Installed with the company's icomfort Wi-Fi thermostat, the new iharmony zoning system maximizes energy efficiency by restricting heating and cooling in seldom-used rooms. However, unlike other zoning systems, the iharmony has in-zone thermostats, making it easy to precisely control each zone. And, with the icomfort Wi-Fi, homeowners can control each zone from any web-enabled device, including a smartphone. lennox.com