Dual furnaces is extremely common. I would imagine newer, smart thermostats would be fully aware of this and have way of differentiating between floors. I really don't think 2 different models would be necessary.
If I'm wrong, that's a bit of an oversight.
A light google search (now you've got me curious) says the Nest thermostats can do this. Ecobees seem to utilize zone sensors....interesting. But ya, if you have 2 thermostats, 2 nest thermostats can do the job.
Last edited by GoinAllTheWay; 01-24-2019 at 02:45 PM.
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