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EPA Refrigerant Leak Rate Calculator
Enter your system data below to instantly calculate your annualized leak rate and check EPA Section 608 compliance. No account, no signup, no cost.
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EPA Leak Rate Thresholds
Effective January 1, 2026, the AIM Act (40 CFR § 84.106) governs HFC and high-GWP refrigerant appliances with a full charge of 15 lbs or more. Legacy ODS appliances (e.g., R-22) remain under 40 CFR § 82.157 (Section 608), which still requires ≥ 50 lbs.
| System Type | Leak Rate Threshold | Charge Threshold |
|---|---|---|
| Commercial Refrigeration | 20% | ≥ 15 lbs (as of Jan 2026) |
| Industrial Process Refrigeration (IPR) | 30% | ≥ 15 lbs (as of Jan 2026) |
| Comfort Cooling / Transport / Other | 10% | ≥ 15 lbs (as of Jan 2026) |
Under 40 CFR § 84.106(c)(2), commercial refrigeration systems with a full charge of 15 lbs or more must maintain an annualized leak rate below 20%. Verified against 40 CFR § 84.106, June 2026.
Comfort cooling systems (AC, heat pumps) must maintain a leak rate below 10% annually under 40 CFR § 84.106(c)(2). Industrial process refrigeration (IPR) has a separate, higher threshold of 30%.
As of January 1, 2026, the full charge threshold for HFC appliances dropped from 50 lbs to 15 lbs under the AIM Act, subjecting hundreds of thousands of additional systems to leak rate tracking.
Frequently Asked Questions
How is the annualized leak rate calculated?
The EPA formula annualizes your net refrigerant loss over a 12-month period. It divides the net pounds lost (refrigerant added minus refrigerant recovered) by the system's full charge, then scales that ratio to 365 days. Formula: (Net Loss lbs / Full Charge lbs) × (365 / Measurement Period Days) × 100. This gives you the percentage of the full charge that would be lost in a year at the current rate.
What happens if my system exceeds the leak rate threshold?
Under 40 CFR § 84.106 (AIM Act, effective January 1, 2026), you must repair the leak within 30 days of discovery (§ 84.106(d)), or develop a retrofit/retirement plan within 30 days if you elect not to repair (§ 84.106(h)). After repairs, verify the system is back below the threshold and document all service. Industrial process refrigeration systems requiring a process shutdown have up to 120 days to repair. Chronic violations risk EPA enforcement action including civil penalties per day per violation under the Clean Air Act, adjusted annually for inflation.
Does this calculator work for R-22 systems?
Yes, with an important regulatory note. R-22 is an ozone-depleting substance (ODS), so R-22 systems containing solely R-22 continue to be governed by 40 CFR § 82.157 (Section 608) with a ≥ 50 lb charge threshold, not the new 40 CFR § 84.106 AIM Act regime (which applies to HFCs and GWP > 53 substitutes, ≥ 15 lbs). For HFC systems (R-410A, R-454B, R-32, R-134a, R-404A, etc.) at or above 15 lbs, the 40 CFR § 84.106 thresholds — 20% commercial, 10% comfort cooling, 30% IPR — apply as of January 1, 2026.
Is this calculator free?
Yes — completely free, no account required, and no limit on how many times you use it. If you manage multiple systems, RefrigerantTrack's free plan lets you track up to 5 systems with automatic compliance monitoring, repair deadline alerts, and one-click EPA report generation.
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Start Free — No Credit CardLast updated: April 2026
Researched by the RefrigerantTrack Research Team