It is well-suited for AC applications because it closely mimics the operating characteristics of R-22 and works over the same operating pressures as R-22.
Product Information. A retrofit blend that is designed to match R22 in air conditioning applications. There is a slight reduction in capacity which would result in slightly longer run times. Systems that were previously retrofitted to R417A can operate with a replacement charge of R422B.
From what I read so far mixing up / topping off R22 with R422B is not recommended (acid formation).
422b is a common replacement for r-22 but shouldn't be mixed with r-22. That is some shady stuff. Also charging you for r-22 is just plain wrong due to price difference. I would call the home warranty company immediately and tell them what you saw. As for damage? I can't definitively say...
Charge the equipment with R-422B as a liquid. Do not charge liquid refrigerant directly into the compressor. The total charge of R-422B will depend on the type of system.
According to the 609 EPA rule, mixing refrigerants is illegal and anybody caught doing so will be heavily fined.
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.
Allows for use in existing equipment. Genetron 422D makes replacing R-22 in an A/C system easy. In most situations, just recover the R-22, replace any of the critical seals, recharge the system with Genetron 422D, and perform normal checks. Works with existing expansion devices in most cases.
Recovery of R-422B requires a recovery cylinder with a service pressure of 260 psig minimum. National Refrigerants, Inc. * Capacity loss will be greater in high ambient temperatures.
R-422B capacity is 12% lower than R-22, an additional 5% lower than MO99. Mass flow rate of R-422B is 20% higher than R-22, an additional ~10% higher than MO99. R-422D capacity is 8% lower than R-22, similar to MO99. Mass flow rate of R-422D is >30% higher than R-22, an additional 20% higher than MO99.
Another significant problem with the R422B is that it has a greenhouse effect. It has a global warming potential of 2526. Hence, the reason you require an EPA certification to purchase or handle the refrigerant.
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.
Conditions to avoid : This substance is not flammable in air at temperatures up to 100 °C (212 °F) at atmospheric pressure. However, mixtures of this substance with high concentrations of air at elevated pressure and/or temperature can become combustible in the presence of an ignition source.
Mixing refrigerants is not recommended. R-22 replacements should not be used to top off R-22 systems. R-22 should be recovered using appropriate equipment and managed according to U.S. EPA guidelines specified in Section 608 of the U.S. Clean Air Act.
Since 2010, the most common R-22 replacement was R-410A, a refrigerant without the ozone-depleting qualities of R-22. Read this article on the refrigerant transition for a more thorough explanation of the reasoning and science behind the change.
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%.
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.
R22 Should cool right. 78 degrees suction line 84 degrees head line.
Because R-22 depletes the ozone layer, production and import was further limited in 2010. In 2020, R-22 will no longer be produced or imported. After 2020, only recovered, recycled, or reclaimed supplies of R-22 will be available.
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.
The liquid densities are approximately the same for R22 and R422D, while the vapor density is higher for R422D than that for R22. Both the liquid heat capacity and the vapor heat capacity are 15–25% higher for R422D, and the difference increases with the increase of the pressure.
Freon™ MO99 can be used to retrofit R-22 heat pumps .
Of all the "no oil change" replacement refrigerants, Freon™ MO99™ offers the closest performance match to R-22. Freon™ MO99™ has compatibility with all traditional and new lubricants, including mineral oil (MO), polyolester (POE) oil, and alkylbenzene (AB) oil.
Industries, commercial businesses, property owners, and others looking for an R-22 replacement to maintain their air conditioning (AC) systems can turn to Freon™ NU-22B™ refrigerant. Freon™ NU-22B™ is compatible with all standard oils, equipment components, and materials used in R-22 systems.