When it comes to choosing a PTAC (Packaged Terminal Air Conditioner) unit for your home, office, or rental property, one question is increasingly on every savvy shopper’s mind: What refrigerant does it use? And in 2025, the clear frontrunner in refrigerant technology is R-32.
In this article, I’m going to break down exactly why R-32 is rapidly becoming the preferred refrigerant for PTAC units—and why it might just be the right choice for your next system. From energy efficiency and environmental impact to safety and costs, I’ll give you a clear, practical guide to understanding R-32 and how it compares to older refrigerants like R-410A and R-22.
What is R-32 Refrigerant?
R-32 is a single-component refrigerant used in air conditioning and heat pump systems. It belongs to the family of hydrofluorocarbon (HFC) refrigerants, designed to be more environmentally friendly than older refrigerants.
Unlike R-410A, which is a blend of two refrigerants (R-32 and R-125), R-32 contains only one chemical compound. This simplification means it has several advantages in terms of energy efficiency and environmental impact.
Why Is R-32 Considered the Future of Refrigerants?
1. Lower Global Warming Potential (GWP)
One of the biggest reasons R-32 is gaining traction is its lower Global Warming Potential. GWP is a measure of how much heat a greenhouse gas traps in the atmosphere compared to carbon dioxide.
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R-32’s GWP is about 675
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R-410A’s GWP is approximately 2088
This means R-32 has roughly one-third the climate impact of R-410A refrigerant, making it a much greener choice. As governments and environmental agencies push for lower emissions, the HVAC industry is rapidly adopting refrigerants with lower GWP values—and R-32 is front and center.
2. Higher Energy Efficiency
R-32 systems can operate more efficiently than those using older refrigerants. Because it’s a single-component refrigerant, it allows for better heat transfer, which translates into improved performance.
The result? Systems using R-32 often have higher SEER (Seasonal Energy Efficiency Ratio) ratings and lower electricity bills for homeowners and businesses.
3. Lower Refrigerant Charge Requirements
PTAC units using R-32 generally require less refrigerant by weight compared to R-410A systems. This reduction means less refrigerant is needed to cool the same space, which reduces both environmental impact and cost.
How Does R-32 Compare to Older Refrigerants Like R-22 and R-410A?
If you’re upgrading from an older PTAC or central system, you’re probably familiar with R-22 (often called Freon) or R-410A. Here’s how R-32 stacks up:
| Feature | R-22 | R-410A | R-32 |
|---|---|---|---|
| Phase-out Status | Being phased out globally due to ozone depletion | Being phased down due to GWP concerns | Growing in use; future-proof refrigerant |
| Ozone Depletion Potential (ODP) | 0.05 (damages ozone) | 0 (no ozone damage) | 0 (no ozone damage) |
| Global Warming Potential (GWP) | 1810 | 2088 | 675 |
| Energy Efficiency | Lower efficiency | Moderate to good | Higher efficiency |
| Refrigerant Charge | Higher volume needed | Moderate volume | Lower volume |
| Safety (flammability) | Non-flammable | Non-flammable | Mildly flammable (classified A2L) |
| Availability and Cost | Phasing out; expensive and limited | Widely available, but declining | Increasingly common; competitive pricing |
Is R-32 Safe for My PTAC Unit?
Safety is a common concern when it comes to refrigerants, especially since R-32 is classified as A2L, which means it is mildly flammable. But here’s the important part:
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R-32’s flammability risk is very low under normal operating conditions in a properly designed and installed PTAC unit.
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Many manufacturers have developed systems specifically engineered for R-32, including safety features that prevent leaks or ignition risks.
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R-32 has been used successfully in millions of systems worldwide for years, particularly in Asia and Europe.
As with any HVAC equipment, it’s essential to have your PTAC installed and serviced by trained professionals who understand the nuances of R-32 systems.
What Does R-32 Mean for Your Utility Bills?
Because R-32 improves the efficiency of PTAC units, many homeowners see lower energy consumption compared to older models with R-410A or R-22. This efficiency means:
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Lower monthly electricity bills during cooling and heating seasons
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Reduced carbon footprint without sacrificing comfort
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Potential eligibility for rebates or incentives aimed at energy-efficient systems
Savings vary based on your climate, usage, and electricity rates, but in general, R-32 units provide a more cost-effective operation over the life of the system.
Will R-32 PTAC Units Qualify for Rebates and Incentives in 2025?
Great news—yes! Many utility companies and government programs now offer rebates and incentives for upgrading to R-32 HVAC systems because of their superior environmental profile.
Be sure to:
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Check local utility programs for rebates on energy-efficient PTAC units
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Look for federal or state incentives for equipment using low-GWP refrigerants
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Work with your HVAC dealer to ensure your system qualifies and you submit paperwork on time
These rebates can significantly reduce the upfront cost of your new PTAC system, making the switch to R-32 even more affordable.
What to Expect When Buying an R-32 PTAC Unit
If you’re ready to invest in an R-32 PTAC unit, here’s what you should keep in mind:
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Compatibility: R-32 units are designed with components optimized for this refrigerant; don’t attempt to retrofit an old unit with R-32.
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Installation: Must be performed by certified technicians trained in handling A2L refrigerants.
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Maintenance: R-32 systems require routine maintenance similar to other PTAC units but may involve different refrigerant handling procedures.
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Warranty: Always check your manufacturer’s warranty for coverage related to refrigerant and compressor components.
Common Myths About R-32 — Busted
Myth 1: R-32 Is Dangerous Because It’s Flammable
Truth: It’s mildly flammable under specific test conditions, but when used in modern HVAC equipment and handled by professionals, it is extremely safe.
Myth 2: R-32 Is More Expensive
Truth: Initial equipment cost is often comparable or only slightly higher than older refrigerant units. Lower energy costs and rebates offset upfront expenses.
Myth 3: R-32 Systems Are Hard to Service
Truth: Technicians certified on R-32 systems are becoming more common, and manufacturers provide training and support.
How to Choose the Right R-32 PTAC for Your Needs
Beyond refrigerant choice, focus on these critical factors:
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Cooling and heating capacity (BTUs) appropriate for your space
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Energy efficiency ratings (look for high SEER and HSPF numbers)
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Heat options: electric, heat pump, or hydronic coils
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Smart controls and programmable thermostats for convenience and savings
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Reputable brands with strong warranties and local support
When shopping, use resources like The Furnace Outlet’s product pages and customer service to get expert advice.
Final Thoughts
Choosing R-32 refrigerant for your next PTAC unit is a smart, future-focused decision. You’re investing in:
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A system with a significantly lower environmental impact
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Improved energy efficiency and lower operating costs
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Compliance with current and upcoming regulations
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Potential rebate and incentive programs
If you want to stay comfortable while supporting a cleaner planet and saving money over time, R-32 PTAC units are absolutely worth considering in 2025.
Ready to find your perfect R-32 PTAC unit?
Visit The Furnace Outlet’s R-32 PTAC Collection to explore models and talk to experts who can guide you every step of the way.
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