I've seen settings for my Nest Thermostat to notify based on specific temperatures or when home or away, but I haven't figured out a way to get info on when the house is currently heating or when it is cooling.

Is there a way to do this? I assume I would need to buy some kind of hub, but which hub?

  • Do you want remote monitoring, e.g. actively use an app/page to see what's going on, or are you interested in a notification, e.g. "started/stopped heating"?
    – Helmar
    Mar 12 at 18:06
  • What I want to do with the info is irrelevant to the question. Both cases you pointed out would depend on Nest sending the info I'm interested in. Mar 13 at 0:39

Anything which supports the older Nest Thermostat API will have access to hvac_state which tells you if the HVAC is "heating", "cooling" or "off".

Anything that supports the newer Smart Device Management API will have access to the thermostat-hvac trait which does the same.

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