I’m having same issues. Nest shown 76, and 3 separate thermometers show 60. Nest shuts off at night and never turns on till morning. All learning modes are off, it’s running as a dumb thermostat now set to 72 but fails over night, every night and temp keeps showing off temps.
Exact same issue here, I have 4 nest thermostats in one house, one in another. All 5 thermostats not reading properly. I'm loosing favor of this Nest Thermostat, perhaps time to move to another brand focused on problem solving.
Not yet. But fyi, to make matters worse, my E Thermostat was recently flagged and partially disabled by Google remotely, unbeknownst to me, code error citing the use of 3rd party power supply to provide the required 24v common connection in my 2 wire multi zone setup. Aside from room temperature reading being off, it was working perfectly for months as I could just compensate by the 10 or so degrees, just sacrificing leafs earned… whatever. Now it’s pretty much restricted to simple analog operations only, no network, no scheduling programmability, pretty much equivalent to my old mercury, with an LCD screen… even after master reset, just laughable. I am naively following their instruction, ordering their $25 common adapter, will attempt to resurrect it… and will post another update on how it all goes.
Same issue as everyone here. When the furnace is running, it's usually fairly accurate after 20-30 minutes. But when I leave the house, it's close to 20F off. 20 degrees!!! That's outrageously bad. The first day it was installed, I rushed home because it was set to 56 while I was at work, and it was continuously reading warmer and warmer in the house. I as worried my furnace was stuck on. When I got home, it was reading 77F inside but it was really about 58. How did they mess this up so badly?
They don't care. After talking with 7 people, they told me to disconnect my account, which ends up disconnecting wifi. They said they have a known problem where the wifi chip overheats, heating up the temperature sensor. That seems to be the case for me. How stupid is that?
You'd think so. After being told it's my wifi/router causing the problems many times, I ended up going to Walmart and buying a second one. The new one is working perfectly. I started a request with my credit card to get my money back, and google allowed me to send the first one back. It was a stupid process.
Even you old analog thermostat had a manual fine tune screw. Even if my nest worked perfectly the location it is in has a constant increase in temp. Let me explain, it is on the wall behind my TV and a lot of other electronic gear all generating small amounts of heat. Cumulatively they make that spot about 5 deg higher than the rest of the room (even with a ceiling fan moving air around), this has been confirmed by using several other thermometers. In the old days when you had a known stable heat variance (hot spot) in the room you would simply adjust a screw and tilt the mercury up or down until you were actuating at the correct room temp. There is no manual or digital adjustment that I have found on the Nest. I do not care how smart it is, the room is dumb. It has no way of knowing where the hot or cold spots are. So in my case the room is actually warmer on the Nest side, and cooler on the Alexa side (opposite sides) Anyway I do not think my Nest is broken I just need to calibrate it to this room.
I am having the same problem. Temperature display is incorrect by at least 10 degrees...... in my case the display is at least 10 degrees COLDER than the house actually is...... If I set the thermostat for the a/c to go ON at 65 degrees it is actually 75 degrees in the house...... so it cannot be from some part overheating in the NEST. I disabled EVERYTHING and running in DUMB mode and it is still at least 10 degrees off! No matter what I do it is at least 10 degrees off!!!!! ANd that is for COOLING ..... I have no idea how bad it will be when the weather changes and I will have to HEAT the house. I cannot run it in heat/cool mode. I have to run it in dumb mode EITHER heat or COOL !!!! WHat a waste of money! My old dumb cheap OLD thermostat works better than this expensive piece of junk! AND so far I have not been able to find anyone at NEST to contact for a replacement! Label me DISGUSTED!!!!!
i finally got someone at NEST call 855-469-6378 there is a factory reset that is supposed to help the problem you can also call 800-419-0157 i will keep you posted if the instructions they are sending me helps
I talked with them 12-15 times. I got a replacement one from Walmart and it worked perfectly. Hardware resets on the first one didn't fix the issue. Some of them seem to have a hardware fault that causes them to get warm. Even the voltage measurement was wildly wrong. It would read 12v and then 60v. The new one doesn't do that, so there's probably a voltage regulator or something that's overheating.
Same for me. I bought and indoor outdoor clock and thermometer and mine is off by approximately 4 or 5 degrees. I could get it being 1 or 2 degrees off but 5 degrees is a lot. Constantly feeling cold when it was set to 70 and I would see that it was 65 on my other thermometer 🌡. Have to set it for 75 to get the desired temperature in my apartment. Silly really that they don't have a way to calibrate it!