For the first time in decades, the commercial construction industry is operating under the most significant regulations under the AIM (The American Innovations and Manufacturing Act) act.  The focus has shifted from high-level manufacturing phase-downs to on-the-ground enforcement of how systems are installed, maintained, and documented.

Below are four components of the 2026 commercial refrigeration regulations:

1. The “15-Pound” Compliance Threshold

The most critical change to be aware of for 2026 is the expansion of federal oversight to smaller systems.

• The Rule: As of January 1, 2026, the threshold for mandatory leak repair and record-keeping dropped from 50 lbs to 15 lbs.
• The Impact: This brings roughly 70% more equipment under federal scrutiny, including thousands of previously exempt commercial walk-ins, reach-in freezers, and standard RTUs.
• Requirement: If a system contains more than 15 lbs of HFC refrigerant (GWP > 53), you must calculate the annualized leak rate every time refrigerant is added.

2. GWP Limits for New Installations

The Technology Transitions Rule now dictates what refrigerants can be designed into new commercial projects.

• Comfort Cooling – GWP Limit 700
• Industrial Process Cooling – GWP Limit 700
• Cold Storage Warehouses – GWP Limit 700
• Supermarket Systems – GWP Limit 1400

3. Mandatory Leak Repair & Reporting

Exceeding the allowable leak rate now triggers a mandatory repair process.

• Allowable Rates: 10% for comfort cooling; 20% for commercial refrigeration.
• 30-Day Limit for Repair: Once a leak exceeds the threshold, you have 30 days to conduct a verified repair. If the repair fails, you must develop a formal Retrofit or Retirement Plan within 30 days and execute it within one year.
• Chronic Leaker Rule: Any unit that leaks 125% or more of its full charge in a calendar year must be reported to the EPA by March 1 of the following year.

4. Automatic Leak Detection (ALD) Mandates

For large-scale commercial and industrial systems:

• New Systems: Any unit with over 1,500 lbs of charge installed after Jan 1, 2026, must have an ALD system installed and commissioned at startup.
• Existing Systems: Large systems installed before 2026 have until January 1, 2027, to be retrofitted with an ALD.

Working with Emtec Consutling Engineers to assist with Refrigerant Regulations

Most new commercial systems now utilize A2L (mildly flammable) refrigerants. Because these systems require active leak sensors and ventilation interlocks to mitigate fire risk, electrical precision during commissioning is vital. Emtec Consulting Engineers will verify critical safety measures to ensure your firm is compliant.  Contact one of our team members today.