The definition does NOT include hermetically sealed refrigeration systems used on motor vehicles for refrigerated cargo, or the air conditioning systems on passenger buses which use HCFC-22 refrigerant. Section 609 certification is required for those working on MVAC systems. Section 608 certification is required for those working on hermetically sealed refrigeration systems used on motor vehicles for refrigerated cargo, or the air conditioning systems on passenger buses which use HCFC-22 refrigerant. Study the Technician's Study Guide and take the test on-line. A temporary EPA approved document, including your certification number, is issued immediately.
Permanent credentials follow in the mail.