room so the thermostat can use temperature information from that area rather than relying only on the temperature at the thermostat itself.

This can help manage common hot and cold spots in bedrooms, living rooms, offices and other areas. Google confirms that the 4th-generation Learning Thermostat works with Nest Temperature Sensors.

Adaptive Eco

Adaptive Eco helps determine an energy-saving temperature based in part on outdoor conditions.

Instead of relying on one fixed Eco temperature in every situation, the thermostat can adapt its energy-saving behavior to changing conditions while helping your home return to a comfortable temperature when needed.

Smart Schedule

With Smart Schedule enabled, the thermostat can learn from temperature changes you make throughout the day and use those adjustments to help build and refine your heating and cooling schedule.

This reduces the need to continually program the thermostat manually.

Understands How Your Home Heats and Cools

The thermostat can learn how outdoor temperature affects indoor temperature and use that information to optimize operation.

Google and ADI describe features that can pause heating or cooling at appropriate times to help reduce energy use while maintaining comfort.

Control It From Google Home

The Nest Learning Thermostat 4th Gen is set up and managed through the Google Home app.

The app guides users through compatibility checks, installation and configuration, and allows temperature control from supported mobile devices.

Built-In Environmental Sensors

Google specifies several built-in sensors:

• Soli sensor for Motion Sense
• Temperature sensor
• Humidity sensor
• Ambient light sensor

These help the thermostat understand room conditions and how people interact with the device.

Multi-Stage HVAC Support

For conventional HVAC systems, the Nest Learning Thermostat 4th Gen supports up to 2 stages of cooling and up to 3 stages of heating.

For compatible heat-pump installations, Google supports multiple stages as well, including up to two stages of heat-pump heating plus alternate heating stages depending on the system configuration.

Designed for Compatible 24V Systems

The 4th-generation Nest Learning Thermostat is designed around compatible low-voltage HVAC systems.

Google’s Nest Power Connector documentation specifically notes compatibility with 24 VAC systems and states that millivolt and high-voltage systems are not compatible with the Power Connector. Customers should always verify their specific HVAC system before installation.

Professional installation is a good option when system wiring or compatibility is uncertain.

Key Features

Smart Learning
Learns from user temperature adjustments to help create a personalized schedule.

Adaptive Eco
Adjusts energy-saving temperatures using factors including outdoor conditions.

Included Temperature Sensor
Helps control comfort based on the temperature in another room.

Large 2.68-Inch Display
Circular 600 × 600 LCD provides a clear, modern interface.

Motion Sense
Built-in Soli sensing supports motion-aware functionality.

Google Home Control
Setup and everyday control are handled through the Google Home app.

Multi-Stage HVAC Support
Supports sophisticated conventional and heat-pump systems depending on configuration.