A business method utilizing a Principal Entity to provide Commercial Kitchen Ventilation (CKV) systems including components such as hood and duct systems direct to owners of food service facilities. In one example, Principal Entity selects members of a contractor network, provides or arranges CKV instruction leading to CKV installer certification for members supports a continuing certification instruction program and facilitates CKV licensing of certified members by governmental code agencies. The Principal Entity may further create a business conduit facilitating participation of CKV component manufacturers in training that may lead to additional certifications of contractors as certified installers and/or servicers of manufacturer's components. The business conduit example may also provide tools and business systems to combine the purchasing power of members through the Principal Entity to facilitate the transfer of products and services between manufacturers, members and/or owners at greatly reduced costs yet with enhanced levels of service and code compliance.