EPA 608 Core · Leak Repair Requirements · Medium
From January 1, 2026, which HFC appliances fall under EPA's leak repair rules?
Answer: A. 15 lbs or more of HFC with GWP over 53.
- A15 lbs or more of HFC with GWP over 53.✓ Correct
- BEvery HFC appliance, whatever its charge.
- COnly those with 50 lbs or more of HFC.
- DOnly small appliances under 5 lbs.
Why A is right
EPA's Emissions Reduction and Reclamation rule under the AIM Act (89 FR 82682) applies leak repair from January 1, 2026 to appliances with 15 lbs or more of an HFC, or an HFC substitute, with a GWP above 53. Residential and light commercial air conditioners and heat pumps are exempt, and ozone-depleting refrigerants keep the 50-lb threshold of 40 CFR 82.157.
More Core questions
- Under the AIM Act (2026), what determines HFC repair thresholds?
- Why can CFCs released at ground level damage the ozone layer?
- When did U.S. production of CFC refrigerants such as R-12 end?
- What does refrigerant do inside the evaporator?
- Which component raises the pressure and temperature of refrigerant vapor?
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.