Key Points
- There are three major refrigerants used in residential AC systems today: R-22 (Freon), R-410A (Puron), and R-32 — each with different environmental impacts, efficiency levels, and availability.
- According to the U.S. Environmental Protection Agency, R-22 production was banned in 2020 — any remaining supply is reclaimed or recycled, making it increasingly scarce and expensive to source.
- R-410A (Puron) is currently the most widely installed refrigerant in modern residential systems — chlorine-free, efficient, and far more environmentally responsible than R-22.
- R-32 is the next-generation refrigerant with one-third the Global Warming Potential (GWP) of R-410A — increasingly common in new AC models and the direction the industry is heading.
- An R-22 system cannot be converted to R-410A — a full system replacement is required, which is why most homeowners upgrade when their R-22 unit fails rather than continuing to maintain it.
- Never attempt to handle refrigerant yourself — all refrigerant work requires EPA Section 608 certification; improper handling is both illegal and dangerous.
- Contact Comfy Air Cooling & Heating for expert refrigerant assessment, AC repair, and system replacement throughout Texas.
Not all air conditioning systems are created equally. When it comes to keeping your home or business cool in the intense summer heat, the type of refrigerant your system uses matters. Many people assume there’s only one type of AC refrigerant, but that’s far from true.
There are three major refrigerants commonly used in residential systems today. Here’s a clear breakdown to help you choose the right one for your needs.
Refrigerant 1: Freon (R-22)
One of the older refrigerants you might encounter is Freon, also known as R-22. If your system uses Freon, you may recognize it by the green-labeled containers used for refilling. However, R-22 has become increasingly obsolete.
Research has shown that R-22 damages the ozone layer. Because of this, the Clean Air Act banned manufacturers from producing new R-22 in 2010 — and the EPA banned all remaining production and import in 2020. While you can still maintain an older R-22 system, the only available supply now is reclaimed, recycled, or recovered refrigerant — making it harder and more expensive to source.
R-22 also comes with health risks. If you ever see ice forming on your unit, that can signal a refrigerant leak. Freon leaks can reduce oxygen levels in the body and should always be handled by a trained HVAC professional.
What R-22 system owners need to know:
- Cost is rising fast — because supply is limited to reclaimed stock, R-22 prices have increased dramatically over the past decade and will continue to climb; a single service recharge can cost several times what it would for R-410A
- Parts availability is declining — as fewer manufacturers support R-22 systems, finding replacement components becomes progressively more difficult and expensive
- You cannot convert — R-22 systems cannot be retrofitted to run on R-410A or R-32; the compressor, coils, and other components are designed for R-22’s operating pressure and are incompatible with newer refrigerants
- When to plan for replacement — if your R-22 system is over 10 years old or requires a refrigerant recharge, the cost of continued maintenance typically exceeds the cost of a new AC installation within a few years
Refrigerant 2: Puron (R-410A)
Puron, also known as R-410A, is the standard refrigerant used in most modern AC systems. It’s more energy-efficient, chlorine-free, and significantly more environmentally friendly than R-22. Systems that run on R-410A typically offer:
- Better reliability — modern systems built around R-410A are designed with tighter manufacturing tolerances and more reliable components
- Higher efficiency — R-410A systems achieve higher SEER ratings than comparable R-22 systems, translating directly to lower monthly energy bills
- Improved indoor comfort — R-410A operates at higher pressures that allow for better heat absorption and moisture removal, improving both temperature and humidity control
If your system currently uses R-22, it cannot be converted to run on R-410A. A full system replacement is required — which is why many homeowners upgrade to a Puron-based system when their R-22 unit fails.
Important 2025 update on R-410A: New EPA regulations that took effect in 2025 restrict the use of R-410A in new residential equipment due to its relatively high Global Warming Potential. New AC systems manufactured from 2025 onward must use lower-GWP refrigerants like R-32 or R-454B. However, R-410A remains widely available for servicing existing systems — so if you already have an R-410A system, you can continue to have it serviced without concern.
Refrigerant 3: R-32 (Low Global Warming Potential Refrigerant)
R-32 is the next-generation refrigerant becoming more common in new AC models. While R-410A is far better for the ozone layer than R-22, it still has a relatively high Global Warming Potential (GWP). R-32 drastically reduces that impact.
Key benefits of R-32 include:
- One-third the GWP of R-410A — a significantly lower environmental footprint over the refrigerant’s lifetime
- High efficiency and strong performance — R-32 systems achieve excellent SEER ratings and cool effectively in Texas’s demanding heat
- Lower environmental impact — reduces greenhouse gas contribution compared to both R-22 and R-410A
The biggest thing to note: R-32 is mildly more flammable than R-410A. Even so, millions of R-32 systems are in use worldwide with an excellent safety record. AC systems designed for R-32 incorporate safety features that account for its flammability classification — making it safe for residential use when installed and serviced by a licensed HVAC technician.
Why R-32 is the direction the industry is heading: As EPA regulations continue to tighten around high-GWP refrigerants, R-32 (and similar alternatives like R-454B) are becoming the standard for new residential equipment. If you’re planning a new AC installation in the coming years, expect your new system to use R-32 or a comparable next-generation refrigerant.
Breaking Down Your Options
When choosing your next AC refrigerant, here’s the quick takeaway:
Avoid:
- R-22 — harmful to the environment, discontinued, and increasingly difficult and expensive to source; if your system uses R-22, start planning for replacement
A great standard choice:
- R-410A (Puron) — widely available for existing systems, efficient, and far more eco-friendly than R-22; new equipment using R-410A is being phased out, but existing systems will be serviceable for years
Best long-term choice:
- R-32 — high efficiency with the lowest environmental impact among common residential refrigerants; the standard for new equipment going forward
Quick comparison:
|
Refrigerant |
Ozone Impact |
GWP |
Availability |
Best For |
|
R-22 (Freon) |
High |
1,810 |
Very limited/expensive |
Older systems only |
|
R-410A (Puron) |
None |
2,088 |
Widely available |
Existing modern systems |
|
R-32 |
None |
675 |
Growing rapidly |
New installations |
Key Takeaways
Understanding AC refrigerants helps you make smarter decisions about maintenance and replacement. R-22 is banned from new production, increasingly expensive, and incompatible with modern refrigerants — if your system uses R-22 and needs a recharge, calculate whether continued maintenance makes financial sense versus a new AC installation. R-410A remains the standard for existing modern systems and will continue to be serviceable, but new EPA regulations mean new equipment from 2025 onward uses lower-GWP alternatives like R-32. Never handle refrigerant yourself — it requires EPA Section 608 certification and proper equipment. Contact Comfy Air Cooling & Heating for expert guidance on refrigerant, repairs, and system replacement throughout Texas.
Need Help Choosing the Right Refrigerant or AC System?
Navigating different refrigerants can feel overwhelming, but you don’t have to choose alone. At Comfy Air Cooling & Heating, our experts can guide you toward the best option for your home and budget. Whether you need a repair, a new installation, or help selecting an eco-friendly system, we’re here to make it easy.
Reach out to your hometown air conditioning contractor today — we’ll help keep your home cool and comfortable for years to come.
