re: Ecobee 3 or 4?

I should have gotten Ecobee over Honeywell. There's no difference in Summer but for winter I had to get creative.

2nd floor thermostat is on the second floor landing. If all the room doors are closed the heat from bottom floor gets trapped up there, so the 2nd floor heat doesn't turn on causing the rooms to freeze. I had to figure out setting the first flow low enough at night that the 2nd floor thermostat triggers and heats the rooms just right.

Goofy but "works". Anyone with similar layout be on notice.