The AIM Act is a Federal nationwide rule phasing out the use of global warming materials. As part of that effort, EPA is now banning the use of 134a in aerosol products as of 1/1/2025. There are excepted products that are allowed to use 134a until 1/1/2028.
In the United States, vehicles produced after 2021 no longer contain R-134A in the air conditioning system. In other parts of the world, including the United States, there are restrictions around using 1,1,1,2-tetrafluoroethane. Specifically, in California, retailers can deny selling customers canned R-134a.
The commonly used synthetic refrigerants such as R134a, R407C and R410A have a GWP value higher than 2,500. As a result, their production is being phased out.
A High-Performing Alternative to R-134a
Opteon™ XL10 (R-1234yf) refrigerant is a non-ozone depleting (ODP) hydrofluoroolefin (HFO) option that meets the industry's growing demands for sustainable, safe, and effective solutions.
The sales restriction is established by EPA regulations (40 CFR Part 82, Subpart F ) under Section 608 of the Clean Air Act. Only EPA-certified technicians are allowed to purchase ozone-depleting substances (ODS) or non-ozone depleting substitutes used as refrigerants, with limited exceptions.
R513A was developed as a replacement refrigerant for R134a. R513A is a modern, non-flammable refrigerant designed to replace R134a in a wide range of applications. It provides a sustainable solution for both new systems and retrofits.
While R-1234yf could be the perfect replacement for R-134a, there is one major challenge with this new technology. The R-1234yf is much more reactive than R-134a. On the positive side, this higher reactivity is why R-1234yf is so much more friendly to the environment.
Still, the answer is an emphatic, “No.” Not only would a retrofit of this type negate the environmental benefits of R-1234yf, but it would also be a violation of Federal Law under Section 203 of the Clean Air Act: “tampering” with a vehicle's emissions control device.
According to its manufacturer, Chemours, use of R-1234yf has grown so much since the refrigerant replaced the long-established R-134a that it's now used in 95% of new cars sold in the U.S. An estimated 220 million cars on global roads are also using it.
A. As of January 1, 2011, no person shall sell, supply, offer for sale or manufacture for sale in the State of California R-134a automotive refrigerant in a small container unless it has been certified for use and sale by CARB.
134a is banned for new LD vehicles in the U.S. as of October 2024. 134a production is being reduced by EPA [Environment Protection Agency] mandate for all HFCs in the U.S. 1234yf could possibly be caught up in PFAS bans in Europe and U.S. unless exemptions are made.
R134a has been found to have a lot of greenhouse gas potential, as it can end up in the atmosphere and take forever to break down. For that reason, all new vehicles sold in America after the year 2021 can no longer use this type of refrigerant.
To protect the ozone layer and slow climate change, the EPA is phasing out all production of R-22 and other ozone-depleting substances — like HCFCs, CFCs, and Halons.
While some existing systems can still use R134a, many newer HVAC units are switching to eco-friendly refrigerants. Cars manufactured after 2021 in the United States can no longer use R134a and an alternative must be used. Due to R134a's high GWP, it's unsuitable for new equipment in the long run.
Freon has been banned in the U.S. since 2020, but some homes still use Freon-based AC units. Here's what the ban means for these homeowners. The air conditioning refrigerant Freon has been banned in the U.S. since January 2020, prompting major changes in the heating, ventilation, and air conditioning (HVAC) industry.
R-410A is a refrigerant that is classified as a greenhouse gas with a high global warming potential and a negative impact on the climate. It is being phased out for a more environmentally friendly solution for HVAC systems.
R-1234yf refrigerant. To date, most auto manufacturers are using the hydro fluoro olefin (HFO) refrigerant R-1234yf as the replacement of choice for R134a.
Some notable substitutes for R134a [10] in AAC based on the preceding studies are R1234yf [[11], [12], [13], [14]], R1234z (E) [[15], [16], [17]], R152a [[18], [19], [20]], R290 [21,22], R744 [[23], [24], [25]], R430A [26,27], and R444A [28], etc.
By 2024, ban on R134a refrigerants in chillers is confirmed. United States. Some refrigerants, including R134a, R410A and R407C, will be banned for use in new chillers in the United States as of January 1, 2024.
The Agency cites the use of TCE in some R-134a production as an unreasonable risk to human health. In October 2023, the Environmental Protection Agency (EPA) proposed to ban the manufacture (including import), processing, and distribution in commerce of trichloroethylene (TCE) for all uses.
Most cars hold between 28 and 32 ounces of refrigerant (or about 2—3 12oz cans), however larger vehicles and those with rear A/C will likely hold more. Check your vehicle manual for the system capacity for your specific vehicle.
Most vehicles have a label or sticker under the hood that indicate whether the refrigerant used is R-134a or R-1234yf.
R-1234yf systems that control freeze protection by pressure may encounter loss of cooling performance if charged with 100% R-134a. This is due to the requirement of R-134a to have a lower setting of 3.3 psig to achieve freeze protection at 32 F. This may result in a 4-degree F.
Switching to R1234yf refrigerant is a step towards a greener future, but it comes with higher costs due to advanced equipment, stringent regulations, and specialized training.
The results also shows that the compressor working with R134a performed better than that working with R1234yf when operating under high condensing and low evaporating temperatures. However when the condensing temperature gets lower, R1234yf outperformed R134a.