The Comfort System Z-2000 is a commercial zone control system that allows a single HVAC unit to have up to 20 individual zones. Each zone is controlled by its own space thermostat and a modulating zone damper or diffuser. The Z-2000 works with single-stage, multi-stage or heat pump systems and has an auxiliary heat control option for each zone. The Comfort System Z-2000 is an affordable alternative to higher cost VAV systems and there is no programming required.