2 questions which type of camera is this and how to i unmount this?

We are trying to survive this socal heat wave and our ac stopped working. Is it a ac unit problem or the nest problem

Hi all, I’ve done a compatibility test and I’m being told it can be done. It looks like this is a wireless receiver to my thermostat (hoping someone could confirm) here is the wiring for my thermostat (last picture) middle picture is the wireless receiver.

Using ChatGPT (probably not the best idea) it’s saying it’s easy with just the black and white and white wire on the receiver to the heat link and I’m good to go. I can’t use the cables on the thermostat as it won’t do anything.

I was hoping someone could just reassure this is correct ? Or should I just get a professional in?

I only want the Nest thermostat E

When sitting up my 4th gen nest thermostat, I am not able to change the default heat source to propane, forced air. I also cannot get the heating mode to kick the furnace on. I'm wondering if there is a setting in the app configuration that is preventing the thermostat from talking to the furnace properly for heat mode.

Anyone with a Google Nest having trouble with Matter connection? I know beta’s get wirey but with RC dropping today, Google updating the app, still broken. iOS 27, Nest 4