Company Overview


Our Mission



Grant-Dilling-Harris(GDH) formerly Dilling-Harris (D/H) offers a full line of carwash equipment, parts, and supplies. We have been serving the car wash industry since 1975. Our manufacturing and office facility is located in Plano, Texas with distributors, dealers and service support located through the United States and in many countries world wide.

GDH provides several models of self-service car wash equipment, vacuum cleaners, vendors, water conditioning equipment, chemical solutions and all major carwash parts and supplies.

GDH is a second generation family owned and operated business. We strive to provide the best possible products and support to all of our customers, treating all of our customers like “one of the family”.

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