Just bought a new (<6 years old) house and it's two stories, but only has a single furnace in the attic and a single condenser outside. However, there are two thermostats that work (semi) independently of one another.
The master on the second floor seems to have more options than the first floor thermostat. They are Honeywell models and I know there is a damper control in the attic vents to turn off the air flow on one side or the other if it's thermostat is set to off.
I'm sure I cannot have heat upstairs and cool downstairs since it's still just one system. But I can control the temperature per floor with each thermostat.
So my question is can I replace this master/slave combo with a Sensi programmable on each? I had them at my previous home and love the ability to easily program and control with my phone.
Will they automatically talk to one another with regard to "heat on" for example? Is there something else in the attic/furnace area I should be looking at as well?
Any tips or advice would be helpful as well. :)