Dryer Vent Wizard of Northern VA (866) 498-7233 - Dryer Vent Wizard of Northern VA: Dryer Vent Wizard can diagnose problems and make necessary corrections to maximize air flow required for a dryer to operate safely and efficiently. The Wizard carries all the tools and materials needed to complete the entire job in one day, from dryer vent cleaning and repair to professional dryer vent installation according to current safety standards.