In case anyone is interested, just confirmed the Nest smoke and CO detector is now supported. I couldn't find any mention on the currently supported devices web pages and last fall the answer in this forum was "no". Must have missed the announcement...
Here is the relevent chat from customer service:
...I now wish to purchase and connect the Nest smoke and CO detector (model S3003LWES). Do you support this device? I only find references to the Nest thermostat. Thanks.
You are now chatting with Devyne
I am happy to inform you that yes, Nest smoke and CO detector is compatible with Comcast.
Devyne 4:30:56 PM
It does require a technician visit to install. Now if Xfinity Home could finally deliver on the couple year old announcement to support Arlo cameras.
Have you now confirmed whether the Nest smoke and CO detector is supported? Nest says their smoke/CO detector is not supported by Xfinity!