As the HVAC industry embraces more sustainable practices, one of the biggest transitions underway is the phase-out of R-410A refrigerant. With environmental regulations tightening and manufacturers racing to offer next-generation solutions, homeowners are left wondering: What comes next?
At MRCOOL DIY Direct, we’re not just watching these changes—we’re leading the way. Here's what the refrigerant shift means for you, why R-454B is the future, and how our next-gen products are already aligned with what’s ahead.
🌍 Why Is R-410A Being Phased Out?
R-410A replaced R-22 years ago due to its zero ozone depletion potential, but it still has a very high Global Warming Potential (GWP) of 2088. As part of global climate agreements like the Kigali Amendment to the Montreal Protocol, the HVAC industry is now required to transition to refrigerants with lower GWP to reduce environmental impact.
🔄 What’s Replacing R-410A?
Two main contenders emerged to replace R-410A:
🔹 R-32
GWP: 675
Single-component refrigerant
Already used in some global markets
Slightly more efficient than R-410A
🔹 R-454B
GWP: 466 (significantly lower than R-32)
Mildly flammable (A2L), like R-32
A blend refrigerant, but more stable and environmentally friendly
✅ Why MRCOOL Chose R-454B
While some manufacturers are transitioning to R-32, MRCOOL is taking the longer view. We’ve committed to R-454B because it offers the best combination of:
Lower GWP (greener for the planet)
Excellent performance and efficiency
Regulatory alignment in North America and beyond
Future-ready system design for the next decade
All of MRCOOL’s newest 5th Generation systems—including the DIY, EZPRO, and Advantage Series—use R-454B.
📊 Quick Comparison Chart
| Refrigerant | GWP | Type | Flammability | Used by MRCOOL? |
|---|---|---|---|---|
| R-410A | 2088 | Blend | A1 (non-flammable) | Being phased out |
| R-32 | 675 | Single | A2L (mildly flammable) | ❌ No |
| R-454B | 466 | Blend | A2L (mildly flammable) | ✅ Yes |
🏠 What About Your Existing R-410A System?
Don’t worry—if you already own a MRCOOL system using R-410A, you’re not out of luck.
R-410A will still be available for servicing and repairs for years to come
Your system is not obsolete, and no immediate upgrade is required
However, expect R-410A prices to rise as production slows
New refrigerants like R-454B are not drop-in replacements—you’ll need a new system when you’re ready to switch
⚙️ How Does R-454B Affect DIY Installation?
MRCOOL’s 5th Gen systems are designed with R-454B compatibility built-in, while still maintaining our signature DIY-friendly installation process.
Pre-charged Quick Connect line sets remain easy to use
No special tools or handling required
We’ve engineered every system to ensure that even with new refrigerant specs, homeowners can still install confidently and safely
🌿 Why This Transition Is Good for You
Switching to a low-GWP refrigerant like R-454B is more than a regulatory change—it’s an opportunity to:
Lower your carbon footprint
Improve system efficiency and performance
Future-proof your home with compliant equipment
Avoid rising costs of phased-out refrigerants like R-410A
🧭 Final Thoughts
The shift away from R-410A is a major milestone for the HVAC industry. And while many brands are still debating their path forward, MRCOOL has made the decision: R-454B is the smarter, cleaner, more sustainable future.
With our 5th Gen DIY, EZPRO, and Advantage systems, you’re not just getting cutting-edge technology—you’re investing in a system that’s already built for the next era of HVAC.
👉 Ready to upgrade? Explore our newest R-454B systems or contact our team for expert guidance today.
