Nest Thermostat 3 Humidity Reading Incorrect

[Phil-L]

There’s numerous posts here about humidity settings incorrect (relative to standalone hydrometers).

I have two gen 3 learning thermostats, with latest software and both read 5-7% higher than the standalone hydrometers.

is there a “fix” for this, or is this a design flaw (given the multiple reports of issues).

thnx

[Markjosephp]

Hello Phil-L,

Uh oh! I'm sorry to hear you're having an issue with your Nest Thermostat not reading the temperature correctly. I'd love to know more about this.

• When was the thermostat installed?
• Where did you install your thermostat? (in a room and on a wall or stand)
• Do you have other active Nest thermostats?
  • If yes, do they show the same issue?
• Could you provide a rundown of all the steps you've tried?
• Please gather the signal strength value. Go to Settings > Technical Info > Network.
• If you have a thermometer, take a photo of the thermometer next to the Nest Thermostat. Both the thermometer and thermostat screens should be visible in the photo and show the difference in each other’s readouts.

Going over these steps might help:

1. Restart your thermostat.
2. Turn on the sunblock.
   1. Settings > Nest Sense
3. Check if the thermostat is near a heat source.
   1. Air vents that direct warm air
   2. Appliances (which include large televisions)
   3. Electrical outlets
   4. Plumbing (hot water pipes in old buildings are frequently not insulated)
   5. Warm air in the wall
   6. Other potential heat sources
4. Cover the wall with a duct seal compound.
5. Check the thermostat's network connection.
   1. Disable the Wi-Fi network for 24 hours.
   2. Settings > Reset > Account Connection/Network

Keep me posted.

Regards,
Mark

[Phil-L]

Thank you Mark.

I have two, one upstairs, one downstairs.

They are both running V6.2-27.

both installed on “interior” walls (wood frame / Sheetrock) and away from windows.

I’ve just purchased house where these at, previous owner says they haven’t had long (but don’t know what that means - but they are both gen 3.

neither near vents, heat sources (only a/c on at moment) or tvs, etc.

temp reading is ok, the humidity is “off” it reads ~6% to 7% different (higher) than my standalone meter.

have reset, have removed from wi-if, will let you know if this makes any difference.

appreciate the assist

[Markjosephp]

Hey there,

Perfect! Thanks for the details. If anything comes up within 24 hours, let me know, as I would be glad to know what the result would be.

Best,
Mark

[Phil-L]

still the same thing mark (I also turned sunblock on).   Temp reading on both ok - within +/- 1C of external sensors … but humidity reading on both these nests still about 6% to 7% higher than my external meters.   Are these things supposed to be accurate ?  seen lots of comments that this function doesn’t work very well, so want to see if I am chasing something that might not work (this is my first use of these Nest Thermostats).    
thank you

[Markjosephp]

Hi Phil-L,

Thanks for keeping me in the loop, and I appreciate you doing all the steps. We'd be happy to take a look at this for you.

Could you please fill out this form with the needed information? A member of our senior support team will be in touch over email to help.

Best,
Mark

[Markjosephp]

Hi there,

Checking back in — how's it going? Have you managed to fill out the form? Let us know so we can move forward.

Regards,
Mark

[Phil-L]

Sorry for the delay, yes just completed Mark.  Thnx

[Markjosephp]

Hello there, Phil-L,

No biggie! We have received your form. Soon, a member of our Senior support team will contact you via email. So please continue the conversation there, as this thread will be locked within 24 hours.

Best regards,

Mark