Upgrade to Ecobee4 Thermostat

[jsj]

I currently have 2 thee-wire room Thermostats and a ABS-OR-3 control panel with air valve dampers. I want to upgrade the thermostats to 2 Ecobee4 thermostats. Is this possible? The furnace is gas fired hot air with central cool air.

[Paul Z.]

You will have to up grade you zone board to a NCM-300 and possibly rewire for thermostats, require a (4) four wire. Call me at 1-800 446-3110-X490.