If your heating or air conditioning system is to function with maximum efficiency, it must be clean. Every time the system turns on, the dust and dirt in the system circulates... not just within the system itself, but throughout your home or building. The Vacuum Man is an expert in the use of the Pringle Power-Vac, the powerful vacuum equipment that cleans all supply and return ducts, plenums, heat exchanger, blower compartment fans, and registers.