Return visit to clean the dryer vent, removed the flexible duct from the dryer then ran the brush trough the vent all way to the outside, cleaned the dryer and the filter. Got up on the roof then cleaned the termination cap. After cleaning tested the dryer operation and cycled. The client has 4 bathroom vents up high where birds has been nesting on one of them recommend to clean the vent then to install bird cages on all of them. 1 year membership renewal for 2 Hvac systems