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.
If any R-22 and R-410A is mixed in any way, oil clumping will occur which will lead to restrictions and blocking of refrigerant flow through the coils which will result in poor performance, system damage and eventual failure.''
The refrigerants have very different heat-transfer properties and use chemically incompatible lubricating oils, so they aren't interchangeable and can't be mixed. Transitioning one unit to the next could require replacing the compressor, evaporator and condenser, along with potentially replacing their copper lines.
So… what refrigerant can be mixed with R-22? None. You can't mix refrigerants.
R-22 uses simple mineral oil, non-toxic, safe, stable, etc. while R-410a uses a somewhat exotic Poly o Ester (POE) oil typically found in jet turbine engines. The refrigerant used MUST match the oil present in the system, which is one reason why you can't replace the R-22 with R410a in a system.
When you replace an air conditioner or heat pump and upgrade from R-22 to R-410A, the ideal solution is to replace your refrigerant lines. This is because the mineral oil used in R-22 systems is not compatible with the new R-410A refrigerant and oil.
In fact, R410A can cool a room slightly faster with less energy. Efficient performance is a significant benefit of R410A. However, it works the same way as R22 in absorbing heat to provide cooling. But R410A doesn't make a room any colder than its predecessor.
To retrofit an R-22 system with R-410A system your line set must not be more than 25-50 feet in total distance. If the line set is longer than this, you will have to replace the line set with larger lines.
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 are my options for replacing R-410A? Because there are no retrofits for R410A, a replacement is needed. The replacements for R-410A are the two A2Ls, Forane® R-32 and R-454B. Forane® R-32 can be used in new equipment designed specifically for mildly flammable refrigerants as a replacement for R-410A equipment.
The answer is an undeniable and indisputable yes. Though you may hear several opinions to the contrary, we know from experience that it will cool equally as well as the old unit. When tuned properly, it will produce at least as cold of air as the R22 counter part being replaced.
Systems that use R-410A also use synthetic oil for lubrication, rather than mineral oil like in R-22 systems. The synthetic oil is more soluble, making the whole system more efficient. Therefore, R-410A works better than R-22 and has more efficient systems.
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.
The answer is yes and no. 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.
The operational pressure of the refrigerant R410A becomes higher compared to R22. In the worst case, a lack of compressive strength may lead to piping explosion.
Tube-side materials in R-410A coils need to be thicker due to the higher operating pressures associated with R-410A relative to R-22. We're not arguing that there's not a difference in operating pressure between the two. There is – roughly 130 PSI for R-410A evaporators compared to about 70 for R-22.
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.
R-22 is a refrigerant that is often used in air- conditioning equipment. 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.
RS-44 is a “Drop-in” replacement for R22 providing an easy and at the same time a long term solution. Because there is no need to use expensive and hygroscopic synthetic lubricants, the risk of moisture ingress into a refrigeration system is completely avoided.
As you might imagine, this isn't going to go well for your air conditioner or heat pump. Long story short? Never mix R-22 and R-410a. Unless of course you are looking to destroy your HVAC system, then, by all means, go live that dream.
Mixing R22 with R407C or any other refrigerant. According to the 609 EPA rule, mixing refrigerants is illegal and anybody caught doing so will be heavily fined.
Explanation: It is important not to mix R-22 and R-410A refrigerants in the same container because they use different oils. Mixing refrigerants that require different oils can lead to equipment malfunction due to incompatibility between the oils and the refrigerants.
So what the manufacturer recommends, the best option, is if you're going to go from an R22 unit to an R410 unit, that you should have your line set replaced at the same time. So everything is new. There's no contamination, there's no possibility of contamination.
R-410A refrigerant prices range from $40 to $75 per pound. To replace R-410A refrigerant in your leaky AC, you will need to hire an HVAC professional since the EPA prohibits handling AC refrigerant without a license. R-410A is actively being phased out due to its high global warming potential.
Understanding the Current HVAC Refrigerant Guidelines
Most HVAC brands have started to swap out their older AC and heat pump units over the year, preparing for the 2025 deadline, when they will have to completely stop the production of systems with R-410A.