• 1.0 out of 5 stars

    Don't bother with this product

    • Written by from Dallas

    The good things - nice design, looks cool, easy to use, common sense user interface.

    Now for the bad things. It does not work! Nest has replaced my thermostat one time. The issues are with its ability to be a smart thermostat. It is not. The away function does not work. While Nest will tell you the software only kicks in during the daytime hours, it decides if you are away at all hours of the day or night. For example, at 6PM, it decides that I am away even though it turned on when I came home. It will also go into away mode every hour or so during the evening. So, if you change the temp at 8PM, by 8:30 it will reset to the temp for away mode. And, every morning when you wake it is in away mode.

    To solve that, I decided to use the "schedule" mode. That does not work either. If you only set a single temp and never touch it again, it works fine. If, however, you ever push the temp up or down slightly, it remembers that and constantly resets itself to the new temp. I can't recall the number of times it resets to 65 in the AM, or resets at other times on its own. It takes several times of over riding the temp to get it to reschedule the right temp.

    Quite simply, this smart thermostat is stupid. I would avoid all their products. While the shifting temp is an inconvenience, I would not trust their smoke or CO detectors.

    1 of 1 people found this useful

  • 1.0 out of 5 stars


    • Written by from East Greenwich

    The Nest thermostat looks sleek. Unfortunately it doesn't do what it should. After about 8 calls to Nest (always very pleasant advisers), my thermostat still goes "Offline" without explanation. This means that I cannot control the temperature remotely, which is the whole point of the thing. Save your money and by a much cheaper one at Home Depot.

    1 of 1 people found this useful

  • 2.0 out of 5 stars

    Once a avid backer of Nest. Might be again, if.....

    • Written by from Ramsey

    Had a GEN1 Nest. It did not want to switch to heat in the winter. No problem. Gave it to a friend who loves it. Purchased a GEN2. Wonderful. Does everything I want until now. Not heating properly because ambient temperature states 75 degrees F. Removed Nest module and felt back plate. Warm. Looks like Y1 FET blown. When I removed Y1 wire, FET cooled down. It is less the 20 degrees F here in Minnesota. So my thermostat was running the heat and also trying to activate the A/C. Fortunately at the end of the cooling season, I had removed power from the A/C.
    Now as a test engineer with almost 30 years of experience and also with an engineering physics background I know my way around circuits.
    Nest has a very serious issue with how they dealt with the 24VAC input power. Their circuit is not fault tolerant for the fact that the 24VAC is unregulated and can vary quite a bit depending on input voltage and load conditions. The 24VAC technology was designed when the world was analog and the voltage was used to switch mechanical relays. Nest needs a solution that protects their wonderful implementation. Isolation, solid state relays, an actual power control/condition/switcher. Pick one. Looks like a group of digital engineers approaching problem from digital side with little experience with analog and HVAC. Their competitor is approaching the market from the HVAC side with not as much talent in the digital side.
    Will invest in Nest when they get their power supply situation worked out. This is not a compatibility issue as 24VAC transformers exist on most furnaces. If you do not think you have power spikes, the only way to be certain is to have some type of power conditioning and/or surge protection at the 110V input to the furnace.

    9 of 9 people found this useful

  • 1.0 out of 5 stars

    Awful for Vacation Home

    • Written by from Philadelphia

    Though this thermostat is very cool looking, and the learning feature interesting, it lacks two basic feature that make it terrible for a vacation home.
    First, it does not have a low temperature alert that emails you when the temperature drops below a certain level. This would give you a chance to try to get ahead of freezing pipes.
    Second there is no temperature hold feature. Sometimes I want to just set a temperature and leave it there... The most basic of functions.
    People have been complaining about these issues for the past couple of years on the Nest boards and the complaints are falling on deaf ears.
    Going to try to sell my 2 nests and get Honeywells.

    6 of 7 people found this useful

  • 1.0 out of 5 stars

    Nest is UNRELIABLE

    • Written by from Hauppauge

    STAY AWAY from this product if you intend to use in a weekend house, or any home that isn't occupied everyday. IT is unreliable. The battery keeps going dead. The patches they've sent to fix are worthless. do NOT buy this product. It is TOO unreliable.

    9 of 13 people found this useful

  • 1.0 out of 5 stars

    You have been warned

    • Written by from Newton

    Went through multiple emails making sure NEST was compatible with my heating system. Had the NEST professionally installed. On the 2nd day it just started blowing cold air. It is 40 degrees outside now and 42 degrees inside and I have to have the old system installed back on. Horrible gimmicky gadget here.

    9 of 13 people found this useful

  • 5.0 out of 5 stars

    Very Happy; Meets my expectation.

    • Written by from Markham

    I've been using the Nest for about 6 months now and I am very happy with it. I was hesitant at first hearing all the horror stories with the Nest messing with their furnace's motherboard and what not but I can say I have not had that issue at all. I've already used it during the cold and warm months and everything has worked perfectly.

    For those wondering, I am NOT using the Common wire in my set up.

    I think the most handy feature about this is that I can set my temperature from anywhere with my phone. I also like to see what the humidity level is on my home since I have hardwood floors.

    What I don't like (right now) is the Nest tries to be too clever. It uses it's motion detector to determine whether it should keep the heat on or off and it'll try to build you a schedule based on your usage pattern. While this sounds good in theory it doesn't work if your thermostat is in a low traffic area of the house. Also, once it builds you a schedule, you really have no idea it did until you notice your temperature setting keeps fluctuating, or in my case, the wife complains why the temperature was X and now it's Y. Hopefully, it's "smartness" will get more advance as it integrates with other devices in your home, i.e. Dropcam.

    8 of 11 people found this useful

  • 5.0 out of 5 stars

    Not sure why all the bad reviews, so far this thing is amazing and works!

    • Written by from Dedham

    I researched this and other smart thermostats for about a year and read review after review after review. Like you reading this now I was hesitant and heard the horror stories of pipes freezing and this thing being buggy. However I decided after all the mixed reviews to take the plunge. I live in a single family home in New England with one thermostat for the entire home and this took exactly 10 minutes to install. It fit nicely into the area that held my older digital thermostat and I added the base plate and connect the two wires and presto this thing was up and running. Now so far it is October and the weather is not freezing cold yet and this thing is trying to learn my habits etc, however I set up a schedule anyway but not sure I will need it. The ease of use for this device was unreal and I can see why so many people like it. It even looks awesome on the wall and I processed a $100 credit from the electric company as a rebate which helped to offset the cost.

    What I do like so far is the iPhone app and the website which make this so easy to use and set up anyone could do it. Even the most complicated systems seem like they would be a snap. I will keep a watch on this as the weather gets colder to see how it works and hopefully I have no issues. I would recommend this at this point to anyone since digital thermostats are a thing of the past and I cannot see Honeywell catching up to this anytime soon. Take the plunge, go buy one! I may get the Nest protect but so far that looks full of bugs.

    2 of 4 people found this useful

  • 1.0 out of 5 stars

    Nest, Not what us used to be...

    • Written by from Oakdale

    I purchased my Nest 1st generation 5 years ago, and it 'was' a phenomenal piece of equipment. It managed my heat pump, heating and cooling requirements better than my old mercury driven thermostat... The Nest DID save me money on my electric bill. However, Nest must have recently had an update to their device which I'm finding 'I cannot manage my FAN air function.' During the daylight hours when my system is demanding AC, Nest operates as it should by providing AC. In the evenings when it's too cool for AC and still too warm for HEAT, my FAN does not turn off... It constantly runs even after I manually command Nest to 'OFF.' I find I need to manually turn the AC, HEAT PUMP unit to OFF to force the fan yo stop operating. Hence, I'm no longer saving money on electric/heating bill. Note: For some strange reason, this issue is only a problem during the evening hours. I'm considering removing my Nest and replacing it with one b their competitors.

    7 of 11 people found this useful

  • 1.0 out of 5 stars

    AVOID NEST; Coolest look; Inferior functionality

    • Written by from Beverly Hills

    This is a very cool looking, poorly designed thermostat.

    If you are looking for a thermo that is easy to use this is NOT it.

    1. There is no on-off switch; that's basic. I want to turn the effing system off. There is no simple, obvious way to do that. I want to turn the effing fan off. There is no simple, obvious way to do that.
    2. No tech support, except FAQs and the "community." Clearly cheap for apple. Clearly inadequate for a consumer.
    3. Navigating the system is cumbersome, limited, sequential screens.

    Do yourself a favor: Get a Honeywell or some other brand that does not look so cool but that has a good display and can be easily used.

    11 of 18 people found this useful

  • 5.0 out of 5 stars

    Just Installed....but loving it!

    • Written by from Medford

    I'll come back after we've had enough time to really see what's under the hood....but so far it is working wonderfully!

    0 of 3 people found this useful

  • 2.0 out of 5 stars

    Artistic physical Design but has technical issues

    • Written by from Anaheim

    The Nest learning thermostat is very attractive when installed on your wall. It is easy to install and the instructions are very clear and quite simple.to follow. I took me about 20 minutes to complete the installation and have my system running. As advertised it will learn your schedule automatically or you can program it manually. You can adjust it remotely using your iPhone app or from any pc or apple computer after you download the software from Nest.
    The bad news is that even though it is advertised as a thermostat which is supposed to control the temperature, it is absolutely terrible at doing this. For example in the COOL mode I set the temperature to 76 degrees. The room temperature has to rise until almost 78 before the thermostat switches on the cooling equipment and then fall to almost 74 degrees to turn it off. This huge 4 degree "dead band" does not provide a comfortable living space since you go from warm to "freezing" rather than a comfortable 0.5 degree differential. This also increases energy usage. Contacting Nest only confirmed that this is the way the thermostat was designed to operate. Very poor answer and I have since replaced Nest with another manufacturer's model which operates to my liking, I do not recommend this product.

    13 of 14 people found this useful

  • 5.0 out of 5 stars

    Great Device

    • Written by from Coral Springs

    Does what it says it will do. Love the look and love controlling the AC by iPhone anywhere.

    2 of 8 people found this useful

  • 1.0 out of 5 stars

    Spotty product

    • Written by from Kennesaw

    This thing never works, to top that off, tech support never gets back to you.

    What a waste of $250, I will never recommend this product, cool features are worthless if products does not function.

    12 of 19 people found this useful

  • 5.0 out of 5 stars

    Awesome job Nest

    • Written by from GLENNVILLE

    The Nest has already save me a ton of money. It's design is clean and vary attractive on the wall.

    3 of 7 people found this useful

  • 5.0 out of 5 stars

    Very pleased

    • Written by from Live Oak

    Before buying, I used Nest's website to confirm if my thermostat hookups were compatible. An easy, but incredibly important step.
    The installation was simple, but I took my time since I wanted everything to be perfect.

    A negative surprise: It may've been my router (Motorola Surfboard SBG6580), but I found I had to Broadcast my SSID (router name). Most people have this broadcasting all the time, but I prefer to not do so. Nest would not connect for me unless I set the router to the default (allow broadcasting).

    Note: I didn't call Nest to confirm, but I could've.

    Once that change was made, everything connected and setup was smooth as silk. The UI is incredible in my opinion, and I also took the time to learn more about my house (had just bought this house) when I received prompts that I was unfamiliar with (like whether I had 2-stage heating). Nest's site helped with this also, but I still had to do some research on my own, which was not a problem.

    Since then, our AC is running much less often and somehow the house is incredibly more cool. For the first time in my life, I am comfortable with 80°… I usually kept it at 75° in this house with the old Thermostat and in previous houses. I honestly don't understand what all Nest does differently, but I am surprisingly more comfortable at these higher temps now… with is a great feeling when the weather outside is usually 100° or above this time of year.

    So even though I still do wish Nest could find my wifi without the Broadcasting option turned on, the benefit FAR outweighs the single edge-case drawback that I mentioned.

    Also, I want you to hear this: I ALMOST didn't order the Nest due to the negative feedback some posters were leaving here on this site. I eventually ran across another review that more or less discredited a huge number of 1-star posts by explaining the reason for their complaints (he was an HVAC tech, he explained, and his post was technical and well written - boiled down to these 1-star raters not having compatible systems, which would've been detected simply by following the guide on Nest's site). So I went for it and am so very glad I did.

    10 of 16 people found this useful

  • 5.0 out of 5 stars

    Great Product with iOS

    • Written by from Austin

    Works perfect with the iPhone, iPad or any iOS. I like that you can control the device while you are away. It has more features then I care to use but play around with it, you can definitely save money.

    4 of 7 people found this useful

  • 5.0 out of 5 stars


    • Written by from Annapolis

    This is a huge improvement over all traditional or programmable thermostats. The ability to remotely access and command it is reason enough to own one or more, if you have multiple zones, as you can command or manage them from a single location, even after you've gone to bed. It's ability to sense when you have left the premises means you'll never again heat or cool an empty house because you forgot to set it before leaving. You'll get useful reports of your most recent 10 days of energy use, and will wish it was at least a full month to compare with your utility bill. It's relatively simple to install and set up initially, but has enough depth of options to satisfy your "control freak" tendencies. When auxiliary heat is needed, it isn't smart enough to keep the heat pump running continuously, but is otherwise pretty with it. Since it is online and can be continuously updated with new software, it should get even better with time.

    5 of 9 people found this useful

  • 1.0 out of 5 stars

    Great product, but don't upgrade yet, especially if you live in the South

    • Written by from SLIDELL

    Have had my nest almost a year. Installed it the end of last summer. Love all its features except 2:

    The first is the way it plugs into the wall. It is very easy for family members to knock it off the wall while trying to set it. It is better set from your iPhone. This would not be an issue if people were not playing with it so much do to the main issue in the next paragraph.

    The main issue with the Nest is the lack of ability to control humidity settings. My old thermostat allowed this. I have discovered that living in the South, this is a very important feature for comfort.

    When the nest turns on to cool the house, the humid cold air is annoyingly uncomfortable. Turning up the ambient room temperature to correct this results in a room that feels to warm after the AC stops blowing. So either you feel a little too cool when the AC is blowing, or a little too warm when it's not. This is not extreme, but just enough to be annoying if you spend time in your house. I don't notice it when I return form work and go to bed, but I do notice it on weekends and days off when I spend time in the house this summer.

    I am well past the learning curve for a new device, and have not solved this, but I do see where the Nest measures the humidity. So it should be possible for the company to allow us to control it.

    Since a basic wired thermostat has a humidity control feature, I am surprised that Nest does not. If I was not so lazy, I would re install my old thermostat. If Nest solves this problem, I will upgrade.

    12 of 22 people found this useful

  • 1.0 out of 5 stars

    Not worth the money

    • Written by from Sandy Springs

    First - Nest lacks the most basic of thermostat functions: Hold Temp. Enthusiasts will tell you the Nest features eliminate the need for it, but Friday was a holiday and there was no way to tell the thing not to run the usual weekday program.

    Second - Auto Schedule makes random unexpected changes. The ability to confirm those changes would be great. My thermostat decided that I didn't want the temp to drop to 70 degrees at 10 PM anymore and cleared that part of the program even though if I made that adjustment, I only did it once. So Auto Schedule is off.

    Third - Auto Away overrides the schedule. So rather than having a comfortable temp in the house when I get home from work, like the program is set for, the thermostat goes to Away when I am at work and I have to interact with it to get it to run the program. What is the point of a schedule if the thermostat doesn't follow it? So Auto Away is off.

    The novelty features of Nest don't really work. I'm pretty sure that the thermostat is not smarter than I am, but it thinks it is and does things it thinks I want. I shouldn't have to interact with my thermostat regularly to get it to do what I want it to, but that is what the Nest requires.

    There are less expensive wifi connected thermostats that do what the Nest does. They don't have the fancy metal ring around them, but that is about all you are getting for the extra money. I wouldn't buy another one.

    16 of 20 people found this useful