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Nest Protect false Co2 alarm

Community Member

Came home to Co2 alarm from Nest Protect going off in garage.  I have all 3 doors wide open and it says that the Co2 is getting worse. Moved a Kidder stand alone Co2 detector into the garage and it reads 0 meaning no Co2. Is this the result of a faulty unit?


Community Member

Hello Jddjr, 
I can attest to being told by Nest support that my Protect smoke alarm falsely starting was due to a faulty product, and I was directed to order a new one. I have not ordered a new one since the one I have is only a few years old. My support thread was closed out by Google while I was out of town, so am not exploring it further.  On the lookout for a more reliable product!  I hope you get better results.  

Community Specialist
Community Specialist

Hi there, 


I apologize for my late response and thank you for all of your patience while waiting for a reply. I can definitely understand how frustrating your situation must be, but I wanted to make sure that your issue was addressed. Do you still need help with this issue? I know that there's been a delay in response since you posted.


Please let me know if you need further assistance. 

Best Regards, 


Community Member

Thanks for your response. The situation happened a second time to google sent me a replacement Nest Detect.  All seems to be working fine now.

Thanks for checking in.


Community Specialist
Community Specialist

Hey folks,
It looks like we have come to a solution so I'm going to be locking this thread. If you have any other concerns or questions, please feel free to create a new thread.

Have a great day.
Garrett DS