Client says that system making a loud vibrating sound when blower comes on. Did an inspection on air handler, found heavy amounts of biological growth buildup inside air handler and ductwork. The blower housing is broken in the center as well as the blower wheel which is causing heavy vibration. Gave client solutions for issues with system, however, system is 16 years old and recommend replacing due to age and cost of repairs. Client decided to move forward with replacing system. Installing a new 2.5 ton LG inverter heat pump system with all new ductwork starting tomorrow, October 30. Job should take 2 to 3 days. Collective 50% deposit.