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The Nest Learning Thermostat (4th gen) is Google’s smartest, most advanced thermostat yet. It’s a beautiful way to save energy. It learns the temperatures you like, when you like them, even as your routine changes.[1] And it helps make sure your heating and cooling systems run smoothly.
Nest’s smartest, most advanced thermostat yet, the Google Nest Learning Thermostat (4th gen) is a beautiful, brilliant way to save energy, keep your home comfortable, and help make sure your heating and cooling systems are running smoothly[4]
Improved compatibility: It works with most 24V systems, including gas, electric, oil, forced air, heat pump, and radiant, and no C wire is required for installation in most homes; visit the Nest Compatibility Checker for more info[5]
Easy control in the Google Home app: Adjust on your phone from anywhere[1] or by using your voice with Alexa, Siri, or Google Assistant smart speaker[3], it’s easy to install yourself and it’s Matter compatible for simple integration into your smart home[5]
Beautiful design: With a 60% larger display[11] and Dynamic Farsight, you can see info from across the room[1]; choose the design, like a clock or the weather; it automatically adjusts brightness for the best readability or you can adjust manually
Better visibility into adjustments: Asks for permission to make schedule changes to help you save energy; you’ll receive notifications in the Google Home app, and you can view and accept changes with a tap[1]
Manage hot and cold spots: It comes with the Nest Temperature Sensor (2nd gen) and works with any Nest Temperature Sensor; put a sensor in any room and use the Google Home app to set the temp it should reach at a certain time of day
Savings you can count on: The Nest Learning Thermostat (4th gen) can help save an average of 12% on heating bills and 15% on cooling bills[2]
New natural heating and cooling: Your thermostat learns how the temperature outside affects the temperature inside (for example, when the sun coming through the windows will heat the house naturally) and pauses your system to help you save[1]
New Adaptive Eco: It uses the temperature outside to help find an energy-saving temperature when you’re away and returns to a comfortable temperature within an hour of your return[1]
Please refer to the “Legal” section below for all applicable legal disclaimers denoted by the bracketed numbers in the preceding bullet points (e.g., [1], [2], etc.)
C. Taylor –
It actually made my old apartment feel futuristic
First ImpressionsI live in an older apartment where wiring is… let’s just say vintage. No powered “C-wire” or whatever the pros call it, so I half-expected this Nest to laugh in my face. Instead, it installed easily and worked like a charm—no extra adapters, no electrician visit, just smooth sailing.PerformanceLearns fast. Within a few days, it figured out my routine and started adjusting temps automatically. Now it feels like the thermostat knows me better than my landlord.Eco mode. The adaptive energy-saving feature keeps the bills from looking like a ransom note, which is a big win.Temperature sensor. Handy little add-on that makes sure the whole place is comfortable, not just the hallway where the thermostat lives.IntegrationWorks seamlessly with Alexa and Google Home—I can bark orders at it from the couch without lifting a finger.The Google Home app makes remote adjustments stupid-easy. Forgot to turn down the heat before leaving? Fixed in two taps.DesignThe Polished Obsidian finish looks slick. It’s the one piece of tech in my apartment that actually makes the place feel modern instead of “grandma-chic.”ProsWorks perfectly even without a powered line (C-wire).Learns habits quickly and adjusts intelligently.Saves energy without me thinking about it.Easy integration with Alexa and Google Home.Sleek design that looks expensive.ConsIf you’re not tech-friendly, setup might take a minute (but once it’s in, it’s golden).Bottom LineThis thing is smart, stylish, and makes my old apartment feel brand new. It saves energy, keeps me comfortable, and didn’t require rewiring the building.
Johnathan W. –
Best Nest product I’ve had yet!
New to the Google home app/software, but works perfectly! I love that I can have multiple devices linked to it to use the “presents” feature. And im a very hot sleeper so being able to put the remote temp sensor right next to my head at night has been a total game changer!
Pete –
It just works and easily.
I had a boiler and AC on separate units, old wiring, no c-wire, this magic thermostat allowed me to combine them! It works, it just works, it is quality make, good design, and honestly the easiest to use in the industry. Sure it probably has hidden spy features but what doesn’t.
IMR –
May not work in HVAC systems without a C wire, when the 3rd Gen Nest Thermostat will
When one of our 3rd Gen Nest Thermostats stopped working, I decided to replace it with a 4th Generation Nest unit. Oddly, the mounting hardware for the 4th Generation is completely different from the 3rd Generation, which is annoying. The wiring backplate is incompatible, as the 4th Generation has a different electrical connector to the thermostat. One nice thing about the new backplate is that there is a light built into the bubble level which signals voltage on the Rh or Rc wires from the HVAC unit, implying you won’t need a dedicated C wire for power. Unfortunately, this is many times not the case for the 4th Generation, lit bubble level or not.When I properly mounted and connected the 4th Generation thermostat, the setup app on my phone reported that there was “no power” on the R wire, even though the bubble level was lit, and I could measure the voltage on a multimeter. There was no way to get around the error message in the app. A call to Google support was completely useless. The support person clearly didn’t know why the setup app falsely reported “no power”, or whether or not the 4th Generation thermostat required higher voltage on the R wires than the 3rd Generation thermostat for operation without a C wire.An internet search revealed numerous people posting on Reddit and other web sites of the same issue I was having. How could Google support not be aware of this? Depending on your view, the difference between the R wire voltage requirements for the 4th Generation from the 3rd Generation thermostats is either an undocumented design change, or a design flaw. Personally, I consider it a significant design flaw, especially that it is not documented in the setup instructions, and there is no warning of this anywhere in Google’s documentation.After spending about two hours removing the 3rd Generation mount, installing the 4th Generation mount, waiting for the callback from Google, and figuring out the root cause myself, I unmounted the 4th Generation Nest, packaged it back up, and returned it. I ordered a new 3rd Generation Nest from Amazon, and it works flawlessly with the HVAC unit.One attraction of the 4th Generation Nest is that the “maintenance band”, the temperature variance range at which the AC compressor cycles on and off, is manually programmable, while on the 3rd Generation Nest it is not. There have been complaints that the 3rd Generation Nest’s maintenance band is only two degrees F wide, which in some climates and homes cycles the compressor too often, and is blamed for excess wear and premature failure on the compressor. (AC units and heat pumps both use compressors.) So if you have a C wire in your compressor-based system, I recommend trying to use a 4th Generation Nest. Another trick which works with both generations is to use a remote sensor in a different part of the room or another room where the ambient temperature doesn’t vary as quickly, to reduce compressor cycling. I use this trick for our 3rd Generation Units, and it also works for 4th Generation thermostats. Note that using a remote sensor this way may require some experimentation to get the desired result, while the feature to manually adjust the maintenance band makes it quicker and simpler.I really like the Google Nest thermostats when they’re working the way they’re supposed to, but the lack of backward functional capability from the 3rd Generation model to 4th Generation model is inexcusable, since there’s no warning about it. And Google support is ineffective in helping less technical buyers. The least Google could do is document the issue properly on their web site.
tylerk –
Replacing a first generation Nest thermostat
Easy to install when replacing previous generation Nest thermostat. Mounting plate is not large enough to cover previous thermostat’s mounting plate. Had to purchase a larger plate specific for this 4th generation Nest Learning thermostat.
Robert Mathews –
THermostat nice but Google Home App not so nice.
Got this thermostat version 4 to replace my old version 1 which was loosing wifi support . New learning thermostat installed easily looks good with big new display . Only problem is Google buying nest and using Google Home app for remote control of the thermostat. Google Home tries to connect to all smart devices you already have and so is more complicated to use. I see no way to only have Google home just connect to the thermostat and delete everythine else. Now google home see the new thermostat and lists all its properties but cannot read or set the temperature. I will update this when I get the google home to work right.Update on Google home — it seems like google home app is not working yet for the learning thermostat 4. After several attempts to install the thermostat after resetting it , and replacing the app , I hit the help link and was surprised when I quickly got a support person on the phone. They informed me that it was a known bug and they were working on it. This is strange considering google has been pushing the learning model 4 on previous owners of version 1 nest. Will I get an email when it is fixed??
Christopher –
Just do it
Super easy to install. Took longer to install trim plate than it did to set it up. Even with a dual fuel heat
Katalin –
4 starts only because not compatible with uk 🇬🇧
MX5FOR2 –
Yikes what a neat device! It does learn from your daily movements to adjust either heating or cooling regime when you leave the house. It compensates for outside temps and figures out the time required to meet your set temps when you return to the home. There are many settings for fan timings ( to circulate stall air). To use the devices many features one should use the Google home app which requires WiFi. Should this be a ‘no -no’ it can be easily programmed directed by using the thermostat. Our one negative comment is the price. A Generation 3 unit costs less but lacks conservation features of this unit. Time will tell if the units features will save us energy costs. Google emphasized it will save.
Jakob Voogd –
The Next Gen 4 Thermostat is a fantastic addition to my smart home setup! It’s incredibly easy to install and use, with a sleek design that looks great on the wall. The intuitive controls and app connectivity make adjusting the temperature effortless, even when I’m away from home. The energy-saving features have already made a noticeable difference on my energy bills. I also love the detailed reports and insights on energy usage. Highly recommend this for anyone looking to upgrade their home’s climate control system!
mahmood –
I bought a Google Nest Thermostat from Amazon, and initially, I wasn’t sure how to install it. I contacted the supplier, Mr. Mumtaz, who was incredibly helpful. He came over and installed it for me and did such a great job that I ended up getting one more thermostat, which he also installed. The devices are now working perfectly, and I’m very satisfied with the performance. Highly recommend both the product and the excellent service!
AJ – The reviewer –
I recently upgraded to the Google Nest Learning Thermostat (4th Gen) with the Nest Temperature Sensor (2nd Gen), and I couldn’t be happier with the purchase. This device not only modernized my home but also noticeably reduced my energy consumption.What I Loved:Adaptive Learning – The thermostat quickly learned my schedule and started adjusting the temperature automatically to fit my lifestyle. I barely have to touch it now!Sleek Design – The circular display looks clean and futuristic. It fits perfectly with my home décor.Remote Sensors – The Nest Temperature Sensor is a game-changer. I placed it in my child’s room, and the thermostat now prioritizes that area, ensuring a comfortable temperature where it matters most.Energy Savings – Within the first month, I noticed a drop in my energy bill. The Eco Mode kicks in when we’re away, and it does a great job of managing heating/cooling efficiently.App Control – Adjusting the temperature from my phone (or even voice control with Google Assistant) is incredibly convenient. I can tweak settings from anywhere, which is especially handy when traveling.Room for Improvement:Price – It’s on the higher end, but considering the energy savings and convenience, I see it as an investment that pays for itself.Installation – While not overly complex, some people might prefer professional installation if they aren’t familiar with HVAC systems.Final Thoughts:If you’re looking to upgrade to a smart thermostat that blends tech, energy efficiency, and comfort, this is it. The combination of learning technology and temperature sensors ensures your home stays cozy in the right places at the right times. Highly recommended!