Ferguson Enterprises Inc. Crystal Lake IL has grown from a local supplier to a company with over 1400 locations and over 23,000 employees. Ferguson is a top-rated supplier of commercial and residential supplies as well as a supply house of HVAC/R, waterworks and industrial supplies. Areas Served: With over 1400 locations, Ferguson serves HVAC, plumbing and industrial contractors throughout the U.S. What Brands Does Ferguson Sell? Ferguson carries brand names like American Standard, Trane, Rheem, Goodman, Day & Night, White Rodgers, Diversitech, Parker Hannifin, Supco, Nu-Calgon, Amana, Fujitsu, Lux, Broan, Panasonic, Rectorseal and many other name brand HVAC supplies.