The Comfort System™ is said to be a contractor-friendly and reliable zone control system. The product offers auto changeover, system status lights, double-fused protection, control of up to nine zones, and requires no adjustments or special wiring, says the manufacturer. The system uses two-wire dampers and standard thermostats. Both heat/cool and heat pump versions are available. All components offer a two-year warranty. Jackson Systems, LLC, 100 E. Thompson Rd., Indianapolis, IN 46227; 888-652-9663; 317-227-1034 (fax); info@jackson systems.com (e-mail); www.jacksonsystems.com (website).