The Honeywell IAQ Series VisionPro Thermostats are more than just a thermostat, they are a control center for your home. They are able to control heating sources, cooling sources, ventilation, humidification, and de-humidification all from one source. And the best part? The thermostat installs with only 3 wires in your wall. The equipment interface module (EIM) gets installed in your boiler room (or wherever you keep your heating equipment) and the rest of the wiring is done right there, without having to go through any walls.
Honeywell thermostats and Honeywell VisionPro thermostats such as the YTH9421C1002 can be found at www.supplyhouse.com
