In the summer of 2025, homeowners may notice changes in HVAC repairs due to a nationwide shortage of a key component: refrigerant. A national shift in HVAC refrigerant standards, driven by new environmental regulations, has created an unprecedented demand for a refrigerant called R-454B, a newer and more eco-friendly alternative to older refrigerants like R-410A.
Though the legislation behind this change, called the AIM Act, was passed in 2020, supply issues are now reaching a boiling point. As a homeowner, it is important to understand how these changes could affect your HVAC repairs so you can make confident, informed decisions.
At Lowery Plumbing, Heating, and Air Conditioning, we are here to answer all your questions and help you navigate the new refrigerant shortage with confidence.
What is R-454B Refrigerant?
Before we dive into the specifics of R-454B, we need to understand what refrigerant is and why it is essential for your HVAC system.
Refrigerant is a specialized cooling liquid that makes your heating and cooling systems work. The refrigerant absorbs hot air from your home, which turns the refrigerant into a gas, then it releases the heat outside and turns back into liquid. To heat your home, it does the same thing in reverse, taking hot air from outside (even cold air has heat) and depositing it in your home.
R-454B is a low GWP (global warming potential) refrigerant. Older refrigerants, like R-22 and R-410A, have a high level of hydrofluorocarbons (HFCs), which are potent greenhouse gases. R-454B offers a more sustainable solution with reduced environmental impact, and it’s now becoming the industry standard.
Why is There an R-454B Supply Crisis?
As of January 1, 2025, HVAC contractors are required to phase out the use of high GWP refrigerants, leading to the increased use of R-454B. This change stems from the American Innovation and Manufacturing (AIM) Act of 2020, which directs the Environmental Protection Agency (EPA) to phase down the use of high global warming potential (GWP) refrigerants like R-410A.
While the AIM Act was passed in 2020, the actual phase-down mandate did not come into effect until recently, creating a surge in demand for R-454B just as the supply chain is still recovering from pandemic-era disruptions. On top of this, R-454B requires special storage cylinders due to its mildly flammable classification, which adds another layer of strain to production and distribution. As a result, you have a perfect recipe for a refrigerant shortage.
What Can HVAC Customers Expect During a Refrigerant Shortage?
Through the summer of 2025, those needing HVAC repairs should prepare themselves for the possibility of higher prices, long delays, or limited availability of compatible replacement parts. Now more than ever, it is important to request quotes from multiple HVAC contractors, ask about refrigerant availability before scheduling repairs, and work with a contractor who has proactively prepared for this supply chain shift.
Luckily, you don’t have to look far. At Lowery Plumbing, Heating, and Air Conditioning, our leadership team had the foresight to prepare for the supply chain disruptions. This means no surprises for our customers and no disruptions to the services you rely on.
Keep Your HVAC Stable with Lowery Plumbing, Heating, and Air Conditioning
If your newer AC system needs repair, or your older one needs replacing, don’t wait. Acting early ensures your comfort, protects your wallet, and helps avoid delays during the hottest months of the year.
Contact us today to schedule your service or request a free quote. Our team is here to keep your home cool, comfortable, and efficient, despite what happens with the supply chain.