R422B can be used to COMPLETELY replace R-22 refrigerant in new or existing R-22 residential and commercial air conditioning systems as well as non-flooded evaporator chillers. Cannot be added to R-22 unless fully evacuated and recharged with 422B.
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.
For many contractors seeking an easier path to replacing R22, R422D has become a go-to answer for what is replacing r22 freon. Known commercially under names like Freon™ MO29, R422D was developed specifically as a drop-in replacement for R22 in existing air conditioning and refrigeration systems.
An R-22 Refrigerant Replacement for Direct Expansion Refrigeration. Freon™ MO29 (R-422D) refrigerant is a low-toxicity, non-ozone depleting hydrofluorocarbon (HFC) replacement for R-22.
Yes, NU-22B is a direct drop-in replacement for R-22. It is compatible with most existing R-22 components and oils.
R422B can be used to COMPLETELY replace R-22 refrigerant in new or existing R-22 residential and commercial air conditioning systems as well as non-flooded evaporator chillers. Cannot be added to R-22 unless fully evacuated and recharged with 422B.
Description. RS-44b (R453a) is the newest R22 drop-in replacement refrigerant in the U.S. market. RS-44b has been sold worldwide for the past 5 years, branded as RS-70 outside the US. It is the closest replacement to R22 that operates with very similar discharge pressure, cooling capacity and flow rate as R22.
R-22 refrigerant prices range from $90 to $250 per pound. Since you'll need between 6 and 12 pounds to refill a home AC, costs can reach between $660 and $2,400 for a refill of R-22 refrigerant.
R410A is a near-azeotropic refrigerant composed of 50% R32 and 50% R125, with ODP = 0. It is mainly used as a substitute for R22 refrigerant. It has a higher cooling capacity per unit volume and good heat transfer and flow properties, but its pressure values are about 60% higher than R22 at the same temperature.
A2L refrigerants, the new refrigerants for 2026, will replace R-410A in new systems. A lot about A2L refrigerants is explained in their name: The “A” means low toxicity. The “2L” is a safety classification, indicating it is mildly flammable.
Prior to 2020, you could still obtain this obsolete product, which is also known as Freon. Although EPA rules prohibited the sale of new systems using R-22 in 2010, HVAC technicians could still buy, sell, and use R-22 to service existing systems. But not anymore! R-22 is now very difficult to source and very expensive.
R-422B is a non-ozone-depleting refrigerant compatible with all standard oils, equipment components, and materials used in R-22 systems. R-22 systems that convert to R-422B see a minimal capacity loss of less than 10%.
If you're interested in learning how to refill R22 in your air conditioner, it is important to know that this is not something a homeowner can do on their own. Due to complexity, safety concerns, training and licensing required we do not recommend doing this without having a trained professional onsite.
Collectively, all of the emissions of R-22 since its creation have resulted in an “ozone hole” over the South Pole, according to the EPA. 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.
Freon™ 407C has been a popular R-22 replacement because of its properties, which include: Similar cooling capacity, energy efficiency, and pressures as R-22 in systems. An ability to be topped off after a leak, multiple times, with minimal impact on system performance.
Yes. The mass flow rate and operating pressures of Freon™ MO99 are the closest of all the mineral oil compatible replacement products and will likely perform adequately in an existing R-22 system with a capillary tube expansion device.
Meaning the phase out of R22 has been planned for almost 30 years. So in summary, it's true, the EPA has mandated that no new “virgin” “HCFC 22” can be manufactured or imported after 2020 due to its effect on the environment.
Many Amish homes are built with plenty of windows to help circulate the air and bring in the cooler overnight temperatures. They open the windows on the top floors to help the heat escape while the family retreats to the lower grounds within their homes for comfort.
January 1, 2025: Manufacturers stopped producing new R-410A residential split systems and heat pumps. Equipment manufactured before this date can still be sold and installed. January 1, 2026: The original deadline for installing R-410A split systems manufactured before 2025.
The information below will try to dispel some of these myths. Arkema recommends using Forane® 427A (R427A) - The EASY RETROFIT™ for your r-22 retrofit solution. When it comes to drop-ins, the truth is that there are none. The hope of “drop-in” refrigerants has become common over the years.
You cannot just switch refrigerants because R410-A and R-22 have different chemical properties. R410-A operates at a higher pressure. If you put R410-A into an R-22 system, the parts will rupture due to the increased force. You can convert your current system to one that runs on R-410A, but the cost will be high.
The Key Differences Between R22 & R32
R22 loses on both fronts. This gas has a medium ozone depletion potential, which is too high to be approved for any use. Meanwhile, its global warming potential is 1810. R32 has a zero ozone depletion potential and a GWP of 675.
In 2025, R-22 costs between $90 and $250 per pound, with the average price around $125 per pound. Since most home systems need 6 to 12 pounds, a full recharge—including labor—can cost $660 to $1,900. And prices will only keep climbing.
Adding refrigerant to your central A/C system isn't something you should need to do regularly. In fact, a properly functioning system is designed to run efficiently without requiring frequent refills. On average, most central air conditioning systems need to have the refrigerant replaced ever two to five years.
R-22 (Freon®) is scarce and expensive due to new production being banned. Only licensed HVAC companies can purchase the refrigerant legally. Now might be a good time to upgrade your aging HVAC system.