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  1. What Is an A2L Refrigerant? Everything You Need to Know in 2025

    Jun 2, 2025 · But what exactly is an A2L refrigerant, and why does it matter for your home HVAC setup? This guide explains what A2L means, how it compares to older refrigerants, what safety precautions …

  2. What You Should Know For The Transition To A2L Refrigerants

    Oct 18, 2024 · In 2025, the A2L standard for HVAC refrigerants mandates a Global Warming Potential (GWP) of under 700. The low GWP of A2L refrigerants can increase system efficiency and lower …

  3. A2L refrigerant regulation updates: what you need to know today

    Jan 21, 2025 · What does the A2L refrigerant classification mean? A2L is a class of refrigerants defined by ASHRAE 34 as having lower toxicity and lower flammability (often referred to as mildly flammable).

  4. What is A2L Refrigerant? - 2025 HVAC Regulations

    A2L refrigerants are a class of refrigerants that are mildly flammable, have low toxicity, and have a low global warming potential. A2L is an ASHRAE safety classification. The “A” stands for non-toxic, “2” …

  5. EPA’s Technology Transitions Program Related to A2L Refrigerants (Q4 ...

    Nov 13, 2025 · EPA’s Technology Transitions Program Related to A2L Refrigerants (Q4 2025 Update) Our experts address persisting questions within the HVAC industry and building code enforcement …

  6. Understanding A2L Refrigerants & Regulations | Opteon™

    What are A2L refrigerants? Named for their ASHRAE safety classification, A2L refrigerants are characterized by mild flammability, low toxicity, and low global warming potential (GWP). They …

  7. What to Know About A2L Refrigerants, From Regulatory Expert Allison ...

    The HVAC industry’s switch to A2L refrigerants on January 1, 2025, will be here before we know it. Here Allison Skidd, Director of Global Regulatory Affairs, explains what to know about A2L refrigerants …

  8. The Transition to A2L Refrigerants: What You Need to Know

    Jun 19, 2024 · Both R-454B and R-32 are A2L refrigerants, which are slightly flammable but non-toxic. By comparison, R-410A is an A1 refrigerant, which is non-flammable and non-toxic.

  9. The A2L Transition in Refrigerants: What to Know, How to Prepare

    Mar 25, 2025 · For the past several years, the HVAC industry headed into air conditioning season aware of the transition to A2L refrigerant technology. Some planning also got underway across the industry, …

  10. What Are A2L Refrigerants? Your Guide to the 2026 Refrigeration Switch.

    Aug 5, 2025 · At Thermo-Kool, we’ve selected R454A as our standard A2L refrigerant. It checks all the boxes: energy-efficient, reliable, and ready for commercial applications like walk-in coolers and …