Performed mini split estimate for customer Performed Home fan maintenance: -removed fan cover -cleaner motor -cleaned inner fan casing -cleaned outer fan casing -cleaned fan blade -reattached fan cover -Cycled Unit Customer mentioned that he thinks performance of unit has deteriorated over time and was hoping maintenance would improve it. I informed customer that fan is very basic and made a motor and fan blade. Cleaning it annually is important for longevity but will not drastically increase efficiency or running ability of unit. If customer thinks unit is running poorly I recommended calling quietcool to check on warranty status of unit.