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Refrigerant Leak Rate Calculator
Calculate your system's annualized refrigerant leak rate and check it against EPA Section 608 compliance thresholds instantly. Enter the system charge, pounds added, and service period — get your result in seconds.
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EPA Section 608 Leak Rate Thresholds
Under 40 CFR § 84.106 (AIM Act, effective January 1, 2026), owners and operators of HFC refrigerant appliances with a full charge of 15 lbs or more must monitor and repair refrigerant leaks. Exceeding the applicable threshold triggers mandatory corrective action.
| System Type | Leak Rate Threshold |
|---|---|
| Commercial refrigeration | 20% / year |
| Industrial process refrigeration (IPR) | 30% / year |
| Comfort cooling (air conditioning) | 10% / year |
| Refrigerated transport / other ≥ 15 lbs | 10% / year |
Applies to HFC appliances with full charge ≥ 15 lbs. Source: 40 CFR § 84.106(c)(2). Verified June 2026.
Key Facts About EPA Refrigerant Leak Regulations
Under 40 CFR § 84.106(c)(2) (AIM Act, effective January 1, 2026), the annualized leak rate threshold for commercial refrigeration systems with a full charge of 15 lbs or more is 20% per year. Comfort cooling systems (AC) have a threshold of 10% per year. Industrial process refrigeration (IPR) has a threshold of 30% per year. Verified against 40 CFR § 84.106, June 2026.
If a system exceeds the applicable threshold under 40 CFR § 84.106(d), the owner must repair the leak within 30 days of discovery (120 days for industrial process shutdowns), or develop a retrofit or retirement plan within 30 days under § 84.106(h).
Violations can result in civil penalties per day per violation under the Clean Air Act, adjusted annually for inflation.
Technicians must be EPA Section 608 certified to purchase refrigerants sold in containers larger than 2 lbs and to service systems with 5 lbs or more of refrigerant.
Refrigerant Leak Rate Calculator — Frequently Asked Questions
What is the EPA leak rate threshold for commercial refrigeration?
Under 40 CFR § 84.106(c)(2) (AIM Act, effective January 1, 2026), the annualized leak rate threshold for commercial refrigeration systems with a full charge of 15 lbs or more of HFC or high-GWP refrigerant is 20% per year. Industrial process refrigeration (IPR) has a threshold of 30% per year. Comfort cooling (AC) systems have a threshold of 10% per year — not 30%. If your system exceeds the applicable threshold, you must repair the leak within 30 days (§ 84.106(d)) or develop a retrofit/retirement plan within 30 days (§ 84.106(h)). Verified against 40 CFR § 84.106, June 2026.
How do I calculate annualized refrigerant leak rate?
The EPA formula: (Net Refrigerant Lost lbs / Full Charge lbs) × (365 / Days in Period) × 100. Net refrigerant lost equals total pounds added minus any pounds recovered during service. If you added 10 lbs to a 50-lb system over 90 days, the annualized leak rate is (10/50) × (365/90) × 100 = 81%. This would be well above the 20% threshold and require immediate corrective action.
What happens if my system fails the leak rate calculation?
If your system exceeds the applicable threshold under 40 CFR § 84.106, you have two options: repair the leak within 30 days of discovery (§ 84.106(d)), or develop a written retrofit or retirement plan within 30 days (§ 84.106(h)). The system must not be recharged unless you are actively repairing it. Violations can result in civil penalties per day per violation under the Clean Air Act, adjusted annually for inflation.
Stop calculating by hand
RefrigerantTrack automatically calculates your leak rate every time you log a refrigerant addition, flags systems approaching the threshold, and generates EPA-compliant service logs. Free for up to 5 systems.
Start Free — No Credit CardLast updated: April 2026
Researched by the RefrigerantTrack Research Team