Introduction: Why R-32 Is Changing the Game for Through-the-Wall ACs
Hey everyone, Mark Callahan here. When it comes to upgrading or installing a new through-the-wall air conditioner, one of the most important—and sometimes overlooked—decisions is the type of refrigerant inside your unit.
For years, the HVAC industry has relied heavily on refrigerants like R-410A, but the tides are turning. Today, R-32 refrigerant is rapidly gaining ground and becoming the preferred choice in modern AC systems, including through-the-wall units.
If you’re wondering why R-32 is better, safer, and more efficient, you’re in the right place. In this detailed guide, I’ll break down the science, environmental benefits, performance advantages, and practical considerations that make R-32 the refrigerant of the future.
And remember, if you’re ready to shop for R-32 through-the-wall air conditioners, our full selection is available right here: Through-the-Wall Air Conditioners.
What is R-32 Refrigerant? A Quick Overview
First, let’s cover the basics. Refrigerants are the fluids that absorb and release heat inside an air conditioning system, enabling it to cool your home. R-32, chemically known as difluoromethane, is a single-component hydrofluorocarbon (HFC) refrigerant.
Unlike its predecessor R-410A, which is a blend of two different refrigerants, R-32 is purer and simpler in composition. This difference gives it a number of performance and environmental advantages.
🌍 Environmental Advantages: Why R-32 Is a Green Choice
One of the biggest reasons R-32 has surged in popularity is its significantly lower global warming potential (GWP) compared to older refrigerants.
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R-410A has a GWP of about 2,088,
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while R-32’s GWP is approximately 675 — that’s roughly one-third the warming impact.
This reduction is huge when it comes to mitigating climate change. Because refrigerants can leak during manufacturing, installation, or servicing, switching to lower-GWP options like R-32 helps reduce the overall environmental footprint of air conditioning systems.
The U.S. Environmental Protection Agency (EPA) has listed R-32 as a viable alternative under their Significant New Alternatives Policy (SNAP), encouraging manufacturers and contractors to adopt more climate-friendly refrigerants.
Additionally, R-32 has zero ozone depletion potential (ODP), so it doesn’t harm the ozone layer — a vital shield protecting us from harmful UV rays.
⚡ Energy Efficiency: How R-32 Saves You Money on Cooling
Beyond environmental benefits, R-32 also delivers better energy efficiency compared to R-410A and many other refrigerants. That means your through-the-wall AC can cool your room effectively while using less electricity.
Here’s why:
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R-32 has a higher volumetric cooling capacity, meaning it absorbs and transfers heat more effectively per unit volume.
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It operates at a slightly lower pressure, which reduces strain on the compressor and other system components.
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These factors translate to improved Seasonal Energy Efficiency Ratio (SEER) ratings on R-32 systems.
Some manufacturers report that R-32-based units can improve energy efficiency by up to 10% compared to R-410A systems of the same size and design.
The Department of Energy’s guide to energy-efficient air conditioners (Energy.gov) highlights how improved refrigerants contribute to long-term savings on your power bill while helping the grid handle peak summer demand.
🔧 Safety and Handling: What You Need to Know About R-32
While R-32 offers big environmental and efficiency wins, it’s also important to understand its safety profile.
R-32 is classified as an A2L refrigerant, which means it is mildly flammable under certain conditions. This is a departure from non-flammable refrigerants like R-410A.
But don’t let the word “flammable” scare you off. The A2L classification indicates a low flammability risk when handled and installed correctly. The industry has developed strict safety protocols and installation standards to ensure safe use.
Licensed HVAC technicians receive special training on handling R-32 systems, and manufacturers design units to meet these safety guidelines. Plus, R-32’s mild flammability allows it to operate at lower charge volumes, which reduces overall risk.
For detailed technical safety information, check out the latest standards and guidance from the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) here: ASHRAE Refrigerant Safety Standards.
🏡 Why R-32 Makes Perfect Sense in Through-the-Wall Units
Now let’s talk about why R-32 is especially well-suited for through-the-wall air conditioners:
1. Efficient Cooling for Compact Spaces
Through-the-wall units are designed to cool single rooms or small areas efficiently. R-32’s high cooling capacity per unit volume allows manufacturers to use smaller refrigerant charges without compromising performance — a great fit for compact through-the-wall designs.
2. Easier Maintenance & Service
Because R-32 is a pure compound (not a blend like R-410A), it’s simpler to recover and recycle during service calls. This makes maintenance easier and more environmentally friendly, which benefits homeowners in the long run.
3. Compatibility with Advanced Technologies
R-32’s properties enable the integration of newer features such as inverter-driven compressors and variable-speed fans that improve comfort and efficiency. Many modern through-the-wall ACs use these technologies to offer quieter operation and precise temperature control.
💰 Cost Considerations: Is R-32 More Expensive?
One common question I get is, “Does choosing R-32 increase the upfront cost?”
While R-32 units used to be priced slightly higher than older R-410A models, the gap is closing rapidly. As manufacturers scale up production and regulations favor low-GWP refrigerants, prices are becoming competitive.
More importantly, the energy savings over time and potential rebates in some states make R-32 systems a smart financial choice.
For example, some utility companies and state programs provide rebates or incentives for installing high-efficiency, low-GWP AC systems. Check resources like the Database of State Incentives for Renewables & Efficiency (DSIRE) to see what might be available in your area.
🌟 Choosing the Right R-32 Through-the-Wall AC Unit
If you’re convinced R-32 is the way to go, here’s what to look for when shopping:
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Check the specs: Confirm that the unit uses R-32 refrigerant — this should be clearly listed.
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Look for ENERGY STAR® certification: These units meet higher efficiency standards and often use R-32.
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Consider SEER and EER ratings: Higher ratings mean better efficiency.
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Think about BTU size: Match the unit to your room’s size for optimal performance.
At The Furnace Outlet, we offer a variety of R-32 through-the-wall AC units designed for different needs and budgets. Browse the current selection here: Through-the-Wall Air Conditioners.
🔄 Transitioning Away from Older Refrigerants: Industry Trends
The HVAC industry is moving away from high-GWP refrigerants due to global environmental agreements and regulations. The Kigali Amendment to the Montreal Protocol mandates phasedown of hydrofluorocarbons (HFCs) like R-410A worldwide. R-32 is recognized as a leading solution to meet these goals.
Many major manufacturers have already transitioned their new units to R-32 or similar low-GWP refrigerants, with through-the-wall units among them.
This shift means that buying an R-32 system today helps future-proof your home’s cooling setup, ensuring it stays compliant and efficient for years.
Final Thoughts: R-32 Is the Clear Choice for Modern Cooling
To sum it up, switching to an R-32 refrigerant through-the-wall air conditioner offers:
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Lower environmental impact with a much smaller carbon footprint
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Increased energy efficiency and reduced electricity costs
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Compatibility with modern HVAC technology for better comfort
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Safer, easier maintenance with proper handling protocols
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Compliance with evolving regulations and future readiness
If you want to enjoy cool, comfortable air without compromising the planet or your wallet, R-32 is a no-brainer.
Ready to upgrade? Check out our carefully selected lineup of R-32 through-the-wall units at The Furnace Outlet’s Through-the-Wall Air Conditioners.
If you have any questions about R-32 or through-the-wall ACs, drop me a line. I’m Mark Callahan, and I’m here to help you make the smartest cooling decisions for your home.
Stay cool! ❄️
