Shearer Supply Is A HVAC Distributor Of Equipment And Supplies. Founded in 1983, SHEARER SUPPLY proudly serves as the exclusive American Standard Distributor for Texas, Oklahoma, Western Louisiana, Eastern New Mexico, Arkansas, Northern Mississippi, and Western Tennessee. SHEARER SUPPLY provids eyour company with the product and resources it needs to succeed. Along with truly top-of-the-line American Standard HVAC products, we help you thrive with extended warranties, dealer financing, generous co-op programs, floor plans, and marketing and advertising assistance.