Client did not want to repair system, system is 11 years old and he wants it replaced. He had nothing but issues throughout the course of its life. Noticed that the main trunk line for the return and supply are undersized for a 3.5 ton system. Only getting a 14 inch supply and return, should be 18 inches. Also, client wanted to add a return to the master bedroom. All other ductwork on the main side is original to home. Gave client estimate to replace 3.5 ton heat pump system with all new ductwork and IAQ. Client has multiple estimates to look over and will make a decision by tomorrow or over the weekend. Told client that I would follow up with him tomorrow afternoon.