Type II Certification authorizes technicians to service large appliances and low-pressure commercial refrigeration and air conditioning systems using CFC and HCFC refrigerants. This intermediate certification requires advanced understanding of system diagnostics, evacuation procedures, and proper handling of low-pressure equipment. Type II represents specialization in commercial centrifugal chiller systems and similar equipment.
Equipment Coverage
Type II covers centrifugal chillers, low-pressure air conditioning systems, and large commercial refrigeration units operating below 10 psi on the low side. These systems typically use R-11, R-123, or similar low-pressure refrigerants. Technicians must understand moisture contamination risks and specialized evacuation methods required for low-pressure equipment.
Technical Requirements
Type II certification demands comprehensive knowledge of large system diagnostics, recovery equipment operation, and EPA regulations specific to low-pressure equipment. Training covers system troubleshooting, proper leak detection, and evacuation procedures unique to low-pressure applications. This credential is essential for technicians working in large commercial facilities and industrial refrigeration environments.