Uncategorized / October 5, 2025

Are Low-GWP Refrigerants Worth the Switch? Benefits & Considerations for Homeowners

Mauzy Cooling, Heating, Plumbing, and Electrical is proud to serve homeowners across San Diego County with trusted expertise in heating, cooling, plumbing, and electrical services. As the HVAC industry continues its transition toward cleaner, more efficient technology, one question we often hear from local homeowners is:

“Are low-GWP refrigerants really worth it?”

The short answer: yes — but there are important factors to understand before making the switch.

In this post, we’ll break down what “GWP” actually means, how new refrigerants like R-32 and R-454B compare to older types, and what these changes mean for your comfort, budget, and the environment.

What Does GWP Mean?

GWP (Global Warming Potential) measures how much heat a greenhouse gas traps in the atmosphere compared to carbon dioxide (CO₂).

• R-22 (Freon): Extremely high GWP and ozone-depleting — phased out in 2020.
  
• R-410A (Puron): Better for the ozone layer but still high GWP (2,088).
  
• R-32 & R-454B: Next-generation refrigerants with 65–80% lower GWP — designed to meet new U.S. and California environmental standards.
  

In short, the lower the GWP number, the less impact a refrigerant has on the environment.

Why the Transition Is Happening

The shift to low-GWP refrigerants isn’t just a trend — it’s a federally mandated change driven by the U.S. Environmental Protection Agency (EPA) and California Air Resources Board (CARB).

These agencies aim to reduce hydrofluorocarbon (HFC) emissions by 85% by 2036, a major step toward fighting climate change. Starting in 2025, most new HVAC systems must use low-GWP refrigerants.

For San Diego homeowners, this means:

• Older refrigerants like R-410A are being phased out.
  
• Future HVAC systems will use new refrigerant types.
  
• Upgrading early can save money on energy bills and avoid future supply shortages.
  

The Leading Low-GWP Refrigerant Options

Let’s look at the two main contenders in the U.S. residential market:

R-32 (Difluoromethane)

• GWP: 675 (about 67% lower than R-410A)
  
• Efficiency: Excellent energy performance and strong cooling capacity.
  
• Compatibility: Used in new systems, not retrofit-compatible with R-410A units.
  
• Adoption: Widely used globally; proven technology.
  

R-454B (Puron Advance)

• GWP: 466 (roughly 78% lower than R-410A)
  
• Performance: Nearly identical pressure to R-410A, making it easier for manufacturers to adapt.
  
• Adoption: Becoming the standard for major brands like Carrier, Bryant, and others by 2025.
  

Both refrigerants fall under the A2L safety classification, meaning they are mildly flammable and require specific handling and installation standards — one reason it’s essential to work with certified professionals like Mauzy’s licensed HVAC technicians.

Are Low-GWP Refrigerants Safe?

Yes — when installed and maintained correctly by trained experts.

The mild flammability of A2L refrigerants can sound concerning, but these refrigerants are heavily tested and include strict safety standards, such as:

• Enhanced ventilation requirements
  
• Specialized sensors in some systems
  
• Code-compliant installation procedures
  

Mauzy’s certified professionals follow all EPA and CARB guidelines to ensure your system operates safely and efficiently.

The Benefits of Switching to Low-GWP Refrigerants

1. Lower Environmental Impact

By reducing greenhouse gas emissions, low-GWP systems directly contribute to a cleaner environment — an especially important step in eco-conscious regions like San Diego County.

2. Higher Energy Efficiency

New refrigerants operate under optimized pressure ranges that improve heat exchange. That means faster cooling with less energy, helping you save on monthly utility costs.

3. Future-Proof Technology

Upgrading now ensures your system will comply with upcoming refrigerant regulations. Older systems using R-410A may become more expensive to service as refrigerant supply decreases.

4. Improved System Longevity

Low-GWP refrigerants tend to reduce compressor strain and run at lower pressures — resulting in fewer breakdowns and longer system life.

5. Enhanced Cooling Performance

San Diego’s climate demands steady, reliable cooling for much of the year. R-32 and R-454B systems deliver faster response times and maintain comfort even during inland heatwaves.

Considerations Before Making the Switch

1. System Compatibility

Existing R-410A systems cannot be retrofitted for low-GWP refrigerants. A new system installation will be required.

2. Installation Costs

While initial costs can be slightly higher for new refrigerant systems, rebates and long-term energy savings offset that investment. Mauzy’s team can help you identify available incentives to make the upgrade more affordable.

3. Technician Expertise

Because low-GWP refrigerants require new safety and handling procedures, always work with certified HVAC professionals who are trained in A2L installation standards — like Mauzy’s technicians.

4. Regulatory Timing

In California, the new refrigerant mandate begins in January 2025. Planning ahead now helps you avoid last-minute installation delays as demand spikes.

What About Older Systems?

If your air conditioner or heat pump still uses R-410A, there’s no need to panic. You can continue using and servicing it safely for years to come. However, refrigerant costs may rise over time as supply decreases.

Mauzy recommends scheduling a system evaluation to determine whether upgrading early could save you money in the long run — especially if your system is over 10 years old.

Financial Incentives for San Diego Homeowners

California’s push toward sustainable home technology means there are numerous rebates and tax credits available for upgrading to high-efficiency, low-GWP systems.

Potential savings include:

• Federal Tax Credits: Up to $2,000 through the Inflation Reduction Act (IRA).
  
• SDG&E Incentives: Rebates for installing energy-efficient heat pumps or AC units.
  
• Manufacturer Rebates: Offered through Mauzy’s partnered brands.
  

Mauzy’s comfort specialists can help you navigate every option and maximize your return on investment.

The Mauzy Advantage: Safe, Smart, and Sustainable Installation

At Mauzy, we believe environmental responsibility should never come at the expense of comfort or peace of mind. Our technicians are certified in the latest low-GWP refrigerant technologies and adhere to all safety and regulatory standards.

When you choose Mauzy, you’re partnering with a family-owned San Diego company that has built its reputation on trust, craftsmanship, and community care.

From air conditioning installation to plumbing and electrical upgrades, Mauzy delivers comprehensive comfort solutions that keep your home efficient and eco-friendly for years to come.

Call to Action

Ready to upgrade to a cleaner, more efficient HVAC system?
Call Mauzy today for professional HVAC, plumbing, and electrical service in San Diego County.Want to learn more about low-GWP refrigerants and future-proofing your system?
Schedule your consultation with Mauzy — your trusted San Diego comfort experts.