I'm brand new to this site and to the Geothermal world. I moved into my new home on July 28th, 2017 and I have four WaterFurnace units installed from 2006. Luck would have it...one unit is shot. I have it being installed as I type this. I purchased a 5 Series (3ton) unit and the associated air handler. My question is...coming from the HVAC world I have been using Nest Thermostats which I loved. I have read that they do not play well with GEO units. I have read that some Honeywell Wifi thermostat would be a great alternative. Do you? Or, do I install the Symphony? If I install the Symphony does that mean I need to install it on each unit (4)?? I hope not. Would it even be compatible with 2006 units? I love the technology but truth be told, I just want to make sure I can monitor the thermostats remotely or my wife and kids will put me in the poor house adjusting them all day. Thank you in advance for your time and assistance.