EPA Section 608
EPA-Approved Section 608 Certification is needed to service building air conditioning and refrigeration systems.
EPA Section 608 Technician Certification
Type I Certification – Can only work on Small Appliance (5lbs or less of refrigerant)
Type II Certification – Can only work on Medium, High and Very-High Pressure Appliances.
Type III Certification – Can only work on Low-Pressure Appliances.
Universal Certification – Someone who possesses Type I, Type II and Type III Certifications
Mainstream offers free study materials for Type I Open Book Certification online:
For technicians using the Type I Open Book format only, the exam is open-book, but the passing grade is 84% (per section) instead of 72% (per section) and the core questions must be repeated in a proctored environment if other certifications are later desired. We suggest the closed book exam! Click here to find a proctor location in your area.