Dryer vent cleaning and AC service on Blue Shield plan. Inspected and found the dryer vent had come loose in the attic at the ceiling joint point. This was causing the dryer vent to suck in attic insulation all the way to the roof exhaust point creating a major clog. Rebuilt the broken dryer exhaust vent, reattach with screws and metal tape. Cleaned out dryer exhaust vent with five passes. Cleaned up excess degree, reinstall dryer, tested and verified proper dryer function. Washed condenser thoroughly, checked capacitor and contactor. Went in attic checked drain line evaporator coil, air handler. Cycled system on and tested and verified refrigerant pressure via sub cooling and electrical components. System is running great at this time. Left one 14 x 30 and two 14 x 24 filters included with Blue Shield plan with customer.