Nest (T3007ES) Learning Thermostat, Easy Temperature Control for Every Room in Your House, Stainless Steel (Third Generation), Works with Alexa

Stopped working after 1 Year!!!!

Comment

May 3, 2018

Style: Stainless SteelVerified Purchase

Bought this 1 year ago and thermostat has been great until just now. It is no longer sending enough voltage to the HVAC and the AC is no longer working. Had to have an HVAC tech come out to see what was wrong and they diagnosed and confirmed the issue is with the Nest (hooked up a different thermostat and it worked fine, also connected wires directly and system worked fine). Not sure if this is the result of a firmware upgrade or not. Trying to get some help from Nest support but have been on hold for several hours and have tried multiple times - they are useless. Amazon support was great though!

28 people found this helpful

DON'T DO IT. JUST. DON'T.

Comment

rgearity

November 1, 2017

Style: Stainless SteelVerified Purchase

Thermostat worked fine for 6 months then I woke up to a cold house and the thermostat displaying a "LOW BATTERY" message. I took the thermostat off the wall and charged it via the USB port and put it back on the wall. It worked - but only for an hour or so and then the low battery message appeared again. I found an article that there is a known issue with a software update causing this - support was not interested and offered nothing in the way of help. Now I have a $ 250 piece of junk hanging on my wall. Since this happened I have found numerous postings online from people with the same problem. DO NOT order this thing, if I could give it zero stars I would have. It is amazing that Nest thinks it can charge $ 250 for a thermostat that dies 6 months later and people aren't going to be upset....

65 people found this helpful

C wire strongly recommended

Comment

May 18, 2017

Style: Stainless SteelVerified Purchase

My home is old and does not have a "C wire." The system consists of AC and Electric Heater, using a 4 wire controller (R=24 VAC, Y=Cool, W=Heat and G=Fan.)
I had the first generation Nest installed and it worked for about 4 years without problems, until it failed, conecting both the AC and heater for a day and a half: I have been heating and cooling my home during day and a half! I installed an ancient mechanical thermostat and things were normal again.

I decided to order the third generation Nest.
In my installation, the 24 VAC transformer delivers an open loop voltage of 28 VAC (R wire) with respect to Y (yellow) or W (white) when the thermostat is disconnected and there is no load. When connecting the 3rd generation Nest base to the wires, the AC voltage between Y and R, used by the Nest electronics, drops to about 12 VAC, impling that the current consumption of the Nest base produces a significant drop of 28 -12 = 16 VAC in the coil of the relay used by the AC activation. With that low voltage the thermostat shows an error message when the additional load of the display is connected. Bottom line, I had to return the Nest 3rd generation.

Some people (even Nest) suggests that the heater wire (W) could be connected to C (common) as a short term solution, during the summer time, or viceversa, connect the cool wire (Y) to C during the winter time, until you have the time to add a c wire. Others suggest using the fan wire G connected to terminal C. Any of these "solutions" imply not using all the features of the thermostat.

My suggestion is to avoid the Nest 3rd generation or any other smart wifi thermostat if your home does not have a c wire installed. Nest should make it clear that a c wire is a requirement.

93 people found this helpful

Great product. Make sure you learn all of the settings.

Comment

Customer images

See all customer images

Most recent customer reviews

Richard

I wanted one of these for a very long time. The installation was quick and easy and the convenience is grand. One note, there is an automatic fan setting.Read more

Published 5 minutes ago

CLARENCE

Works as advertised

Worked as advertised

Published 20 hours ago

Vlad

Stylish and functional

By far easier than programmable thermostats of the previous generation. Learning functions were not that useful for me but remote control and pairing with smoke detectors are...Read more

I'm surprised by all the positive reviews. My experience has been poor. I was given a Nest by my power company for free.Read more

TwoFry

Not good

I have like 6 of these ...

V. Marcano

I have like 6 of these that i brought some time ago @ $250 each. They recently started dying. It seems like i am not the only person with this issue.Read more

Awesome thermostat. Would buy again

Lynda Cohn

Great but

It's so easy to set up, and you can control it from anywhere. The eco-friendly features are nice, and I do see a difference the bills

Amazon Customer

Nest is the best

This is my first “smart” thermostat- works great. After checking and confirming compatibility with my old AC unit, it was an easy installation in few minutes. Intuitive interface.Read more

Nader

Great thermostat

The fan feature will save $

Amazon Customer

Works with Alexa And with my cell phone easy to adjust temperature really enjoying it

I like this product until it’s dead. I own this nest just 1 half month, could you help replace this one?thanks.

momoco

Just used one month