Upon arrival found lobby unit not working. Found return grill dirty and clogged, Checked RTU and found that the blower wheel key had disintegrated damaging the blower shaft, blower pulley, and bearings. Found that the blower wheel is dirty and needs to be cleaned, found filters clogged and need to be changed, found belt cracked, and all three capacitors for the three condenser fan motors are below tolerance range. Due to age of system and amount of work needed to be done recommended replacing unit as well. System is 12 years old and after repair is made there may be other issues that we canâ€™t see yet. Emailed estimate over for repairs and waiting on quote to replace system. Parts are in stock at Carrollton carrier.