Phone/Internet control of Thermstat

[ga_geoff]

The HVAC system for my weekend home consists of a four zone 5 ton Lennox variable speed compressor heat pump with dual fuel (propane) for heating. It is controlled by a Harmony III controller with each zone having a Honeywell TH8320U1008 thermostat.

I would like to install a phone or internet control to be able to remotely set the temperature of (at a minimum) the main living area zone.

Could you recommend thermostat(s) and/or controllers to allow me to accomplish * I have asked the HVAC contractor that installed the system twice, but they apparently are not knowledgeable in this area.
Thanks.