What refrigerant can be added to R-22?

Author: Sonya Grant  |  Last update: Wednesday, February 18, 2026

So… what refrigerant can be mixed with R-22? None. You can't mix refrigerants.

What refrigerant can you mix with R-22?

Rs44b can be mixed with r22.

What refrigerant can top off R-22?

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

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.

Can you put 407C in a R-22 system?

R-407C should be used only in systems that currently use R-22. It should not be mixed with R-22 or any other refrigerant. 5. The capacity of the existing R-22 thermal expansion valve (TEV) will be approximately the same when using R-407C.

How to Add Freon/Refrigerant to a Refrigerator with a Piercing Valve - Easy DIY Repair!

What is the best substitute for R-22?

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.

Are 407C and R-22 pressures the same?

Heating mode The compressor pressure ratio of R-407C was 0.7% to 9.3% higher than R-22 for the two heating mode test conditions.

What would happen if R-410A was added to an R-22 system?

A NJ Tech Explains. The answer: No. Putting R-410A refrigerant into an AC unit that was designed to use R-22 will cause the unit to die soon after it tries to run.

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.

Can you use R32 in a R-22 system?

As a solution, there are two alternative refrigerants used as substitute refrigerant for R22, namely R290 and R32. The R290 is widely used as working fluid in A/C system of Europe countries; meanwhile in Japan and South East countries, R32 is utilized as substitute refrigerant for R22 and R410A (Yu et al., 2010).

What refrigerant is drop in replacement for R-22?

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.

What happens if you put R134a in a R-22 system?

No, the compressor will fail. These two refrigerants have very different properties. One of R22 and R134a is high pressure and the other is low pressure. They don't mix chemically and don't have the same boiling point, leading to inefficiencies and eventual compressor failure.

What gas can replace R-22 refrigerant?

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.

Is 404a a drop-in for R-22?

The biggest problem of using refrigerant R404A to replace refrigerant R22 is the problem of lubricating oil. PVE ester oil must be used to replace the mineral lubricating oil for R22. Ester lubricants have high affinity with water and poor dehydration.

Can you add R438A to a R-22 system?

R-438A should not be mixed with any other refrigerant! Demand Cooling™ is required for low temperature applications. 5. When retrofitting from R-22 to R-438A, the expansion valve will likely not require replacement; however, it is recommended that the valve loadings be evaluated to verify that they are adequate.

Will a Txv rated for R-22 work with R-410A?

"Hey Dan, do I need to change the TXV valve when switching the outdoor condenser from R-22 refrigerant to R410A?" Yes, you are going to have to change out the TXV. Why? Well, R410A works at a different temperature and a different pressure than R-22. If you don't change it then it's not going to boil off correctly.

Can R-454B be retrofitted into existing R-410A or R-22 systems?

ACHR NEWS: As a mildly flammable refrigerant, R-454B can't be retrofitted into existing R-22 and R-410A systems.

What can I use instead of R-22?

Freon™ MO99 refrigerant is a relatively affordable and eco-friendly alternative for R22 air conditioners. You can use it to revive older systems with little to no refrigerant charge, as well as systems that need replacement components.

Can I mix R-410A with R-22?

No, you cannot. To make a short story long, R410A and R22 are refrigerants. They are both good refrigerants and they both work, but they have to be charged in the system at different pressures. R410A is a higher pressure system and R22 is a lower pressure system.

Is MO99 a direct replacement for R-22?

Of all the "no oil change" replacement refrigerants, Freon™ MO99™ offers the closest performance match to R-22.

Is it legal to add R-22 refrigerant?

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 freon is compatible with R-22?

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.

What happens if you mix R-22 and 407C?

If your system is running on R22 most likely is using mineral oil to lubricate the compressor. If you mix R407C with R22 inside your system the molecule of the HFC (R407C) gas will not link with the oil and in just few months of operation you will have a "sludge" like lubricant formation inside the circuit.

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