What do new AC units use instead of Freon?

Author: Ramon Rice  |  Last update: Tuesday, June 9, 2026

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.

What replaced Freon in air conditioners?

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 AC system without Freon?

In 2010, the EPA passed the Clean Air Act, outlawing its use in new devices. As such, new AC systems generally use one of the following types of refrigerants: R-410 (Puron): Most air conditioners produced between 1996 (when scientists invented it) and 2020 use Puron.

Do newer AC units still use Freon?

Freon is no longer used in new AC units.

Can I still get R-22 for my air conditioner?

Yes, production of R22 was banned years ago. But existing stocks of R22 are available and can still be legally sold and used. Some hvac companies recover R22 from old systems they're replacing and save it to use in other units.

Homemade air conditioner that will freeze even penguins!

What is the best replacement for R-22 refrigerant?

Freon MO99 is the closest capacity match to R-22 compared with most other no-oil change refrigerants. What does this mean to my residents? Choosing an energy-efficient blend with a mass flow rate within 10 to 15% of R-22 helps reduce energy costs and shorten the system's downtime.

How much does it cost to convert R-22 to R-410A?

How much will an R-22 to R-410A conversion cost? The actual cost will depend on many things, including where you live, but most of the time R-22 conversions start at around $2,000 and go up from there. The higher end of that range is somewhere around $4,500 to $4,600.

What is the new AC Freon called?

R-454b Will Be the New (New) Refrigerant Starting January 1st, 2023. In 2010 when I started my venture into the HVAC industry, I was coming in during a time of transition. Our industry was changing from systems that had R-22 refrigerant circulating through their lines to R-410a.

What is the difference between old and new AC units?

The refrigerant that new AC units use works better and are less likely to damage our atmosphere. On top of this major change, modern AC units are generally built to be more energy efficient than their older counterparts. This saves you money on energy bills and keeps CO2 out of the air.

How much does it cost to refill Freon in AC unit?

As mentioned earlier, Freon costs about $125 – $150 per pound. Most homeowners will pay in the range of $200 to $400 for a refill, depending on the type and size of their HVAC unit.

Can an AC unit lose Freon without a leak?

Refrigerant is a working chemical that runs through your car's A/C system in either a gaseous or liquid form. Causes of refrigerant leaks in your vehicle include physical damage, wear and tear over time, and escaping refrigerant even without a leak.

Is there a drop-in replacement for R-410A?

ComStar's RS-53 (R470A) is the world's only drop-in retrofit replacement for existing R410a systems. At 909, RS-53 has a GWP that is effectively 56% lower than R410a. Additionally, RS-51 (R470B) has a GWP of 717 which is 80% lower than R404a, R507 and half of R448A and R449A.

Can you still get R-410A refrigerant?

Even after 2026, when the EPA will have banned hydrofluorocarbon production, you'd still get until at least that same year before purchasing the product would become illegal. That could extend until 2027. All said, beginning from 2024 onward, you could have three more years to purchase R-410A refrigerant.

What is the alternative to Freon?

Fortunately, there are several alternatives available today, including:
  • R22 Refrigerant: Although this banned refrigerant is still available for use, it is expensive, inefficient, difficult to get, and not environmentally friendly.
  • R32 Refrigerant: R32 is an AC refrigerant compatible with units designed to run on Freon.

What year did AC units stop using Freon?

The Environmental Protection Agency (EPA) began the phase out of Freon in 1992 when it ordered the ban that took effect in 2020. Because of the long phase-in starting in 2010, new air conditioning, heat pumps, and refrigeration systems stopped using Freon, which is also known as HCFC-22 and R-22.

How many years should an AC unit last?

While every unit is different, and every homeowner has a different understanding of when their central air conditioner is broken beyond repair, it's fair to say that, with proper maintenance and care, you can expect a good 15 to 20 years of cooling from a new high efficiency air conditioning system.

What is the most expensive part to replace on an AC unit?

Usually, it is a quick fix, but sometimes the failure can be caused by a much bigger problem. The most expensive part of an AC unit to replace and repair is the air compressor.

How much cheaper are new AC units to run than 20 year old units?

How much will a new AC unit save me? How much you can save with a new AC unit will depend on your old unit, the replacement model, how much you use your air conditioning, and the cost of electricity where you live. Estimates vary from 10% to 50% savings on your air conditioning costs per year.

What is replacing Freon in AC units?

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 is the new Freon so expensive?

A Question of Supply and Demand

Therefore, maintenance people and air conditioning system specialists have less supply and are charging more for it. Some businesses have even reported thefts targeting their Freon canisters thanks to its newfound value. After 2020, R-22 won't be produced at all in the United States.

What refrigerant is the carrier going to use?

Puron Advance is Carrier's new refrigerant that will replace Puron in all residential ducted, ductless, and light commercial products.

Can I put R-410A in a R-22 system?

The pressure can become high enough for parts of the system to rupture. At the very least, leaks will occur. Mixing refrigerants is not an option either. This will contaminate the system, and the R22 will not evaporate under the higher suction pressure that R410A requires.

Why is 410A so expensive right now?

Regulatory Changes: As the phase-out continues to restrict production levels and importation, the R-410A price will likely increase. Manufacturing Costs: Fluctuations in the cost of raw materials and manufacturing can also influence the price of refrigerants.

Can I replace R-410A with R32?

No. R32 is not suitable as a drop-in replacement for R410A and must only be used in systems specifically designed for R32.

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