• 1.0 out of 5 stars

    good looking terrible product, made electric bill double~

    • Written by from louisville

    I have tried and tried to get this great looking thing to work, but alas we are putting the old thermostat back on. Frustration, every month with our heating bill out of control, and never able to really regulate the temperature in the house to a comfortable temp. Either freezing or burning up. Randomly turns off after it's turned on for 30 seconds and then comes back on for 5 and then turns off again! Don't waste your hard earned money because it looks so cool! Looks are deceiving.

    4 of 5 people found this useful

  • 1.0 out of 5 stars

    I really wanted to love it

    • Written by from Chesapeake

    I wanted to love it but I love being comfortable in my home more. I purchased 2 second gen Nests for my home and immediately I noticed that the batteries drained, they lost wifi, and then shut down. Several times I came home to a freezing home and had to light the fireplace while I manually charged the Nest with the mini USB. No help from Nest support and finally I had to replace them with the old simple programmable thermostats ($19.99 at Home Depot) - problem solved! Waste of $500.

    Reading the forums and comments lets me know I'm not alone.

    4 of 4 people found this useful

  • 1.0 out of 5 stars

    Check the type of system you have before buying

    • Written by from Toronto

    I am the owner of a 1st generation Nest Thermostat. It worked amazing with my old single stage mid-efficiency furnace. The furnace quit last week and I replaced my furnace with a 95 percent high-efficiency furnace with a dual staged fan. Nest thermostats (1st & 2nd generation are not compatible with furnaces with multiple stage fans - as per Nest Technical Support. I had to revert to using my old programmable thermostat and I am now the owner of a $250 hockey puck.

    5 of 8 people found this useful

  • 1.0 out of 5 stars

    Frozen Pipes

    • Written by from Zhangjiagang

    Before starting this review, let me state my credentials. I am a Physics Ph. D, with over 20 years experience in test and measurement, and I also have an electrical engineering degree, dozens of technical publications on testing and simulation algorithms, in addition to law school and being CTO of a tech company. If I have trouble getting this device to be reliable, I'm going to make the claim the device is not reliable.

    I used a Nest thermostat for about 4 months before it failed, causing the pipes in my home to freeze and rupture. The issue is apparently related to the inability of the battery to remain charged when the weather is cold and the thermostat needs to signal the heat to run for long periods of time. There is no fail safe mechanism built into the thermostat makes the device function in a safety mode when the controller dies from the dead battery. I bought a gen II device with some version 3.5 something of the ROM. It had upgraded to version 4.0.1 without my consent when problems began to happen. I was away traveling one day when I noticed the battery was creeping downwards, and there was absolutely nothing I could do remotely to turn the heat on. It eventually went offline for a few days, and then magically reappeared a week later, running the heat for 48 hours to heat the home to the scheduled temperature. What was interesting to me before the failure was in spite of the fact the battery had enough charge, I still could not get the Nest to turn on the heat. After a day the battery died, and I lost contact. I was fortunate to have turned off the water at the home before leaving, but of course it is always impossible to drain the water meter, and the meter froze and ruptured. When the heat resumed by itself without me being there, the basement became wet. Very scary!

    My opinion is this s a great concept, but rushed execution resulting in a device that is not tested in all possible real world situations. It is not a good thermostat to use in environments where it is either so cold or so hot that failure is not acceptable. If you have winters where the temperature falls in the -20 C or cooler range for extended periods of time, do not use a Nest. Buy something with 120 years of proven reliability, like an electromechanical round Honeywell thermostat. It will save you a lot of headaches and cash. If you want to monitor your home temperature remotely, learn to use an arduino and temperature sensors. It will be safer.

    I think Nest ought to start worrying about a class action. I have heard several similar complaints. They might consider proactively addressing this problem.

    10 of 19 people found this useful

  • 1.0 out of 5 stars

    Heat bill doubled

    • Written by from Charleston

    Swapped an old digital basic thermo for the Nest in Dec of 13. The aesthetic quality of the Nest had me hooked. I had a professional come by afterwards to check it out because the house was taking forever to heat. He said it was installed properly, just a Nest trait. It kicks on the first stage of heat and runs as much as it can with out utilizing the 2nd stage which really heats the house up quickly. My 1st stage of heat was running constantly. Well, it's been 3 months and average temps were with in a degree of the same time last year and my electric bills have doubled each month compared to last year.
    I requested support from Nest 2 months ago and have received no replies. My Nest is going back for an exchange to something more affordable that works.

    4 of 5 people found this useful

  • 1.0 out of 5 stars

    Not as good

    • Written by from Dearborn Heights

    I purchased Nest, after couple month of on and off working out the way it works, it was working fine, until and in a cold night of January, the house was very cold, come to find out that the thermostat is completely dead and without any warning, lucky enough I have kept my old thermostat, I changed the thermostat back to the old one. after checking the Nest thermostat, the battery was completely drained, and needed to be charged.
    if it works like it should, its a good thermostat, but when the problem is in the source of this thermostat, lots of glitches needed to be workout.
    I don't advice anyone to purchase this thermostat, and if you do, keep your old one handy because you going to need it.

    4 of 6 people found this useful

  • 1.0 out of 5 stars

    breaks easily

    • Written by from miami

    bought the nest at Christmas in three months it broke

    the technician nest recommended me to use in my area told me he's seen a lot of them break

    do not buy this product
    wish apple did not carry it because I thought apple would have not carried it if it was not reliable
    now I have my old thermostat and everything works well now

    try Honeywell

    if anyone from nest reads this build a more reliable product before releasing

    6 of 7 people found this useful

  • 1.0 out of 5 stars

    Wish It Was 5 Stars But It's Only 1 Star

    • Written by from Greely

    I was so excited to order this product when the gen 2 first came out - the concept is great and the user interface is wonderful. Unfortunately the build quality Is so poor that everything else doesn't matter.
    When my heating / cooling contractor installed it for me (I have a ground source heat pump so Nest recommended a pro install) a year and a half ago - it was his first experience with it and he was impressed but not as quick to convert as I had been.
    Just to be sure everything was good - my contractor talked to the Nest support group when first connecting and everything went well.
    Suddenly 6 months later in the middle of the winter - the thermostat started sending a cooling request at the same time as a heating request to my heat pump which left me with only air conditioning on a very cold day. Even after changing the mode to heating only it continued to send cooling requests.
    My contractor came out and after conferring with Nest support for about an hour, they finally agreed it was a defect and arranged to send me a new one.
    In the meantime my contractor disconnected the cooling wires at the heat pump so that the thermostat couldn't try to cool the house (it was -10C outside).
    When the new one arrived a week later - I hooked it up, had my contractor come back to reconnect the cooling at the furnace and we were OK again.
    I thought this was a fluke and went back to singing the praises of the Nest Thermostat to my friends.
    Now it's the middle of the winter again and suddenly my furnace is making a terrible sound and my house is freezing.
    Contractor is back and the replacement thermostat has begun sending simultaneous heating and cooling request (actually only a 15v cooling request but a 24v heating request).
    This time the defective (again) thermostat damages my reversing valve.
    With all the visits and now repair charges - my contractor has cost 3 - 4 times the value of the thermostat and he has now had enough experience with them to tell me this is not a fluke. The electrical circuits are cheap and these problems are cropping up fairly regularly.
    Enough!
    There are other alternatives now and I can't afford the cost or headache of sticking with this Nest thermostat.

    7 of 8 people found this useful

  • 1.0 out of 5 stars

    Disaster, waste of money and time with totally useless tech support

    • Written by from Chicago

    We bought one and got it to work to run the heating, but couldnt connect to internet. Then as suggested by Nest, we reset, restarted the device and since then it didnt detect the heating. After wasting 2 hours on the phone with tech support, they couldnt solve the problem. We said FINE, we sent the wiring and the picture to Nest compatibility email to get their advice. After a few days we got an email saying it wouldnt work cause we have high voltage which is absolutely wrong. Not sure how to trust such tech support who cannot even diagnose high voltage from low voltage, let alone to help with the rest. I strongly not recommend this product as it is over priced and not working. it just looks fancy and the idea of how it supposed to work is enticing, the reality is it's not working. period!!!

    8 of 10 people found this useful

  • 1.0 out of 5 stars

    Stopped working in the middle of a cold night!

    • Written by from Pitman

    Suddenly stopped working in the middle of the night! Woke up to a freezing downstairs and no response from the thermostat. Looks like my 7 month old baby will be sleeping in the cold again tonight. Total rip off!

    7 of 10 people found this useful

  • 1.0 out of 5 stars

    NEST LEARNING THERMOSTAT DOES NOT WORK!

    • Written by from BABYLON

    I am an architect and we were pretty excited by using this thermostat in several of our projects. One third of them couldn't even connect to the equipment they were suppossed to regulate even though they were compatible as per Nest's list of compatibility. And the other third would work OK for one week and then die.
    We tried working something out with Nest.com directly but they do not have real Customer Service. If you call, they'll have you waiting for one hour and then the call will magically fall and they will never follow up nor answer your emails. DO NOT BUY THIS PRODUCT. IT'S A NICE CONCEPT, BUT IT DOESNT WORK YET!!! SO FRUSTRATED BY THE LACK OF RESPONSE OF THIS COMPANY. NEVER AGAIN!

    9 of 12 people found this useful

  • 1.0 out of 5 stars

    Does not work with Carrier

    • Written by from Reston

    I purchased a Nest for my wife for Christmas. Before opening the box, I watched the nest online installation video and went to the nest compatibility website. The website instructed me to take a photo of my existing wiring and send it to nest customer support. I called nest and spoke to a tech after a very short wait. He advised me that my nest "may not be compatible" but had me continue to investigate. After an 18 minute call, he determined that i should go ahead and instal my nest. After installation, my nest said a wire was not installed correctly. I went through troubleshooting and called the support telephone line again. This time they said "because of the proprietary wiring (in the photo i had previously sent) your nest is not compatible." I then went to google and immediately found an article on nest.com that explains Carrier Infinity systems are not compatible. I don't know why the box doesn't say "not compatible with Carrier Infinity Systems" and I don't know why the first phone technician didn't say "not compatible with carrier infinity system."

    9 of 13 people found this useful

  • 1.0 out of 5 stars

    Don't buy a Nest Thermostat - Low Battery = no wifi

    • Written by from San Francisco

    The Nest Thermostat simply does not work. I have owned and returned 5 Nest thermostats. They look great until low battery notification appears and then no wifi connection. So really no Nest remote functionality. It may look better but internally it is a poor design and doesn't work. I replaced 2 Nest Thermostats, and in less than a month both had low battery problems. Just to be clear, you can not access or change the battery on the Nest thermostat. I am going to try the Honeywell. Have a good day.

    8 of 10 people found this useful

  • 1.0 out of 5 stars

    Was good until version 4.0 software ... now leaves house without heat

    • Written by from Madison

    Loved my Nest thermostats so much I bought 5 more for friends/family. Since the software updated to 4.00 in mid Dec (who releases a major software update during the coldest winter in decades), the Nests have been failing with dead batteries, including those with c-wire connections (full voltage so battery isn't required). Apparently 4.01 isn't helping any and Nest isn't globally releasing it, you have to beg and plead to get it.

    Avoid these until Nest figures out their software issues ... I've taken the Nest Protect alarms off my want-list.

    8 of 10 people found this useful

  • 1.0 out of 5 stars

    Total POS

    • Written by from Alton

    These things are horrible. I have spent hundreds of dollars on HVAC repairs that always end up being the mystery "low battery" phenomenon. I am about to remove all 6 units and replace with Honeywell stats. Oh, they are very pretty but that is all they are.

    13 of 15 people found this useful

  • 1.0 out of 5 stars

    Too much trouble - energy cost increased.

    • Written by from Loveland

    First off, I'm very tech savvy, over 20 years in electronics design and software engineering, so I'm capable of following basic installation instructions. I was quite interested in the Nest thermostat. My house is heated and cooled by a newer heat pump. I dutifully took a digital photo of the connections to my old thermostat and sent them to Nest. When i called, I was assured that the 2nd generation thermostat would work fine with my system. Nest even sent me an email with wiring instructions. This would be a snap, I thought.

    All seemed fine at first. Then, during a twice-yearly HVAC service, the tech asked me why I had the emergency heat on all the time the unit was running. I was puzzled. He showed me that it was indeed running on emergency heat. After a couple of calls to Nest tech support, I gave up, reinstalled the original thermostat, and returned the Nest for a refund. Then - insult to injury - I received an electric bill that was nearly 3x normal - emergency heat is expensive! I could have bought 2 more Nests with the additional energy cost. By the way I checked, double checked, and confirmed with Nest support that everything was wired and configured correctly.

    Not a happy outcome.

    12 of 13 people found this useful

  • 1.0 out of 5 stars

    FAIL

    • Written by from Oakville

    Don't be fooled by the shiny, sleek look. This this is an epic fail that can cost you hundreds of thousands of dollars if you live in a cold climate. This is an expensive consumer electronic device and NOT an HVAC device. The customer support is non existent apple-like "geniuses" who are totally untrained for the problems this thing generates
    I had constant stop WiFi connectivity issues and several losses of power to the furnace and AC and low battery warnings.
    I lost count of how many times I came home to a boiling or freezing house
    One day, It failed on a nasty cold snap and my water pipes froze, my basement flooded with cold frozen water and destroyed my finished basement and everything in it.
    The HVAC guy said it was the nest. He refuses to sell them because of the constant problems that can easily become catastrophic.
    Don't be an idiot like me. READ THE REVIEWS and stay away!!

    Buy a cheap honeywell or something that is designed as a real thermostat. The aren't shiny, but they work. This POS does NOT!

    20 of 21 people found this useful

  • 1.0 out of 5 stars

    Nice Idea but Bad Product

    • Written by from Hopkinton

    Same as the previous review I woke up one morning during the recent cold snap to the downstairs (where the Nest T-stat was located) being in the 40's and found that the Nest thermostat had stopped communicating with my furnace. To be clear both other zones in my house were working so it was clearly a problem with the Nest. After disconnecting it and rechecking the wiring (which was fine) the unit was reinstalled and it worked again. Two nights later the same thing happened again. After a quick internet search I found that this a problem with the Nest on some types of HVAC systems. Once I installed the old (non-Nest) thermostat everything worked as it should. Do yourself a favor and stay away from this product.

    15 of 16 people found this useful

  • 1.0 out of 5 stars

    Nest is Junk

    • Written by from Minnetonka

    Woke up one morning freezing and found that the Nest "learning" thermostat had stopped communicating with my furnace. Tried to turn the heat up and received a low battery message. Called support and they assured me that after charging the thing with a phone charger that it would work again. Temps went to -15 in MN and I woke to a temp of 49 degrees inside my house. Called customer service again and spent over an hour trying to correct issue until they decided it was time to send me a warranty replacement. It took over 3 days for this to arrive and the customer service rep told me that I should go to the hardware store and purchase a traditional thermostat if I hadn't saved my old one to keep my pipes from freezing in my home! Warranty replacement still does not work, I've spent way more on electric bills to run space heaters while the furnace was out, missed a day of work to install emergency thermostat so my pipes wouldn't freeze, I have an 11 year old son who couldn't sleep on a school night because it was bitterly cold in our house, spent hours on the phone with nest "technicians" . Do yourself a favor and buy a normal thermostat, I wish I would have.

    16 of 21 people found this useful

  • 1.0 out of 5 stars

    Does not work in cold weather

    • Written by from Hanover

    I have had HVAC technician talk twice with NEST to get it to operate correctly. In single digit weather the system would only blow cold air. Change system back to Honeywell thermostat and house is warm. Also, does not work with changeable fan speed system. I gave it a year to learn but to no avail.

    13 of 15 people found this useful