Understanding EPA Compliance Thresholds

EPA regulations require HVAC professionals to track and repair leaks in refrigerant-containing equipment. This guide explains the thresholds and requirements.

What Are EPA Thresholds?

EPA thresholds are annual leak rate percentages that, when exceeded, trigger mandatory leak repair and reporting requirements under 40 CFR Part 84, Subpart C (effective January 1, 2026).

Threshold Levels by Appliance Type

Different types of appliances have different leak rate thresholds:

Commercial Refrigeration (20% threshold)

• Supermarkets
• Walk-in coolers
• Refrigerated display cases
• Ice machines
• Vending machines

Comfort Cooling (10% threshold)

• Air conditioning systems
• HVAC equipment in occupied spaces
• Residential and commercial AC units

Industrial Process Refrigeration (30% threshold)

• Industrial chillers
• Process cooling systems
• Complex customized refrigeration

How Leak Rates Are Calculated

The annual leak rate is calculated using this formula:

Leak Rate (%) = (Total Leak Amount / Equipment Full Charge) × 100

Example Calculation

A rooftop unit with a full charge of 25 lbs that has leaked 3 lbs over 12 months:

Leak Rate = (3 / 25) × 100 = 12%

If this is a comfort cooling unit (10% threshold), it would be over the threshold and require repairs.

What Happens When You Exceed the Threshold?

When equipment exceeds its EPA threshold:

1. Repair Deadline - You have 30 days to repair the leak
2. Verification Test - After repair, you must verify the leak is fixed
3. Follow-up Inspections:
   • Quarterly inspections for commercial/industrial systems ≥500 lbs
   • Annual inspections for systems 15-499 lbs
4. Documentation - All repairs and tests must be documented
5. Reporting - Chronically leaking appliances (≥125% of full charge in a year) must be reported to EPA

The 15 lb Jurisdiction Threshold

Effective January 1, 2026, equipment containing 15 lbs or more of HFC refrigerant (with GWP >53) is subject to EPA leak repair regulations under 40 CFR Part 84, Subpart C. This is a significant reduction from the previous 50 lb threshold under Part 82, and now covers many smaller HVAC systems including:

• Small rooftop units
• Walk-in coolers
• Residential heat pumps (larger models)
• Mini-split systems (multi-zone installations)
• Small commercial refrigeration equipment

Note: Low-GWP refrigerants (GWP ≤53) are exempt from these requirements.

RefriTrak's Compliance Features

RefriTrak helps you stay compliant by:

• Automatic Calculations - Leak rates calculated in real-time
• Threshold Monitoring - Alerts when units exceed thresholds
• Repair Tracking - Document repairs and verification tests
• Inspection Scheduling - Set up quarterly/annual follow-ups
• Report Generation - Create compliance reports for EPA

Best Practices

To maintain compliance:

1. Track Everything - Record all refrigerant movements accurately
2. Regular Inspections - Don't wait for leaks to become obvious
3. Quick Repairs - Fix leaks promptly when detected
4. Good Documentation - Keep detailed records of all work
5. Use Technology - Let RefriTrak automate calculations and tracking

Common Mistakes to Avoid

• Forgetting to record small additions of refrigerant
• Not tracking recovery amounts during service
• Missing verification test deadlines
• Inadequate documentation of repairs
• Ignoring follow-up inspection requirements

Need More Information?

• Review EPA's official guidance at epa.gov
• Check our leak tracking guide
• Watch our video tutorial above
• Contact support with specific questions

Stay compliant and protect the environment!