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If you are considering a new HVAC system or looking to improve your home's energy efficiency, you have likely come across R-454B refrigerant in your research. As of January 1, 2025, a major regulatory change now requires that all newly manufactured HVAC systems that use refrigerant must use R-454B —a move designed to reduce environmental impact and promote energy efficiency across the industry.
R-454B functions like other refrigerants by absorbing heat from the air—indoors or outdoors—and transferring it to regulate indoor temperatures. The key difference? R-454B does this more efficiently, requiring less energy to achieve the same results.
This refrigerant is replacing R-410A, which offered similar performance but had a higher global warming potential. By switching to R-454B, the HVAC industry aims to reduce greenhouse gas emissions, lower utility costs for home and business owners, and contribute to a healthier planet.
Yes. The new regulations apply only to newly manufactured systems. If your current HVAC system uses R-410A, you can still have it serviced and maintained.
However, as the industry shifts away from R-410A, its production will gradually decrease—which may lead to higher refrigerant costs over time. While there’s no need to rush a replacement, it’s a good idea to start planning ahead, especially for aging systems.
Upgrading to a new R-454B system offers several benefits:
For those already considering an upgrade, R-454B systems are a smart investment—offering both long-term savings and sustainability.
As with any industry-wide change, there may be short-term cost increases due to updated manufacturing and training processes. However, the HVAC market is built to adapt, and pricing is expected to stabilize as production ramps up and demand increases.
We have heard some concerns about flammability warnings on R-454B packaging and equipment. While it is classified as mildly flammable, it meets all required safety standards when installed and handled by trained professionals.
The key to safe use is simple: no open flames and licensed technicians should handle it. Refrigerants with flammability characteristics are not new, and R-454B has been thoroughly tested to ensure it is safe for residential and commercial use.
Unfortunately, retrofitting existing R-410A systems to use R-454B is not possible. The two refrigerants have incompatible pressure and chemical requirements. If you want to take advantage of R-454B’s benefits, a full system replacement is required.
If you have questions or want to explore your options, contact our customer service team at (978) 750-8282 or office@preferredairinc.com. We're happy to help you find the best solution for your home or business.
Preferred Air has been offering trusted service for 34 years. We'd love to have you join our community by scheduling a service or a complimentary professional system evaluation and estimate for upgrades or replacements of your current system with our factory-trained expert technicians.