View visual findings from this job here - https://visionshare.xoi.io/?id=XA-853F-749592B1410E474282B9A734E3B07811 Customer has a musty smell from the first floor AC unit- He states when he turns the system on the first floor has a bad odor: At arrival note order in home Called for cooling on the thermostat- There is a slight smell, but nothing overpowering Check the furnace coil condenser system in the Mechanical room off of the garage Found it completely plugged filter- Replaced provided by customer Also replaced the second floor filter in the return grill provided by the customer Indoor blower motor wheel and assembly- dirty Check the return ductwork- dirty Check the supply ductwork on the system- dirty Check for a mold or bacterial growth- none found Explain all findings with homeowner as he was with me throughout the service call Customer also stated that they have not done an annual maintenance in the past 10 years Recommended Maintenance on furnace coil condenser system syst