The Nest Smart Learning Thermostat 3rd Generation Review

Nest Smart Thermostat Review

Introduction of Nest 3rd Generation Smart Thermostat

Nest Labs or Nest for short is a subsidiary of Google’s new company called Alphabet. Nest wasn’t always under Google as it was actually founded by former Apple engineers Tony Fadell and Matt Rogers five years ago. In January of last year Google acquired Nest Labs for a whopping $3.2 billion and the company has continued to grow and innovate products in the smart home space.

Their first and still most popular product is the Nest Smart Thermostat, which is now in its 3rd generation that has been improved upon over the years with new features and more streamlined design while keeping the retro rounded look that it’s always had.

Nest not only has smart thermostats but also Nest Protect smoke and carbon monoxide alarms, and also Nest Cam for home surveillance, all of which work with each other to make your home, a smart home.

Here’s a quick comparison of the 1st, 2nd, and 3rd Generation Nest thermostats comparing some of the features between them.

Nest Thermostat Comparison 1st vs 2nd vs 3rd Generation

3rd generation
2nd generation
1st generation
3.25 inch screen diameter 2.75 inch screen diameter 2.75 inch screen diameter
Seamless all-steel ring Seamless all-steel ring Visible seam in ring
Slimmer profile Slimmer profile Thicker profile
Sensors hidden behind smaller opaque window Sensors hidden behind opaque window Sensor grille at the bottom of the display

When the Nest Gen 1 was introduced, it was a great and like nothing else anyone had seen before when it came to a smart thermostat. However, with that greatness still came some issues and lack of features or maybe better put, room for future enhancements.

The Nest Gen 2 major selling point was being 20% slimmer than the Nest Gen 1 but it also provided additional support for hybrid heating systems, humidstats, and stage 1-3 heating and stage 1-2 cooling systems. It supported just about any type of home heating or cooling system on the market. There were also numerous of other improvements with the way that it could ensure your home was warm or cool when it needed to be.

Then finally we get to the Nest Gen 3 thermostat that we’ll be looking at today. The latest generation thermostat from Nest really ups their game with the display by providing a 480×480 display with a 229 pixels per inch resolution to make things even easier to read, especially at a distance. They also included sensors that knows when you are looking at it, so it can display information and made easy to read from a far distance.

Not only was the display improved, they have also added Bluetooth LE and 5GHz WiFi support all while decreasing the size down to 1.21 inches in depth.

So will all of the new features and improvements be worth the money to upgrade over an existing standard thermostat? Read on and lets find out!

Nest Smart Thermostat 3rd Gen Features


Stainless steel


  • 24-bit color LCD
  • 480 x 480 resolution at 229 pixel per inch (PPI)
  • 2.08 in (5.3 cm) diameter


  • English
  • French
  • Spanish
  • Dutch


The Nest Learning Thermostat works with 95% of 24V heating and cooling systems, including gas, electric, forced air, heat pump, radiant, oil, hot water, solar and geothermal.

  • Heating: 1,2, and 3 stages (W1, W2, W3)
  • Cooling: 1 and 2 stages (Y1, Y2)
  • Heat pump: with auxiliary and emergency heat (O/B, AUX, E)
  • Humidifier or dehumidifier (HUM, DEHUM)
  • Fan (G)
  • Power (C, RH, RC)


  • Temperature
  • Humidity
  • Near-field activity
  • Far-field activity
  • Ambient light


  • Wi-Fi 802.11b/g/n @ 2.4GHz, 5GHz
  • 802.15.4 @ 2.4GHz
  • Bluetooth Low Energy (BLE)

Size and weight


  • Mass: 7.25 oz (205.4 g)
  • Diameter: 3.3 in (8.4 cm)
  • Height: 1.06 in (2.69 cm)


  • Mass: 1.35 oz (38.3 g)
  • Diameter: 3 in (7.6 cm)
  • Height: 0.42 in (1.1 cm)


  • Mass: 8.6 oz (243.7 g)
  • Diameter: 3.3 in (8.4 cm)
  • Height: 1.21 in (3.08 cm)


Built-in rechargeable lithium-ion battery


Less than 1 kWh/month

Remote control

  • Wi-Fi connection with Internet access
  • Nest app on phone or tablet with iOS 8 or later, or Android 4 or later
  • Latest version of Safari, Chrome, Firefox or Internet Explorer on Mac OS X v10.9 or later and Windows 7 or later

Multi-Home Support

Multi-zone homes You can control up to 20 thermostats per home. They’ll work together to save energy and coordinate Auto-Away.

Nest in two homes You can control Nest Thermostat in two locations from one Nest account. Check the temperature in your office and turn up the AC on your way there.


  • 2-year limited warranty.

In the box

  • Display
  • Base
  • Optional trim kit
  • Mounting screws and labels
  • Nest screwdriver
  • Installation Guide
  • Welcome Guide
  • Nest Pro installation card

Read on to the next page and we’ll unbox the Nest Thermostat 3rd Generation!

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About The Author

James is the owner and editor-in-chief of Geek Inspector. He enjoys technology, motorcycles, traveling, and spending time with his family.

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