EPA 608 Type II · Leak Repair Requirements · Medium
Under the AIM Act (2026), what is the leak repair threshold for commercial HFC systems with 50+ lbs?
Answer: A. 20% annual leak rate.
- A20% annual leak rate.✓ Correct
- B30% annual leak rate.
- C10% annual leak rate.
- D15% annual leak rate.
Why A is right
Since January 1, 2026, the AIM Act ER&R rule sets a 20% trigger for commercial refrigeration holding 15 lbs or more of HFC, so a 50 lb system is covered. It matches the Section 608 trigger for CFC and HCFC systems.
More Type II questions
- What is the leak repair threshold for an Industrial Process Refrigeration (IPR) system with 50+ lbs?
- What is the leak repair threshold for Comfort Cooling appliances containing 50 or more pounds?
- How long do you have to repair a 50+ lb commercial system if the leak rate exceeds the threshold?
- Under the updated AIM Act regulations (effective Jan 1, 2026), what is the new threshold for mandatory leak monitoring and repair on comfort cooling appliances containing HFCs?
- To speed up recovery on a Type II system, how should refrigerant be removed first?
Go deeper with the study guide AIM Act 2026: The HFC Leak Repair Rules for HVAC Techs, try the free 10-question test or browse all EPA 608 practice questions.
A practice question written for study, checked against 40 CFR Part 82, Subpart F. It is not an official EPA exam question, and this site is not affiliated with the U.S. EPA.