What are they replacing Freon with?

Author: Lelah Goyette III  |  Last update: Wednesday, July 2, 2025

As Freon was phased out, new HVAC systems began using a refrigerant known as Puron® or R-410A, an HFC. More efficient and less harmful to the environment, R-410A has been in use since its introduction in 1996 and is found in most of today's modern HVAC systems.

What is the new alternative to Freon?

While we still service HVAC equipment using Freon, most residential HVAC units are now using Puron® or R-410A, a type of hydrocarbon refrigerant without the chlorine. The reason for the switch was to reduce the impact that the gasses have on the ozone layer and the environment.

Why was R-22 banned?

In 2010, the U.S. stopped the sale of newly manufactured residential air conditioning units and heat pumps that use R-22 because of its particularly harmful impact on the ozone layer when released into the air. On January 1, 2020, the U.S. Environmental Protection Agency (EPA) banned the production and import of R-22.

What is Freon gas now replaced by?

1,1,1,2-Tetrafluoroethane (R-134a or HFC-134a), one of the main replacements for the formerly widespread R-12. Opteon halogenated olefins now replacing Freons in many applications.

What is the replacement of Freon?

R-407C. Featuring thermodynamic properties similar to R-22, R-407C is a common Freon replacement. Many new AC models are engineered to work with it. However, this refrigerant has been used in commercial cooling and refrigeration equipment since the early 1990s.

Home air conditioners changing refrigerant in 2025

What is used now instead of Freon?

As Freon was phased out, new HVAC systems began using a refrigerant known as Puron® or R-410A, an HFC. More efficient and less harmful to the environment, R-410A has been in use since its introduction in 1996 and is found in most of today's modern HVAC systems.

What is the new Freon called?

R-454B is the newest refrigerant, which will gradually replace R-410A, the refrigerant used in current HVAC manufacturing. R-454B is a blend of R-32, a hydrofluorocarbon (HFC), and R-1234yf a hydrofluoroolefin (HFO).

What is the new Freon in 2024?

R-454B is the new refrigerant in 2024. By 2025, the EPA's required phaseout of R-410A will be in full effect, with production, importation, and distribution no longer allowed. HVACR businesses must be evaluating their current choices in coolant and ready to make the jump.

What gas has replaced Freon?

R-410A Refrigerant: One of the first R22 alternatives to come out after the Freon ban, R-410A was soon recalled because it, too, has serious effects on the environment. R-454B Refrigerant: This refrigerant was developed to replace R-410A once it was recalled. R-454B is best suited to commercial chillers and heat pumps.

What do modern fridges use instead of Freon?

R-32 is another refrigerant gaining popularity as a replacement for Freon. It has a lower GWP than R-410A, making it a better choice for the environment. R-32 is also highly efficient, which means it can reduce energy consumption and help lower utility costs.

What can I use instead of R-22 refrigerant?

Freon MO99 is the gold standard for R-22 alternatives and was developed by the same scientists who engineered Freon R-22. The benefits of Freon MO99 include: Capacity — The ability of Freon MO99 to heat or cool a given space is closer to Freon R-22 than any other refrigerant on the market.

How long will R-410A be available?

R-410A PHASE-DOWN TIMELINE

We will reach a 70% decrease by 2029. In 2034, we will see 80% less R-410A being produced than it is today, and the phase-down will end in 2036 with another 5% reduction.

Can you put new Freon in an old AC unit?

If you put the newer freon in right away, your unit will rupture due to the force. However, you can convert your AC unit to handle R410A. You'll need to replace the compressor, condenser, evaporator, and likely the refrigerant tubing. If you replace all of this, your old unit will work fine with the new freon.

What refrigerant will be used in 2025?

What refrigerant will replace R-410A in 2025? For whole-home systems, Lennox has chosen 2025 Compliant Refrigerant R-454B due to its excellent performance for ducted systems and zero ozone depletion potential. For mini-splits, we selected R-32, designed to optimize efficiency and reliability in ductless systems.

Will AutoZone recharge my AC?

An AC leak will lead to warmer air from your vents over time. In most cases this can be fixed with a proven stop leak additive to seal up any leaks. When it's time for an AC recharge, turn to AutoZone.

What is used in place of Freon?

R-407C is often used as a replacement for Freon. It has similar thermodynamic properties and is a popular choice for manufacturing new machines.

Can you still buy R-22?

As of January 1, 2020, production and import of R22 refrigerant will be illegal in the United States. Of course, continued use of your air conditioner (AC) or heat pump system using R22 refrigerant is allowed.

What is the new Freon called for cars?

R1234yf was chosen to replace R134a in all new cars by 2021. Some manufacturers have already made the switch, or the switch is in progress.

What refrigerant can I use to top off R-22?

Freon™ MO99 can be used to retrofit R-22 heat pumps .

Is there a new refrigerant coming out?

Air conditioner and heat pump manufacturers are rolling out new refrigerants to comply with EPA guidelines. Starting in January 2025, no new HVAC systems will use R-410A refrigerant. Instead, most residential systems will use either R-32 or R-454B refrigerant, both of which have a comparably lower environmental impact.

Should I wait until 2024 to buy a heat pump?

Should I wait until 2024 to buy a heat pump? It's not necessary to wait until 2024 to buy a heat pump. The California heat pump rebate program is currently available, offering financial incentives for homeowners who install energy-efficient heat pump systems.

Are air conditioners going to change in 2025?

The new refrigerant changes in 2025 are part of a larger effort to make air conditioning systems more environmentally friendly, while still keeping homes comfortable. These changes are being driven by regulations to phase out older refrigerants like R-410A, which have a high global warming potential (GWP).

Will R-410A be banned?

In December 2022, the EPA unveiled a refrigerant ban that will go into effect between 2025 and 2026 (depending on the industry). The result? R-410A is out, shaking up the HVACR industry, which relies heavily on this refrigerant.

Will AC units be more expensive in 2025?

Yes – universally, new air conditioners and installation will be noticeably more expensive in 2025. You will save significant dollars by buying and installing now.

What is the next generation refrigerant?

In 2021, Honeywell and Trane Technologies launched the eco-friendly next-generation refrigerant N41, an alternative to the highly flammable and toxic R-410A. N41 has the same efficiency level as R-410A, while it also reduces the global warming impact by 65 percent.

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