San Diego Plumbers at $59.00/up drain cleaning. American Plumbing Co. is a well established plumbing business for over 35+ years. And A + rated San Diego Plumbing Company by the B.B.B. And is a licensed San Diego Plumbing Contractor. Serving the Greater San Diego Area. In San Diego residential plumbing. Having been taught by the Plumbing Heating Cooling Contractors for 2 1/2 years in the mid 80s.