• 2.0 out of 5 stars

    It's a Struggle!

    • Written by from Lawrence

    Be warned, if you don't work a 9-5 job, with a set schedule and regimented weekends you will CONSTANTLY BE FIGHTING with nest to keep your house comfortable.

    Nest is constantly changing your schedule to adapt to how you've set it i the past. An extra day off in the middle of the week (like a sick day) and you'll find yourself shouting at the wall every 20 minutes because nest keeps raising the temp back up to 78! The worst thing about this $250 thermostat is that it lacks the basic function of a 'hold' feature.

    Of course you can turn the learning part off but it is not easy to do this and once you do, well, you realize you've paid 6 times more for a thermostat because it has a feature that you've had to disable.

    We've woken up sweating in the middle of the night and found that Nest had decided to turn itself up 5 degrees.

    On the plus side it looks cool and was easy to install.

    On the downside in practice it is annoying and lacks features like a hold button that is essential for anyone who's schedule is not EXACTLY the same every day.

    102 of 113 people found this useful

  • 2.0 out of 5 stars

    Nest Issues--New Paperweight

    • Written by from Phoenix

    I bought my Nest approximately 8 months ago. It worked perfectly until 2 nights ago. It then started turning on the heat and cooling at the same time. My a/c-heat technician says the baseplate shorted out and now won't work. Crazy money for such an imperfect and short-lived product. I gave it 2 stars solely because I like the visual design so much--otherwise, it is a waste of dough.

    18 of 20 people found this useful

  • 2.0 out of 5 stars

    Poorly Engineered Product

    • Written by from Mississauga

    As previous posters found out with hefty install bills from HVAC techs, being electronic / electrical literate I decided to do the install myself. If you are not colour blind and can meter voltage at wiring it should be a no brainer to troubleshoot or transfer wires off an existing thermostat right? Wrong. These things indeed have baseplate resistance or bad terminals on them, the firmware is not up to recognizing that either - I went through 3 and about 8hrs of troubleshooting, ended up running completely new thermostat wiring from the furnace controller just to rule out any resistance off the old wiring. In the end I think that did the trick, these things require clean 24V at RC / Y1 / Common or forget about it. And of course each time I put the old thermo back in on the old wiring, it worked! But I could never get the thing out of these E30 errors, either no power to Rc or Y1. Who knows, 3rd product was the charm I guess and new wiring (18 gauge). My local Home Depot gets more back than they say stay out. However, thumbs up to the software, they got that down right. I should also say I put in 2 Nest Protect C02 units, both function perfectly.

    19 of 23 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.

    15 of 16 people found this useful

  • 2.0 out of 5 stars

    Great idea but flawed implementation - Heat Pump owners be warned

    • Written by from Beaconsfield

    Great aesthetics and very easy to use both manually and remotely. In fact every part of the system except one delivers on the promises it makes. The problem is that system simply cannot handle a duel stage heating system that uses a Heat Pump as a primary means of heating backup up by an auxiliary system such as a furnace. Despite changing several of the options and pre-sets the fact is your Auxiliary heat will be on far more than ever before costing more not less money to heat your house. The support boards are full of people trying to solve the issue, including re-wiring and fooling the system into thinking it’s in a different part of the country (it sets some conditions depending on where in the country it is and what the weather is like).
    The answer I received from Nest was to disconnect certain wires during certain weather conditions….plain stupid.
    The biggest worry is that to date I can see no recognition from Nest that this is an issue at all. Technology always needs debugging but every day that goes by with this product is going to cost you more and more money in heating bills if you have a Heat pump and auxiliary system….be warned.

    11 of 11 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.

    10 of 10 people found this useful

  • 2.0 out of 5 stars

    Really wanted these to work

    • Written by from Tipton

    For what it's worth, I'm a software engineer actively working in the "connected devices" world. Point being, I SHOULD have above average technical know-how.

    Summary of installation for TWO thermostats:
    Wiring 20 minutes total - easy
    WiFi config - 40 minutes (really painful - no exaggeration) AND I had to change my router security to mixed mode before it work. I have a 3 year old Cisco router. I've had no problems with any other device in my house and I have probably 12+ "things" connected all of the time.

    Next morning
    - Error displayed on the Nest and my upstairs was at 61 degrees.
    - Nest support ran through some tests and determined my furnace had an issue and I should call my HVAC guy.
    - Just google "N26 No power to G wire detected."
    - This furnace is a heat pump and apparently didn't provide enough power to keep the Nest happy. I replaced my old thermostat and everything was just fine.

    During the next week
    - My Gas force air furnace worked great and the info coming off of the Nest was exactly what I had wanted/expected. ...until it stopped connecting to my WiFi. It was only online for about 5 days total.
    - After a couple of additional attempts I gave up.

    Bottom line: WiFi connectivity is key for this product and both units had general connectivity problems in my house where other devices seem not to. Before installing on a heat bump, do some additional research. You might be better off with a non-programmable anyway.

    12 of 14 people found this useful

  • 2.0 out of 5 stars

    Great idea but....

    • Written by from MILLINGTON

    Bought the 2nd gen Nest. Returned it because it didn't work with Honeywell air cleaner or humidifier.

    When they upgrade again (3rdgen) hopefully these shortcoming will be corrected.

    Forced air gas heat/AC

    15 of 20 people found this useful

  • 2.0 out of 5 stars

    Give it a try, so long as you can return it.

    • Written by from West Hollywood

    I read a bunch of reviews online here and other websites. People love it or hate it. Mostly because it works for some and not for others. I bought Nest a couple of days ago. The batteries continually die, causing the Nest to shut down and resulting in me having no control over my AC or heat. So for me, it didn't work. When it's on, it looks great. The concept is fantastic and I have friends who have Nest and they have been problem free, which is why I decided to give it a shot.

    It seems the best option is to buy it from Apple or from somewhere you can return it, should it not work for you. Also, only if you can install it yourself. It took me about 20 minutes. So when it didn't work, I spent another 20 minutes disconnecting it. All I lost was the time for the install and removal and two trips to the Apple Store.


    My Nest is completely compatible with my system and when it was on and had power it controlled AC and heat just fine. I do have an RC wire, which is supposed to provide power, but that must not be the case, hence the frequent shutdowns for loss of power.

    I hope this helps clear up the confusion for some people on why there are 5 star reviews and 1 star reviews for the same product.

    9 of 9 people found this useful

  • 2.0 out of 5 stars

    Thermostat Disconnected

    • Written by from Eureka

    I purchased a house with 2 Nests. Seemed like a great concept, however the unit's constently disconnect from the App. I'm told it's because they lose power and connectivity is the first function that shuts down. What good is a thermostat that you can control remotely that is only connected 15% of the tiime. Not to mention if you change your schedule for the slightest reason the whole concept of a learning thermostat is in the toilet!. If you work from home Iyou'll need to keep telling the unit that "I'm working in the office, stop setting the system to away!!" The only benefit I have gotten is the abitlity to set the system to away when I'm out of town. That is, if it's connected. Check back enough times and I might catch it connected.

    12 of 15 people found this useful

  • 2.0 out of 5 stars

    Has Potential. Needs A lot of Work

    • Written by from Baton Rouge

    I did my research and decided I would try the Nest. I previously used an Ecobee in my last home and loved it, the idea of the Nest using software and algorithms to "Learn" and automatically set to away to save energy seemed amazing. I do not however have a set schedule and after 2 months it is still in learning mode. My girlfriend and I both have the Nest apps on our iPhone, Perhaps if it were to use location to know when we left the house, and when we are going to return... it could help but to my knowledge does not. There have been times when I am in another room and it sets to "auto away" increasing the temperature and making it very uncomfortable. Other times in the middle of the night I will wake up sweating, realizing the Nest decided to raise the temperature 5+ degrees. Aside from that... installation was extremely easy, it looks very nice on my wall, and needs a lot of work from the Nest team.

    8 of 8 people found this useful

  • 2.0 out of 5 stars

    It‘s not compatible with baseboard heaters

    • Written by from Montreal

    If you have a baseboard heater forget about nest! We couldn't get any technician to install it here in Canada, nobody wanted to do it and they said that we need to convert our system to 24 volts because Nest is designed for 24 volt systems (furnaces type setups).

    14 of 23 people found this useful

  • 2.0 out of 5 stars

    Overpriced gimmick

    • Written by from Duluth

    A great gift idea for a young person with a lot of extra time, living alone away from their parents for the first time in a very small living space. I have existing temperature preferences and multiple people living in my home - the concept of a thermostat so-smart that it actually learns your preferences was very exciting, but in practice, teaching your thermostat to understand what you want is a chore.

    The design execution is magnificent, down to the auto wiring diagrams and installation plate. However I found that my brilliant Nest thermostat became a dumb thermostat in just a few days of use. I’ve now taken it off the wall and replaced it with a radio thermostat that I can remotely set the temperature at half the price. Blends into my wall better to boot

    31 of 104 people found this useful