In Goodlettsville, TN, we know how crucial a dependable air conditioning system is. Whether you’re heading home after a long day or trying to keep a business comfortable for customers, the last thing anyone wants is an AC system that can’t keep up. With humidity levels that can make even mild days feel sticky, having a reliable AC isn’t just about comfort—it’s about quality of life.
But now, many homeowners and property managers face a growing concern: the R-454B refrigerant shortage. This new refrigerant, introduced as a more environmentally friendly replacement for R-410A, is now facing supply constraints across the country. That’s left many wondering—should you repair your current AC or consider replacing it altogether?
This blog will help you understand the shortage, weigh your options, and determine the best path forward with the help of trusted local professionals like Lanham Mechanical Contractors.
What Is R-454B and Why Is It Important?
R-454B is a low-global warming potential (GWP) refrigerant developed as a replacement for R-410A, the widely used refrigerant in residential and light commercial HVAC systems for nearly two decades. With the HVAC industry moving toward greener practices, R-454B has quickly become the industry standard for new systems beginning in 2025.
Key facts about R-454B:
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It has a GWP of 466, which is roughly 78% lower than R-410A.
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It meets the requirements set forth by the EPA’s AIM Act and international environmental agreements.
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It’s considered a mildly flammable A2L refrigerant, which means it’s safe for residential systems when handled correctly.
But as manufacturers transition to systems that use R-454B, demand has skyrocketed—and unfortunately, supply chains haven’t been able to keep up.
Understanding the R-454B Refrigerant Shortage
The shift to R-454B was supposed to be smooth. However, like many transitions in the HVAC industry, it’s been met with unexpected delays:
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Supply chain disruptions stemming from global manufacturing issues have slowed down production.
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Increased demand from equipment manufacturers and installers has placed additional pressure on distributors.
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Limited stockpiling of R-454B due to storage regulations and safety protocols has made it hard to catch up on inventory.
According to industry sources, wholesalers and HVAC contractors across the U.S. are reporting significant delays in getting both the refrigerant and compatible parts. In Goodlettsville and surrounding Tennessee areas, it’s already impacting homeowners and property managers looking for fast repairs.
Repair or Replace: Weighing Your Options
Now comes the real question: if your AC system is struggling, should you repair it or replace it—especially during an R-454B shortage? Let’s break it down.
When to Consider Repairing Your AC
If your system is newer or hasn’t had many problems, repairing might still be a smart option. Here’s when repairs make sense:
1. Your System Uses R-410A and Is Under 10 Years Old
Most systems still in operation today use R-410A. If your system is in good shape, it may be more cost-effective to keep it running until a full replacement is absolutely necessary.
2. The Repair Is Minor and Doesn’t Involve Refrigerant Replacement
If you’re dealing with a blower motor issue, clogged drain line, or thermostat malfunction, R-454B won’t be a factor. These types of repairs are more straightforward and affordable.
3. You’re Not Ready for a Big Investment
Not every household or business is prepared to replace a major system. Repairing the existing unit may help you buy some time while planning financially for a future upgrade.
When It Might Be Time to Replace Your AC
There are times when repairs just don’t make long-term sense. With the R-454B shortage looming, it’s smart to consider replacing your system if any of the following apply:
1. Your AC is Over 10–15 Years Old
The typical lifespan of an AC system is around 12–15 years. Once it crosses that threshold, it becomes less efficient, more prone to breakdowns, and more expensive to maintain.
2. Your Current System Uses Obsolete Refrigerant
Some older systems still use R-22 (phased out in 2020). Others use R-410A, which is also being phased down. If your unit requires refrigerant and that refrigerant is difficult to source or expensive, replacement may be more practical.
3. You’ve Had Frequent Repairs
If your technician is becoming a regular visitor, those repeated repair costs can quickly add up. A new system might have a higher upfront cost, but it saves money in energy and maintenance long-term.
4. You Want Improved Energy Efficiency
New systems—especially those using R-454B—are designed to meet updated efficiency standards. In fact, systems installed in 2025 and beyond must comply with SEER2 (Seasonal Energy Efficiency Ratio 2) standards, which offer more accurate measurements of energy usage.
What to Expect with a New R-454B AC System
If you decide to go the replacement route, here’s what to know:
Modern Compatibility
New units designed for R-454B come fully equipped to handle the refrigerant’s properties, including the need for updated safety features due to its A2L classification.
Environmental Benefits
You’ll be doing your part to reduce environmental impact by switching to a refrigerant with a much lower GWP than legacy systems.
Long-Term Support
Although there’s a current shortage, manufacturers and suppliers are investing in production and logistics to stabilize inventory in the coming years. Early adopters of R-454B systems will likely be in a good position as supply normalizes.
Can You Retrofit Your Current AC to Use R-454B?
In short: no, not easily or safely.
R-454B is not a “drop-in” refrigerant for R-410A systems. The oil type, pressures, and system components differ, which means attempting to retrofit can result in:
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Reduced performance
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Compressor damage
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Voided manufacturer warranties
Because of this, professionals strongly recommend replacing the entire system rather than attempting a retrofit.
What About Safety Concerns with R-454B?
Because R-454B is an A2L refrigerant (mildly flammable), manufacturers and technicians must follow specific guidelines for safe handling and installation. That said, when installed by qualified professionals like those at Lanham Mechanical Contractors, R-454B systems are completely safe for home and business use.
The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) has established strict guidelines for A2L refrigerants, and these are reflected in local and national codes.
How Lanham Mechanical Contractors Can Help
Lanham Mechanical Contractors has been serving Goodlettsville, TN, for years with trusted, reliable HVAC services. Our technicians are trained and certified to handle both traditional refrigerants and the newest refrigerants like R-454B.
When you work with us, you get:
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Honest assessments on whether repair or replacement is the best option
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Access to up-to-date equipment and refrigerants
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Expert installation that complies with all codes and safety standards
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Ongoing maintenance to keep your AC running efficiently year-round
Practical Advice for Homeowners Facing the R-454B Shortage
Still unsure what to do? Here are a few tips to help guide your next steps:
1. Schedule a Professional Inspection
A licensed HVAC technician can determine the health of your current system and give you honest input on whether a repair will hold up or if replacement is more cost-effective.
2. Don’t Wait Until the System Fails
Planning ahead—especially before peak usage periods—gives you more options and better availability of products and technicians.
3. Talk Through Financing Options
Replacing an HVAC system is a big decision, but there are financing options available to make it more manageable. Lanham Mechanical Contractors can help walk you through those.
4. Stay Informed on Industry Trends
The refrigerant landscape is evolving. Ask your contractor to keep you updated on future refrigerant developments and equipment changes.
For AC Services in Goodlettsville, TN, Contact Lanham Mechanical Contractors Today
The R-454B refrigerant shortage may be causing uncertainty, but with the right team on your side, you can make confident, informed decisions about your home comfort. Whether you’re considering a repair or exploring a full system replacement, Lanham Mechanical Contractors is here to help.
Our local team understands the unique needs of homeowners and businesses in Goodlettsville, and we’re committed to delivering high-quality, dependable HVAC solutions that last.
Contact Lanham Mechanical Contractors today to schedule your consultation and take the next step toward cooling confidence—no matter what the future holds.
