Testing and Certification for HVAC/R Equipment Using Flammable Refrigerants

HVAC/R products using flammable refrigerants must be designed to minimize ignition risk under both normal operation and fault conditions. Risk assessments are often required to identify and mitigate potential hazards associated with refrigerant leakage and accumulation.

• Mitigation Measures and Safety Controls
  Depending on refrigerant type and charge size, products may require one or more mitigation measures. These controls reduce the likelihood of refrigerant ignition and improve overall system safety.
• Refrigerant Charge Limitations
  Safety standards establish maximum allowable refrigerant charge sizes. Charge limits are intended to prevent refrigerant concentrations from reaching flammable levels in indoor spaces following a leak event. Manufacturers must demonstrate compliance with applicable charge restrictions through engineering analysis and product testing.

A critical component of ETL certification is simulated refrigerant leakage testing. These evaluations assess product behavior during representative leak scenarios. Leakage testing helps validate product safety and supports compliance with current HVAC/R standards. Download our fact sheet to learn more.

Certified HVAC/R equipment using flammable refrigerants must include specific markings and warning labels. Proper labeling helps ensure safe installation, operation, and servicing throughout the product lifecycle.

The adoption of flammable refrigerants has accelerated due to environmental regulations aimed at reducing greenhouse gas emissions and ozone depletion.

In the United States, the EPA's Significant New Alternatives Policy (SNAP) program has expanded the use of lower-GWP refrigerants, driving significant changes across the HVAC/R industry. Manufacturers must comply with evolving product safety standards, building codes, and regulatory requirements before equipment can enter the marketplace. Download our fact sheet to learn more.

Intertek supports HVAC/R manufacturers throughout the product lifecycle. With decades of HVAC/R testing experience and a global network of laboratories, Intertek helps manufacturers efficiently achieve compliance and market access for products utilizing flammable refrigerants.

Intertek's ETL certification services help manufacturers navigate the industry's transition to flammable refrigerants while demonstrating compliance with applicable North American safety standards and regulations. Download our fact sheet to learn more.