Century A/C Supply 1600 Clovis Barker Dr. Ste. 214 San Marcos TX 78666 offer top-notch training service selection and support. With 24 locations and online shopping Century A/C Supply has the expertise and HVAC supplies to provide customers with service beyond their expectations. Areas Served: Century A/C Supply has 24 HVAC supply house locations throughout Texas. What Brands Does Century A/C Supply Sell? Century A/C Supply offers name brands like Arkema Ecobee Fasco Fieldpiece First Company Honeywell Knauff Insulation Mueller Nu-Calgon Parker Hannifin Ritchie Ruud White-Rogers Yellow Jacket York and many other name brand HVAC supplies.