Lennox, Carrier, Trane, General Electric, Rheem, Janitrol, York, Maytag, Whirlpool, Amana, Payne, Tempstar, Ruud, American Standard, Heil, Coleman, Goodman, Bryant, Ducane, Samsung, Mitsubishi, LG, Friedrich, Armstrong, Bard, Comfortmaker, Luxaire, Weatherking.

Serving:  Charlotte, Huntersville, Cornelius, Davidson, Mooresville, Concord, Midland, Locust, Mint Hill, Matthews, Stallings, Indian Trail, Lake Park, Monroe, Wesley Chapel, Weddington, Waxhaw, Hemby Bridge, Wingate, Marshville, Marvin, Fort Mill, Rock Hill, Pineville, Lake Wylie, Belmont, Stanley, Gastonia, Lake Norman, Mt. Holly, Tega Cay