Upon arrival found system running. Checked inside unit and found return box dirty and blower motor dirty. Recommended blower motor to be pulled and cleaned. Checked outdoor unit and found that my pressures were showing poor airflow across my evaporator coil. Checked inside coil and found it clogged with dust and dirt. Home owner approved cleaning of evaporator coil in place. Cleaned coil and checked pressures. Pressures look a lot better. Homeowner said he would clean blower himself.