Carrier Enterprises 4 Wilton Avenue Norwalk CT 6851 is the largest HVAC Distribution network in the North America with over 150 HVAC supply houses. Carrier Enterprise offers the best equipment brands replacement parts and supplies. Their employees are highly trained HVAC experts and are committed to providing their customers with the help they need. Areas Served: Carrier Enterprise has over 150 HVAC Supply locations throughout North America. What Brands Does Carrier Enterprise Sell? Carrier Enterprise offers brand names such as Aerosys Bryant Carrier Copeland Honeywell Keeprite MicroMetl Modine Payne Plenums Incorporated RCD Parts Reznor Spinnaker as well as many other name brand HVAC supplies.