Under the 40 CFR Part 84 rule in effect from January 1, 2026, what trigger leak rate applies?

Leak repair requirements · EPA 608 Type II. The correct answer, and the reasoning behind it.

Leak-rate thresholds, repair deadlines, extensions and records.

The question

A walk-in freezer at a restaurant holds 20 pounds of R-404A, an HFC. Under the 40 CFR Part 84 rule in effect from January 1, 2026, what trigger leak rate applies?

• A10 percent
• B30 percent
• C20 percentCorrect answer
• DNone; it is below 50 pounds

Why “20 percent” is correct

Part 84 leak repair covers appliances with 15 pounds or more of an HFC with a global warming potential above 53, such as R-404A. Restaurant refrigeration is commercial refrigeration under 40 CFR 84.102, which has a 20 percent trigger rate.

Source: 40 CFR 84.106(a); 40 CFR 84.106(c); 40 CFR 84.102

Why the other answers are wrong

• 10 percent — 10 percent is the comfort cooling rate.
• 30 percent — 30 percent is the industrial process refrigeration rate.
• None; it is below 50 pounds — The 50-pound threshold is for Part 82; Part 84 starts at 15 pounds.

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