No, R-134a cannot be used as a direct, "drop-in" replacement for R-22. They have fundamentally different operating pressures, densities, and oil requirements. Attempting to mix them or swap them directly will cause system failure, severe loss of cooling capacity (up to 25% or more), and damage to the compressor.
No, you cannot directly replace R22 with R134a. They have vastly different operating pressures, boiling points, and require incompatible compressor oils. Simply swapping them will cause poor cooling, system damage, and eventual compressor failure.
The best replacement for R-22 depends on your system's configuration. Because R-22 is fully phased out, the most common drop-in substitutes are R-438A (MO99), R-407C, and RS-44b (R-453A). These allow for system retrofits, though complete system replacement is often recommended for aging units.
A 30-pound cylinder of R-22 refrigerant is generally worth between $500 and $1,200 to purchase wholesale, and up to $2,400 to $4,500 if bought directly from a service company during a home repair.
No, you should never mix R22 and 134a refrigerants. Doing so causes severe chemical and mechanical problems that will ruin the compressor and void equipment warranties.
R-22 refrigerant typically costs between $𝟗𝟎 and $𝟐𝟓𝟎 per pound. Because R-22 has been phased out, the supply is dwindling, which causes prices to continuously climb.
The specific volume of R134a is 1.47 times than R22, and the latent heat of evaporation is small, so the cooling capacity of R134a units is only 60% of R22 units.
R22 refrigerant is illegal to import and manufacturer in the U.S. But it's not illegal for anyone to buy R22 freon. And it's not illegal to sell it IF you have a license. As long as the stocks last, you will be able to continue purchasing R22 from specialized dealers and form your air conditioning company.
It is possible to use a different type of refrigerant inside an R-22 system. There are “drop-in” refrigerants that serve exactly this purpose. When someone has an R-22 leak, it's possible to remove all the R-22 from the system and replace it with a drop-in refrigerant.
R-22 is extremely expensive because it has been legally phased out. Driven by federal environmental regulations, skyrocketing supply chain costs, and contractor labor rates, prices range from $100 to $300+ per pound, meaning a standard refill can cost between $800 and $2,000+.
Since Freon MO99 is the closest capacity match to R-22, compared with most of the other no-oil change refrigerants, it will reach the desired set point before other, lower-capacity refrigerants. With Freon MO99, residents are unlikely to know a different refrigerant is even being used.
Yes, MO99 (also known as R-438A) is a direct, "no-oil-change" drop-in replacement for R-22. It is specifically engineered to replace R-22 in residential and commercial air conditioning, heat pumps, and refrigeration systems.
R417A refrigerant is an HFC mixture that serves as a substitute for R22. It is compatible with traditional lubricants. In most cases, the lubricant type does not need to be changed in the event of retrofitting.
The "best" R22 replacement depends on whether you are doing a drop-in retrofit (using existing equipment) or upgrading the whole system. For retrofits, the top choices are R407C for maximum efficiency and R422D for easier compatibility. For long-term viability, replacing the system entirely with an R454B or R32 system is recommended.
As of January 1, 2020, the United States banned the use of the R22 refrigerant, commonly known as Freon.
Yes, an R-410A compressor can technically be used with R-22, but it is not recommended without significant mechanical adjustments and carries performance risks.
For example, when replacing R22 with R134a, there are many problems that cannot be replaced directly; the cooling power of R134a is 60% lower than that of R22, which means that the condenser of the system must work overtime to achieve the same cooling capacity. R134a is not good for rubber parts and can cause leaks.
A 30-pound cylinder of R-22 refrigerant is generally worth between $500 and $1,200 to purchase wholesale, and up to $2,400 to $4,500 if bought directly from a service company during a home repair.
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.
R-22 refrigerant typically costs between $𝟗𝟎 and $𝟐𝟓𝟎 per pound. Because R-22 has been phased out, the supply is dwindling, which causes prices to continuously climb.
Refrigerant can only be sold to technicians certified under the Section 608 or Section 609 technician certification programs, where individuals may only purchase refrigerant consistent with the appliances covered by their certification.
Comstar RS-44b is the closest, market available drop-in replacement for R22 that requires no oil changes and no system changes.
While the production of new R12 is banned, it is not illegal to sell or use R12. In fact, many of the cylinders and cans of Freon R12 sold for decades throughout the United States are still around today.
Why is R-22 refrigerant so expensive? R-22 refrigerant is so expensive because there's such a limited supply of it left. You see, R-22 is an “ozone-depleting substance” and is extremely harmful to the environment.
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.