Dryer vent clean through attic, attic discharge. Spoke with homeowner and inspected dryer vent. It is impacted about 30% and has an improper exhaust connection, with homeowner permission, I removed screen and corrugated exhaust pipe, and reattached with proper hard pipe connections and sealed with mastic. Cleaned exhaust vent with 3 passes from above and 1 pass from below. Vacuumed excess debris, and cleaned dryer hose and dryer up to impeller. Cycled system on and it is properly running, although the homeowner mentioned the timer being out. Gave 5% military appreciation discount.