Google Nest Learning Thermostat (4th Gen, 2024) with Nest Temperature Sensor - Energy Saving Smart Thermostat with Adaptive Eco - Works with Alexa and Google Home App - Polished Obsidian

I had purchased a previous version of the Nest Thermostat (3rd Gen) and had issues with it holding a charge and connecting with Wi-Fi. So I returned the older model and splurged for the latest version in the Gold finish. OMG! I am still blown away at how amazing it looks. The mirror finish is stunning and its very easy to read when the dial turns on.Installation was actually easier than the 3rd Generation model (which was pretty easy) and set up was done in about 10 minutes. It connected to my Wi-Fi immediately and did a quick software update. The remote temperature sensor was added in less than 5 minutes. I travel a LOT for work and having total control of the HVAC system through the Google Home app is easy and I can see both the t-stat and the sensor in the bedroom.You may think that I have been bribed or compensated by Google, but you would be wrong. I simply want everyone to know that this is a very high quality product that looks amazing and WORKS.

Loved the online install guide. This seems daunting but when you follow the online guide and answer their questions, the install is easy. The level lights up when you have power. Then you snap the device onto the install plate. Once you are set up you can add users. Very good for us as we have a cabin. We can turn on the heat while driving up from our phones so it is warm when we get there. We can check the thermostat remotely as we are on propane and guests often leave the heat on. We can adjust it back down. Great upgrade. Also the extra room sensor helps balance the heat.

While troubleshooting a furnace issue, we elected to upgrade the thermostat to eliminate that as an issue. It wasn't but glad we got this newer model over the GEN2. Easy to install and looks really good.

Love it, makes life much easier and works great with the Google Home ecosystem. Easy to install also. Cool to look at great design, very happy

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.

It serves its purpose, it has more settings than I actually need. I may have been better off with a more basic one as I have a smaller home, but I do like that it lets you know if there is an issue turning on the AC or heating. Not sure how I feel about the need for additional sensors or even if that would have any benefits. For me, the cost wasn’t justified because I have a smaller home. But I will keep the item as it’s just a pain to replace and it serves its purpose. I do like the schedule settings, I don’t like the automatic adjustments it makes based on my comfort level. For utility billing reasons I didn’t like the fact it could change the temperature on its own, though I understand this setting can be switched off.