







Google Nest Smart Learning Thermostat 4th Gen (Polished Gold)
GA05171-US
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Google Nest Smart Learning Thermostat 4th Gen (Polished Gold)
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Watch as advanced features, intuitive design, and exceptional performance come together in real time.
Product Details
The Google Nest Learning Thermostat (4th Gen) is an ENERGY STAR® certified smart thermostat that learns your schedule, builds an automatic temperature plan, and helps reduce heating and cooling costs. A larger, borderless 2.7″ 600×600 mirrored LCD and redesigned dial make control effortless, while built-in Soli presence sensing enables features like Auto-Away and Dynamic Farsight to show temperature, weather, or clock from across the room. It connects over dual-band Wi-Fi for full control in the Google Home app and works with Matter (Wi-Fi) for broad smart-home compatibility. A Nest Temperature Sensor (2nd Gen) is included to prioritize comfort in the room that matters most.
Key Features
- Self-programming thermostat learns your schedule and auto-builds an energy-saving plan
- Dynamic Farsight with large, customizable readouts visible across the room
- Soli motion/proximity presence sensing for Eco/Away and glanceable info
- Matter (Wi-Fi) support via Google Home for multi-platform smart-home control
- Natural Heating & Cooling, Adaptive Eco, and Smart Ventilation to help optimize comfort and savings
- System Health Monitor alerts for issues and efficiency trends
- Expanded HVAC compatibility including multi-stage heat/cool, heat pumps with aux/emergency, and humidifier/dehumidifier control
- ENERGY STAR® certified; eligible for utility rebates in many regions
- Polished Obsidian finish with mirrored glass lens and premium metal dial
- Nest Temperature Sensor (2nd Gen) included to balance hot/cold spots
Featured Callouts
Borderless 2.7″ LCD shows temperature, weather, and more at a glance.
Add to Google Home and control with Matter-compatible apps and assistants.
Included room sensor helps prioritize the temperature where you spend time.
Supports multi-stage systems, humidifier/dehumidifier, fan, and ventilation.
Features
Learns & Optimizes Automatically
Nest builds a personalized schedule from the adjustments you make, then fine-tunes with features like Adaptive Eco and Natural Heating & Cooling that leverage outdoor conditions to save energy.
Dynamic Farsight & Soli Presence
The Soli sensor detects motion and proximity to wake the display with large, customizable cards—temperature, weather, or clock—while Auto-Away can switch to Eco when no one’s home.
Broader System Compatibility
Handles 1–3 stages of heat, 1–2 stages of cool, heat pumps with aux/emergency, fan, humidifier/dehumidifier, and ventilation on most 24-V systems (gas, electric, oil, forced air, radiant). C-wire is not required in most homes thanks to Nest Power Share.
Whole-Home Integration
Connect over 2.4/5 GHz Wi-Fi in the Google Home app, use Matter (Wi-Fi) for cross-ecosystem control, and coordinate multiple Nest products under one account.
System Health & Rebates
System Health Monitor can flag irregular behavior to help catch issues early. ENERGY STAR® certification supports utility rebates and rewards in many areas.
Included In The Box
- Nest Learning Thermostat (4th Gen) — Polished Gold
- Base plate, trim plate, and metal plate
- Nest Temperature Sensor (2nd Gen)
- Mounting screws (thermostat & sensor) and wiring labels
- Quick Start Guide; Safety/Warranty & Regulatory Guide
- Limited 2-Year Manufacturer Warranty
Technical Specifications
Model / Finish | Nest Learning Thermostat (4th Gen) — Polished Obsidian |
---|---|
Display | 2.7″ circular LCD, 600 × 600 px, mirrored glass lens |
Presence Sensing | Soli motion & proximity (Dynamic Farsight, Auto-Away) |
Wireless | Dual-band Wi-Fi 802.11n (2.4/5 GHz) |
Smart Home | Matter (Wi-Fi) via Google Home; Works with Google Assistant |
Sensors | Temperature, humidity, ambient light; Soli presence |
HVAC Compatibility | Most 24-V systems: gas, electric, oil, forced air, heat pump (aux/EM), radiant |
Stages / Terminals | Up to 3-stage heat, 2-stage cool; terminals include HUM/DEHUM, W3, fan, power |
Power | 20–30 VAC, 50/60 Hz; Power Share; C-wire optional in most homes |
Operating Modes | Comfort, Sleep, Eco, Custom schedules |
Energy Features | Natural Heating & Cooling, Adaptive Eco, Smart Ventilation, System Health Monitor |
Dimensions / Weight | 3.9 × 3.9 × 1.1 in (98 × 98 × 29 mm); 5.7 oz (162 g) |
Network / App | Google Home app for iOS & Android; over-the-air updates |
Certifications | ENERGY STAR® |
Color Options | Polished Obsidian, Polished Silver, Polished Gold |
Package Dimensions / Weight | Approx. 7.55 × 5.95 × 2.5 in; 1.49 lb (packaged) |
Included in the Box