https://www.googlenestcommunity.com/t5/Nest-Protect/Both-Protects-detecting-Carbon-Monoxide/m-p/725720#M11975 <P>Hello,</P><P>Last night, both of our Nest Protects started going off for the first time (installed about a year ago) detecting Carbon Monoxide. I have an all electric home, but yesterday was an air alert day near Dallas.&nbsp; &nbsp;I tried resetting them, and I currently have the batteries out of both, but the alarm keeps going off on my phone.&nbsp; Any guidance please? I feel like this is a misbehavior.</P> Wed, 02 Jul 2025 12:55:53 GMT shorton 2025-07-02T12:55:53Z https://www.googlenestcommunity.com/t5/Nest-Protect/Both-Protects-detecting-Carbon-Monoxide/m-p/725720#M11975 <P>Hello,</P><P>Last night, both of our Nest Protects started going off for the first time (installed about a year ago) detecting Carbon Monoxide. I have an all electric home, but yesterday was an air alert day near Dallas.&nbsp; &nbsp;I tried resetting them, and I currently have the batteries out of both, but the alarm keeps going off on my phone.&nbsp; Any guidance please? I feel like this is a misbehavior.</P> Wed, 02 Jul 2025 12:55:53 GMT https://www.googlenestcommunity.com/t5/Nest-Protect/Both-Protects-detecting-Carbon-Monoxide/m-p/725720#M11975 shorton 2025-07-02T12:55:53Z https://www.googlenestcommunity.com/t5/Nest-Protect/Both-Protects-detecting-Carbon-Monoxide/m-p/725730#M11979 <P>Hi&nbsp;<a href="https://www.googlenestcommunity.com/t5/user/viewprofilepage/user-id/757836">@shorton</a>&nbsp;</P> <P>Have you tried cleaning them?</P> <P><STRONG><A href="https://support.google.com/googlenest/answer/9254377?hl=en&amp;sjid=11440969323352777354-EU#zippy=%2Cnest-protect" target="_blank">Clean your Nest products - Google Nest Help</A></STRONG></P> Wed, 02 Jul 2025 13:43:37 GMT https://www.googlenestcommunity.com/t5/Nest-Protect/Both-Protects-detecting-Carbon-Monoxide/m-p/725730#M11979 David_K 2025-07-02T13:43:37Z