Upon arrival for tune up system off. Customer states tree limb fell and bent vent piped and damaged cap. Turn unit on. Furnace came on. No debris inside of inducer. Inducer has good amp draw. Flame being properly pulled through. Blower and coil clean. Drain line clear. Inspected outdoor unit. Fan and compressor amp draw within unit specifications. Capacitor within tolerance. Refrigerant pressure good. Recommended repair of pipe, collar and cap for vent pipe. Customer agreed. Will order vent pipe, collar and cap and return for proper repairs.