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.
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.
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.
Freon™ MO99 has been designed to closely match the pressure, temperature, enthalpy, and mass flow properties of 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.
Explanation: A refrigerant that can be used as a direct service "drop-in" substitute for R-22 in a small appliance is R-407C.
What's a safer alternative to R22? All air conditioners and cooling equipment currently being manufactured use hydro-fluorocarbon (HFC) refrigerants. R410A is the most common, but others include R134a, R407C and R407A.
Freon™ MO99 works well in low and medium temperature refrigeration, as well as air conditioning or heat pumps.
"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.
The pressure can become high enough for parts of the system to rupture. At the very least, leaks will occur.
Features and Benefits. 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.
On January 1, 2020, the U.S. Environmental Protection Agency (EPA) banned the production and import of R-22. But units manufactured in 2009 and earlier still use R-22 today. Its use will eventually be eliminated in the U.S., so all current and future homeowners must be prepared for the transition.
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.
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. The production (not use) of R-22 is being phased out.
So… what refrigerant can be mixed with R-22? None. You can't mix refrigerants.
For example, 68 psi suction pressure on a R-22 system converts to 40°F. Let's say the suction line temperature is 50°F. Subtracting the two numbers gives us 10°F of superheat. Superheat for most systems should be approximately 10F measured at the evaporator; 20°F to 25°F near the compressor.
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.
On a 100 degree day, I would expect to see maybe 250 on the high side on a well maintained system and perhaps 75-80 on the low side.
RS-44b is the lowest GWP HFC R22 replacement on the market at 1664 TAR and is Zero Ozone Depleting.
Assuming a specific activity for Mo-99 of 4.8 × 105 Ci/g, a curie of Mo-99 is worth about $96 and a 6-day curie is worth about $470.
Mo-99 is produced in the uranium-bearing targets by irradiating them with thermal neutrons. Some of the U-235 nuclei absorb these neutrons, which can cause them to fission. The fission of the U-235 nucleus produces two but sometimes three lower-mass nuclei referred to as fission fragments.
R22 has been banned due to its high ozone-depleting potential. R22 leaks are highly toxic and can damage the environment and people's health. The use of R22 freon in air conditioning units has been restricted & banned from being used in any new products.
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.
Size of the HVAC Unit
Since an air conditioner uses an average of 2 to 4 pounds of refrigerant per ton, a 3-ton AC will need an average of 9 pounds. With the cost of R-22 refrigerant increasing each year, it can cost a pretty penny to recharge larger systems that still use the refrigerant.