Nest Learning Thermostat 3rd Gen vs 4th Gen: A Comprehensive Comparison of Design, Features, and Energy Savings
The Google Nest Learning Thermostat has evolved significantly from its 3rd generation (3rd Gen) model to the 4th generation (4th Gen). While both models offer smart temperature control and energy-saving features, the 4th Gen introduces several improvements in design, functionality, and integration. Below is a breakdown of the key differences between the Nest Learning Thermostat 3rd Gen and 4th Gen.
1. Design and Display
Nest 3rd Gen:
Size: The 3rd Gen has a slightly larger display at 3.3 inches.
Resolution: 480 x 480 pixel display with 229 ppi.
Display Type: High-resolution, full-color display.
Build: The 3rd Gen has a metal ring around the thermostat, available in multiple finishes, but is slightly bulkier compared to the 4th Gen.
Nest 4th Gen:
Size: The 4th Gen features a slightly smaller display at 3.1 inches.
Resolution: 480 x 480 pixel resolution, maintaining the same clarity as the 3rd Gen.
Display Type: Same vibrant, full-color display, but with improvements in clarity and brightness.
Build: The 4th Gen is designed with a sleeker, thinner profile and a more refined, minimalist design. The metal ring is thinner and more modern looking. Available in new finishes, including Polished Steel and Matte Black, in addition to traditional Copper and Stainless Steel.
2. Temperature Control and Sensor Technology
Nest 3rd Gen:
Sensors: Features a single sensor for ambient temperature and humidity sensing.
Auto-Schedule: The 3rd Gen uses machine learning to create custom schedules based on your routine.
Nest Sense: Includes smart features like Home/Away Assist, which adjusts the temperature when you’re not home, and Farsight that lights up the display when it detects motion.
Nest 4th Gen:
Improved Sensors: The 4th Gen boasts dual sensors, including a more advanced humidity sensor and a more accurate motion detection system.
Temperature Accuracy: Improved temperature control with better precision, adjusting faster and more accurately to the user’s habits.
Air Quality: In the 4th Gen, you can also track air quality levels in your home, making it more comprehensive for your environment’s needs.
3. Wi-Fi and Integration
Nest 3rd Gen:
Wi-Fi: Dual-band Wi-Fi support (2.4 GHz & 5 GHz).
Voice Integration: Works with Google Assistant and Amazon Alexa.
Mobile App: Full control through the Google Home app or Nest app.
Third-Party Integration: Integrates well with smart home systems, but less seamless compared to newer systems.
Nest 4th Gen:
Wi-Fi: Also supports dual-band Wi-Fi (2.4 GHz & 5 GHz), but with improved connectivity for faster responses and fewer disruptions.
Smarter Integration: Offers more robust integration with Google Home and Assistant. The 4th Gen can be part of the Google Home ecosystem with deeper integration, allowing control through voice, scenes, and routines.
Better Setup: The 4th Gen features an easier setup process, with auto-detection of wiring types and faster connection to the app.
4. Energy Efficiency and Savings
Nest 3rd Gen:
Provides Energy History, Energy Saving Tips, and uses Nest Leaf to show you when you're saving energy.
Smart Schedules: Automatically adjusts temperature settings based on your habits, potentially saving up to 15% on heating and up to 20% on cooling costs.
Nest 4th Gen:
Enhanced energy-saving features with smarter algorithms that learn more quickly and adjust temperatures faster to optimize energy usage.
The 4th Gen is even better at tracking energy consumption and showing you where and how you can improve efficiency, thanks to more detailed monthly energy reports.
Increased savings potential with better predictive analytics of heating and cooling patterns.
5. Smart Features & Functionality
Nest 3rd Gen:
Auto-Schedule learns from your behaviour and builds a custom schedule over time.
Home/Away Assist uses sensors to detect when you’re home or away to save energy.
Farsight: Shows the temperature or time when it detects motion.
Nest 4th Gen:
Faster Learning: The 4th Gen learns more quickly and adapts faster to your routines with AI-driven algorithms.
Remote Temperature Control: Improved remote access with Google Home integration, allowing you to manage settings through both the Nest app and Google Home app, as well as via Google Assistant.
Improved Voice Control: Responds more quickly to voice commands and offers more nuanced control via Google Assistant.
Improved "Home/Away" Features: More intelligent geofencing and better temperature predictions when you’re away.
6. Compatibility
Nest 3rd Gen:
Works with most HVAC systems (including heat pumps, central air, and forced air systems) but might require a C-wire for some installations.
Nest 4th Gen:
Broader compatibility with smart home systems, including Google Nest Protect, Google Nest Cam, and Google Home devices.
Better support for newer home HVAC systems, especially dual-stage systems (heating and cooling).
7. Price
Nest 3rd Gen: Typically priced lower than the 4th Gen, though prices can vary based on sales or promotions.
Nest 4th Gen: As a newer model, the 4th Gen carries a higher price point due to the improved technology and design.
Summary of Key Differences:
FeatureNest 3rd GenNest 4th GenDesignLarger, bulkier metal ringThinner, sleeker, refined designDisplay3.3-inch, 480x480, 229 ppi3.1-inch, 480x480, improved claritySensorsSingle sensorDual sensors (improved accuracy)Wi-FiDual-band Wi-Fi (2.4 GHz & 5 GHz)Improved Wi-Fi connectivityVoice ControlGoogle Assistant & Alexa support google Assistant, deeper integration with Google HomeEnergy SavingSmart schedules, Energy HistorySmarter algorithms for energy savings earning SpeedGradual learning faster learning and adaptionPriceLower price higher price due to improvements
Conclusion:
The Nest Learning Thermostat 4th Gen offers more refined design, faster learning, and smarter features compared to the 3rd Gen, making it the better option if you’re looking for cutting-edge technology and integration with the Google Home ecosystem. However, if you’re on a budget and don’t mind the slightly older tech, the Nest 3rd Gen still provides excellent functionality at a more affordable price.
