Harold started his PowerVac manufacturing & duct cleaning career in 1957. In 1968, he started Harold's PowerVac Inc., which remains a family-owned and operated business to this day. Since then, his son "Dave Rahn" has joined the company. Dave is now President of the company and in charge of all operations. To maintain the highest assurance of quality and performance, Dave or Harold are involved in all aspects of the manufacturing and quality control of their product. They also operate a furnace & duct cleaning business, which uses all the products they sell, on a daily basis. In 1998, they designed and began manufacturing a gas portable vacuum called the HORNET.