topic Re: Thermostat temp sensor wrong in Nest Thermostats

Thermostat temp sensor wrong

Macarthur2000 — Sat, 30 Oct 2021 09:26:47 GMT

Nest thermostat reads wrong temp.

for instance, this morning temp in house was 15, nest showed 18, so the heating never came on, everyone in house cold. I’ve reset it countless times, nowhere near a window, insulated behind it. I’ve even connected it to the garage wifi incase the wifi in the hose was too close.

love the thermostat, but this is really annoying.

its doing my box in.

Re: Thermostat temp sensor wrong

CraigP — Mon, 01 Nov 2021 19:38:49 GMT

I have this exact issue too

anyone know of any fixes….?

Re: Thermostat temp sensor wrong

Greygeek — Tue, 02 Nov 2021 04:16:51 GMT

When I first got my NEST Generation 3, I kept my old thermostat next to it for a couple of months and indeed, the NEST's temperature sensor always reported a different value (2-3 degrees Fahrenheit higher). So I borrowed a more precision temperature sensor device from my neighbor who's an HVAC guy, and sure enough, the NEST reads high. We've just adjusted our programmed set temperatures to higher number on the NEST, and we mentally subtract a couple degrees from what the NEST is displaying.

The much bigger problem with the NEST makes it a terrible thermostat for Forced Hot-Air heating systems because it has a hard-coded wide temperature band before it turns on the heat. (other posts on this forum complain about same problem controlling A/C as well). Our home has been quite uncomfortable in cold weather since we installed the NEST Gen 3, and there's no way to change the setting of the too-wide temp range required to trigger heat or cool functions. Dozens of posts / threads complain about this, but nothing has happened to improve the NEST firmware to fix it.

Re: Thermostat temp sensor wrong

Ethereal_Leaf — Mon, 20 Dec 2021 20:11:35 GMT

I have this issue as well. Just started it today after having used for years in the exact location.
The downstairs thermostat reads hotter than the upstairs one.

It’s reading 76 and the outside temp is 44. The upstairs is reading ~66. No way is actual temp near 80 and hotter than upstairs.

Re: Thermostat temp sensor wrong

GeoRy — Sun, 02 Jan 2022 20:44:55 GMT

Having problems with Google products is one thing. What is pushing me to Amazon is the total lack of addressing these longstanding issues. My outside temp is 20 degrees low and the wide band temps in summer and winter uncomfortable. The wrong temp is only on Thermostat, My Hubs, Home app etc are correct at same address.

Re: Thermostat temp sensor wrong

AJ6 — Mon, 10 Jan 2022 16:29:16 GMT

Same issues as everyone else and it's sad to see that the issue continues in 3rd gen thermostats as well... I'll probably switch to the EcoBee, I've had enough of googles horrible products and customer service

Re: Thermostat temp sensor wrong

BootsWithDefer — Tue, 25 Jan 2022 08:01:32 GMT

Having this issue as well. No fix?

Re: Thermostat temp sensor wrong

AJ6 — Tue, 25 Jan 2022 08:14:45 GMT

Nope google doesn't care about these known issues they'll just tell you to buy a new one

Re: Thermostat temp sensor wrong

CraigP — Tue, 25 Jan 2022 08:50:03 GMT

Mine suddenly resolved itself after 2 reset - wasn’t Instant but it works ok again now

Re: Thermostat temp sensor wrong

thetizzo — Thu, 03 Feb 2022 19:17:38 GMT

I'm having the same issue with my Nest thermostat. It's reading the current temperature like 5-7 degrees F too high. As a result the house is definitely chilly during the winter. My older nest did not have this same issues so something has definitely changed.

Re: Thermostat temp sensor wrong

AJ6 — Thu, 03 Feb 2022 21:23:50 GMT

I have the older 2nd gen and people with both 3rd and 2nd gen are reporting the same issue... It seems Google didn't bother to fix this issue that seems to affect a few units on their newer models either

Re: Thermostat temp sensor wrong

Natewatson — Sun, 06 Feb 2022 04:09:30 GMT

Ya what is total bull**bleep** is that they only kick you onto this thread to read about how everyone else has this issue. This thermo totally sucks. And the CS.

Re: Thermostat temp sensor wrong

Jotorobi — Mon, 07 Feb 2022 03:51:04 GMT

I’m having this issue as well. I have the temp set to 70. It’s 25 degrees outside and it will heat for a few minutes then turns off and says it’s 72 in the house . Then the temp it says never drops so the heat doesn’t come on until I go and manually reset . Once it turns back on it shows a temp of 68 and heat kicks on. Then it heats but doesn’t actually reach 70 degrees even though it says 72. I will try to do a factory reset tomorrow I guess . The thermostat has been in the same spot since it was installed around 5 years ago and worked great until now .

Re: Thermostat temp sensor wrong

1259978 — Wed, 16 Feb 2022 17:25:43 GMT

Having exactly the same issue as all of you, but my thermostat thinks it's 96 degrees in here. Actually 58. Since the temp is higher than you can set the thermostat, it is not heating my house at all. Sorry I got this thing.

Re: Thermostat temp sensor wrong

5tratocaster — Thu, 17 Feb 2022 18:05:40 GMT

I have been having an issue with my Nest thermostat reading a degree or so high for a couple of years, but recently it's got worse. I now have three other thermostats alongside the Nest, all reading 16 degrees C, while the Nest reads 18.5 degrees. I can accept a difference of a half to one degree if buying cheap thermometer, but a two and a half degree error in a device costing close to £200 is just unacceptable. Nest have known about these errors for years and it's about time they issued an update to correct the problem. Saying it's because the stand or wall mount gets warm from the electronics in the stat isn't good enough. If they know that causes an error, why not re-calibrate the therrmostats to allow for it.

Re: Thermostat temp sensor wrong

LukeDaniell — Fri, 04 Mar 2022 13:41:55 GMT

The actual temperature may be in the 30s, but the temperature will display as being in the 70s. This is a known issue with current and prior generations of the thermostat.

It will never be fixed by Google. The reason why is that corporations who own apartment complexes are a HUGE source of Google's revenue, and not just for the thermostats but also other services like Google Fiber. These corporate landlords are bound by laws to provide adequate heat in the dwellings they rent out and can be fined heavily for not doing so. These landlords purchase and install Google thermostats knowing that they will never display an accurate temperature when it's unbearably cold. That way, when they are investigated or sued for not providing adequate heat, they can say "we didn't know there wasn't enough heat because the Google thermostat displayed an adequately warm temperature."

It's ingenious really, albeit devious -- both on the part of corporate landlords who want to save money by shirking their legal obligations, and on Google's part, who makes billions enabling this corporate landlord sociopathy.

Re: Thermostat temp sensor wrong

Russvantine — Thu, 05 May 2022 18:24:50 GMT

I have the same problem except my NEST shows an indoor temperature of about 10 degrees too cool which means I have to mentally subtract 10 degrees when setting the cooling. Is this “normal”???? Not acceptable!

Re: Thermostat temp sensor wrong

5tratocaster — Thu, 05 May 2022 21:24:45 GMT

I wonder why no-one from Google or Nest has commented on or responded to the points made in this thread. I would have thought it was quite an important subject for them.

Re: Thermostat temp sensor wrong

KristenW — Fri, 13 May 2022 01:46:16 GMT

Just added a sensor to the baby's room. His baby monitor is reading 66 degrees and it feels cool up there, but the sensor is reading 76 degrees. It is much warmer downstairs near the thermostat, but that is reading the same temp. Something is wrong with the sensor reading. I've reset once already but there has been no change to the reported temperature. Will be sad if all this effort was useless - I bought 2 nests already because the first one didn't work with the sensors but I was past the return window. Just trying to keep the baby's room within a temperature range!

Re: Thermostat temp sensor wrong

donallaire — Sun, 10 Jul 2022 03:30:01 GMT

My nest gent 3 has been reading 6 degrees F cooler than it really is according to 3 other thermometers and the nest remote room temp sensor we have. I’ve not used the auto heat/cool feature ever because it’s hard coded 5 degree variance. I bought an expensive smart thermostat that is less functional than the conventional one I replaced with it. 10 nest protect detectors and they’ve stopped connecting to nest externally 1 year after purchase so I have no idea if smoke detectors going off at home when not there. I spent $5,000 on all my google/nest security, protect and thermostat 2 years go worst investment ever.