Nest Learning Thermostat, 3rd Generation, Works with Alexa Review

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Nest Company was the pioneer that created the smart thermostat market. Launched in October2011, the Nest Learning Thermostat is the brainchild of two ex-Apple engineers. Their idea was to bring HVAC controls into the computerized, networked 21st century. Turns out the ability to control the home temperature without requiring programming more complex than a graduate degree, and more flexible than just "on or off", is enough to tempt not only customers but Net’s competitors. Now Nest’s market is under attack. So can they keep making the latest 3rd generation of the Nest Learning Thermostat better?

The Good

  • Run smoothly and efficiently
    In a word, flawless. The most critical function is turning on and off the HVAC system when the temperature deviates a certain amount from the set point (the reputed +/- 1.5 degree differential). The Nest does that perfectly as near as I can tell.
  • Auto schedule
    Learn your home heating and cooling needs and program itself accordingly is the great ability only Nest does have.
    You don’t even need to read instruction or ask your friend how to set up the temperature schedule with Nest. Every time you raise or lower the heat, Nest records your activities and analyzes them. After a couple of days, the learning menu begins to show what the thermostat has picked up. And it considers the weather to alter the temperature
  • Save your energy cost
    It says could save you as much as $490 a year on your energy bills. Independent studies have proven that the Nest Learning Thermostat saved an average of 10-12% on heating bills and 15% on cooling bills. That means that in two years, it can pay for itself. So, how can Nest do that?
    • Auto Away feature: By motion sensors and GPS tracking, Nest knows when you are away and how near you are to home. It automatically shuts down your heating or cooling when you leave the house. The first-generation device took about 2 hours to declare you "away", but the new Nest learns your family's patterns more precisely. Auto-Away works in 90% of houses, even if Nest is in a spot you do not pass on the way out the door. And 75% of houses go in to Auto Away at least once a week.​
    • Airwave feature: Air wave automatically lowers your AC run time when humidity in your home is not too high. It runs the fan longer when AC compressor turns off to seek out more cold air, means it cuts your energy bill while keeping your home cool.
    • ​The ability to calculate time to heat or cool temperature (based on the heating and cooling units): Called System Match, the settings tell your Nest to make choices following the type of HAVC system in your house. The Nest then uses the time-to- temp calculations to bring specific types of systems online when it's appropriate for that technology. So, for instance, a radiant heating system that may take 30 minutes to raise the temperature 5 degrees in your home will come on well before your desired temperature change to make sure the house is comfortable exactly when you want it that way.
    • ​Filter change reminder: If you're blindly replacing your filter every two months, regardless of usage, you're wasting money. Luckily, Nest can help you with that.
  • Control your house temperature anytime and anywhere
    Being able to control everything from the application on your computer/ table/smart phone (iOS 8 or later, or Android 4 or later) itself is so awesome (fan, cooling/heating mode, humidity level, away/home mode, set a schedule,history, etc..). So that you don't have to go all the way upstairs to turn the unit on, just set it to turn on several minutes before I go upstairs, or even get home
  • ​Works with Alexa for voice control
    With Amazon Alexa, there’s no need to go to your thermostat or find your phone, just talk to Alexa on your Amazon Echo, Fire TV, Tap or Echo Dot. You can set a specific target temperature or raise or lower by just saying, for example: Alexa, make my “thermostat name” warmer by 4 degrees.
  • Super easy installation
    Most people install the Nest Thermostat in 30 minutes or less. Nest does everything possible to help with a DIY installation. It includes stickers in the installation guide to label which wires go where, and the Nest’s LCD display will even alert you to any wiring faults. If you ever need help, call 24/7 support.
  • Compatible with most of HAVC systems
    Nest works with 95% of 24V heating and cooling systems, including gas, electric, forced air, heat pump, radiant, oil, hot water, solar and geothermal. In case your HAVC is too old, maybe only the traditional thermostat can fit it.
  • ​No need C-wire
    Some people also buy Nest because it doesn’t need C wire to connect the cooling system. Nest has an internal, non-user- replaceable battery that it uses to keep its Wi-Fi radio connected and monitor movement in the home, topping up the charge whenever the HVAC is turned on. I also quite like the message from Nest website or mobile application whenever this device is about out of battery.
  • ​Elegant and simple design
    With Apple-like cover and the stainless ring cover, having Nest Learning Thermostat on the wall seems to make your house become more modern and brighter.

The improvement compared to the previous generation

  • The more beautiful design: The next-gen Nest Learning Thermostat has a thinner, sleeker design; a bigger, sharper display and a better resolution. It has a 40 percent larger screen and an improved resolution for better all-around visibility. (Specifically, the display has 229 pixels per inch; that’s 25 percent more than its predecessor, which should make for a sharper on-screen image). And, Nest slimmed down the thermostat’s profile so it won’t stick out from the wall as much. The 3 rd generation Nest Learning Thermostat is more beautiful than ever.
  • The far sight feature: On the 2nd generation units, you sometimes have to stand there and wave your hand in front of them to wake up, but this 3rd gen unit wakes up even when you several feet away (up to 12 feet). You can be clear across the room and it wakes up, which is great especially when the clock display is enabled.
  • Furnace Heads-Up: This feature is essential for those with a forced-air furnace system. It keeps track of the times your forced-air furnace automatically turns off to prevent overheating. And, if it senses that there’s a potential issue, it will alert you in the Nest app, on the thermostat screen or in your monthly energy usage email. Nest says it will add this feature to first- and second-generation Nest thermostats "later this year".

The bad

  • High price: The 3rd Nest Generation still has the higher price compared to other WiFi-enabled thermostats (for around $100 these days). But with all convenient functionalities which Nest give you and when the house costs $500K, $250 was just a drop in a tub.
  • Lacks HomeKit compatibility: Rivals around the same price as Nest, like Ecobee, offer remote temperature sensors. This allows you to closely monitor temperatures on a room-by-room basis. Let’say you set your thermostat to 72F, but the remote-temperature sensor in your kitchen says it's 75F, you can then adjust your thermostat so that it cools until your kitchen actually reaches the target temperature.
    The sensor that detects whether you are in the house or not to turn the system off or on, is in the thermostat itself. This means that the Nest needs to be positioned in a room where the main activity takes place.
    However, if your house is not too big or you have more than 01 Nest (for two HAVC systems), it won’t be problem.


The 3rd generation of the Nest Learning Thermostat is the great wifi thermostat you cannot ignore. If you love the look and feel of high-end design as well as money which Nest will save for you, you won't regret the investment. I willingly give Nest 9.5/10 because of all wonderful features it shows.

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