What’s the Difference Between R-22 and R-410A?

AC Heating Connect Service Tech uses an iPad 6 for important HVAC information

One of the hottest discussions (pardon the pun) within the air conditioning and heating industry is the difference between two refrigerants – R-22 and R-410A. As a homeowner considering a purchase, it’s important that you understand the difference so you can make the best decision for your system. We’ve outlined below the main differences and why they matter.


  • Often referred to by a brand name like Freon®
  • As of 2010, R-22 was discontinued for use in new air conditioning systems
  • R-22 is a hydro-chlorofluorocarbon (HCFC) which contributes to ozone depletion


  • Often referred to by a brand name like Puron®
  • Has been approved for use in new residential air conditioners
  • Is a hydro-fluorocarbon (HFC) which does not contribute to ozone depletion
  • Will become the new standard for U.S. residential air conditioning systems in 2015

Performance Differences

Newer air conditioning models are designed to be used with R-410A for reliable and more efficient operation. Because R-410A can absorb and release more heat than R-22, your air conditioning compressor can run cooler, reducing the risk of compressor burnout due to overheating.

R-410A also functions at a higher pressure than R-22, so new compressors are built to withstand greater stresses, reducing the chance for cracking. If you were to put R-410A refrigerant into a system designed for R-22, the pressure would be too much and the unit would break.

All air conditioners use an oil to keep the compressor lubricated during operation. R-22 air conditioners use mineral oil and R-410A systems use synthetic oil. The synthetic oil is generally more soluble with R-410A than mineral oil is with R-22. This means the R-410A system operates more efficiently reducing wear and tear on the compressor.

Dry Charging

While R-22 was outlawed in 2010 for use in new units, some companies are taking advantage of the law by producing what’s known as ‘dry charge’ units. These are new units that don’t have the refrigerant installed at the factory. Instead, a technician is required to come out to your home and install the R-22 refrigerant. While this practice is technically legal, this isn’t the best option for the following reasons:

  • There is a limited supply of R-22 and its price will increase as supplies diminish
  • R-410A offers greater efficiency, saving you in energy costs, and is much better for the environment
  • Dry charged units typically offer much shorter warranty periods

What have you heard about these two refrigerants? We can help give you unbiased answers!

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271 thoughts on “What’s the Difference Between R-22 and R-410A?

  1. Can anyone shed some insight onto my problem. We have a Kenmore 22000 btu air conditioner bought in 2003. For the past few years it constant!y freezes resulting in us having to turn on fan only and letting it defrost. I thought the problem might have been the air bouncing off a mattress and box spring that was sitting in my dining room where the A/C is (long story don’t ask). But yesterday when I was finally able to move the mattresses it was doing the same thing…a little worse actually. It was in the lower 90’s yesterday and about 88 inside but there the A/C was frozen. Does it sound like the A/C is on its way out? Any help would be very appreciated as 800.00 for a new one is going to be a stretch.

    • Ron,

      It sounds like your Freon is low, maybe a leak? If it’s R-22 and you know someone that has some you might have them check the pressure on the unit. When the Freon is low it will freeze the A coil in the furnace causing little to no air flow and that will make the problem worse. Very dirty air filters or maybe a very dust covered A coil can cause the same problem.

      Hope this helps…

      • Not to mention that R-22 has been ‘outlawed’ since 2010; thus finding a supplier is darn near impossible. AND should you find one, it’s expensive (my area $75-100 per #). Also, don’t let someone tell you, ‘that R-410A will do as a replacement’ , because it WON’T.

    • Two things can cause a normal operating packaged air conditioner coil to freeze and it is more common than most folks realize. The first is operating the unit with the thermostat adjusted at a too cold temperature setting. This usually occurs when trying to cool a large area with a unit that is undersized. An air conditioner that is properly sized for the space it is cooling, will cycle the compressor off periodically. If the fan continues to run, any ice formation will melt quickly when the compressor cycles off. The second issue is never cleaning the air filter or again operating the unit on the lowest fan setting and coldest temperature setting. Low air flow through the cooling coil doesn’t have the necessary heat the unit was designed to absorb, so the cooling coil gets too cold and ice starts to form. And if the compressor never shuts off, the coil eventually ices over. Low refrigerant charge does not cause icing, it reduces the unit’s ability to remove heat since there is less refrigerant to absorb heat. Also, R22 has not been outlawed. Production of R22 in the United States will end in 2020 and may continue to me made in other nations indefinitely, although it would be illegal to import into the US (like illegal drugs).

  2. The discussion of “climate change” and “ozone holes” is really moot, in relation to the changing of refrigerants. Back in the late ’80s, I supervised a major overhaul of a low temp, cascade system. Getting ready to do a re-start, I contacted DuPont Chemical an ordered 5000# of R-12. I was informed that it would be a month before the order could be shipped. Further discussion of the time element, I was told that presently about 100,000#
    was shipped regularly to the “cosmetic” industry; i.e.: hair spray, deodorants, etc. The chemical and equipment manufacturers along with the EPA became a driving force to eliminate the “standard” refrigerants. This change has resulted in more “new” equipment sales and less “repair”. This covers all the house-hold refrigerators, auto air conditioners, building air conditioners, etc etc. Okay, we are going to “modernize” America and maybe the world. BIG bucks were made by everyone in the supply chain. The ironic part of this, was that R-12 could be bought in Mexico for the ‘old’ price; and, shipped into the USA as a fire retardant. Now let’s look at this problem of “adding” or adjusting the refrigerant charge in the modern equipment. The new refrigerants are “azeotropic” mixtures. Making it simple means that there are at least two different chemicals. So when there is a leak, it is impossible to determine how much of which chemical is gone; i.e.: we mix apple juice and orange juice to make a drink; we spill some and want to refill the pitcher. How much apple juice was lost or was it mostly orange juice. The only way to add to the modern systems, is to totally reclaim the refrigerant and re-charge the system with the correct amount. BOTTOM LINE IS MONEY—LOTS OF MONEY for everyone, except for the equipment owner…..

    • It’s the cost of progress! But I’m sure some would rather be bled when they’re sick, because it costs them less money? Seriously?

      Some would walk on red hot coals, even sacrifice their lives for their children’s, children’s, children, etc. While some only care about themselves in the now! Mostly childless?

      Philosophy? Psychology?

      I believe in any science that aims to perpetuate mankind’s existence on planet earth, despite those that just don’t get it!

      From what I understand, considering all pertinent things one ‘should’ consider, a geothermal heat pump is the best solution ‘today’ in both keeping cool and warm, especially when combined with solar heating/photo-voltaic cells. Of course incorporating a trombe wall as well as other passive technologies is even better.

      So obviously my vote goes to the refrigerant that considers all things of the day, opposed to archaic technologies, which mind you, served their purpose well, along the chain of human knowledge.

  3. I find 2 critical errors in the information contained in this article.

    First, R22 is actually a more efficient refrigerant than R410A, it transfers heat more effectively than 410A. R22 has been “outlawed” by the EPA under the guise of environmental protection because it contains chlorine, a naturally occurring element.

    Second, systems are presently more efficient than in past because the equipment design allows them to use less electricity to do the same job. NOT BECAUSE OF THE DIFFERENT REFRIGERANT.

    • Thanks for your post, Kylar. Just to add to the confusion – the R22 phase-out in the US happened in 2010. At this time, there were also significant changes in US efficiency regulation going on for residential AC systems that happened in 2006 and again in 2013. So, you are correct in saying there were significant changes in equipment designs during this period to achieve the new minimum efficiencies and in parallel, the new designs were also dealing with the R22 phase-out. To further confuse things, the standards for capacity and efficiency ratings (how much cooling you get at particular conditions – e.g. hottest days versus milder days) were also changing. All these changes have added to the confusion. The engineers tell us that R410A is more efficient but I think some of that is due to the higher operating pressures involved. So, I think it is sort of apples and oranges to compare them as you suggest and the simultaneous changes of equipment design and testing standards also makes it difficult to make blanket statements about this period. In any case, the days of new equipment with R22 are gone.

      It is interesting to note that the deal to ban R22 was part of the 1987 Montreal Protocol treaty to fix the hole in the ozone layer – which now seems to be shrinking, perhaps as a direct result of the chemical bans. However, the move to R410A apparently did nothing to affect the latest environmental concerns about global warming. So the next big changes affecting HVAC refrigerants will probably be related to regulations attempt to address global “climate change”. We will try to cover these changes as they evolve over the next few years so check out the site when you begin to hear about this in the news and we will try to provide a forum for more debate. Thanks for visiting the site and posting comments.

    • Since when did you find some naturally occurring chlorine gas just hanging around? It’s combined with sodium in the form of salt

  4. We just had to add $500 worth of R-22 to our ten year old central air conditioner. I asked the tech if the unit was leaking and he said ” it would take about $800 worth of R-22 to find out”. He said we should change the system over to R410A and he would send us a quote for a new unit. Does the whole system have to be changed to run R410A?

    • Hi Anna – yes, usually you have to change the whole system out to go from R22 to R410A. Sometimes you can get by with just changing the outdoor unit and changing the expansion device on the indoor coil. However, with a ten year old system that has a known leak (possibly on the indoor coil) you might still have a problem. You might be better off getting some additional quotes for both repairing the leak on your old system or buying a new one. Hope this helps.

        • if you can find someone who is good at finding and fixing leaks you might get a few more years out of that system. It often pays to shop around for contractors who can do that sort of troubleshooting. some are better than others at certain types of repairs.

          good luck!

  5. last year I got a call about “ac service ” and I bit …. the guy that came out didn’t know what he was doing and put a 410A charge into my R-22 unit ( not much but some ) … since that time my unit runs constantly to cool at all .. did he ruin it or can I have a tech I trust come out remove the mix and replace it?

    • Hi Dave – here are a few things to consider. First of all, if they added charge then you might have a leak. If they did not fix the leak then you could have a recurring low charge situation causing low or no cooling. It is also not good to use the wrong refrigerant because that could also lead to poor performance. The refrigerant properties are matched to all the system components so it needs to be right and charged to the right level. You should probably have a qualified HVAC contractor evaluate your system and diagnose/fix any problems. If you know how much R410A was added earlier that might be helpful. They might be able to fix it. Good luck!

    • Since the EPA does not require unique service fittings for R410a to be used, despite there being R410a fittings made, it is possible to charge R410a into anything. Anyone charging an R22 system must be EPA section 608 certified. Such certification helps insure technicians identify refrigerants and avoid mixing them. Contaminated refrigerants can be very expensive to dispose of and are considered hazardous waste. If consumers were more knowledgeable about the services, they were paying for, reporting illegal activity can net a reward of $10,000 or enough to pay for your new system, to include thousands in fines for the technician or business performing illegal work. If there is a person servicing your refrigeration equipment refrigerants, ask to see their EPA certification. If they don’t have any, send them away. They are not qualified to be taking the cap off a refrigerant service fitting.

  6. Gobstopper seems to have his/her mind made up about Freon and the ozone hole, but the connection between the ozone hole and Freon is really very simple. Ultraviolet rays (the rays that make us tan, and that can cause skin cancer, are the rays the ozone layer helps to stop) come into the Earth’s upper atmosphere from the sun and knock off chlorine atoms (Cl) from Freon. Oxygen like we breath (O2) and ozone (O3) are also in the upper atmosphere and are also broken up by ultraviolet rays. The single Cl and the single O atom combine to make ClO. That means the oxygen is not available to make more ozone (O3). So more chlorine in the Earth’s upper atmosphere means less ozone.

    Gobstopper is right about there being less ozone at the north pole and south pole during the cold season. That’s because air circulation around the poles is stronger during the cold season. More ozone is always produced other places in the upper atmosphere than the poles, because there is more sunlight to break up O2 in those places. After oxygen (O2) is broken up, the single Os will join another O2 to make O3, if there isn’t anything else for it to join. But this ozone (O3) can’t get to the poles until the atmosphere gets warmer and the circulation in the upper atmosphere gets weaker, letting the ozone (O3) through to the poles. So yes, there is less ozone at the poles during the cold season, but that doesn’t change the fact that more chlorine (Cl) in the upper atmosphere leads to less ozone (O3) being produced.

  7. Pingback: Buying the Best Refrigerant Recovery Machine – Top 5 Picks for 2017 - Outdoor Chief

  8. The whole BS about “hole in the ozone layer” caused by Freon is really goofy and not really science based. Ozone is created by sunlight shining on the atmosphere and converting oxygen (O2) to ozone (O3). When the north pole and south pole seasonally get no sunlight you’re going to get a hole in the ozone layer anyway. Naturally.
    Yet another law made up by fear-mongering. Oh yeah, and I prefer Freon to Puron anyway. Less leaks (I own several houses, some with Freon and some with Puron).

    • Agree with Gobstopper. Prefer Freon. In 2014, our furnace went. So we followed advice and had both furnace and (older R22) AC replaced. Nothing wrong with the AC unit. In fact, it was virtually maintenance free and had it for a very long time. A year into the newer R410a, the compressor went. Had it replaced. This year, little air flow. Turns out it was buildup of debris on the condenser coil/cooling fins which by the way, was only bad on 2 out of the 4 sides of the unit. Sprayed it out with a garden hose. Had a tech come by to ensure no damage to the unit. They checked it, flushed the system, etc. Now the thing turns on for so many seconds then turns off, and repeats. Had to turn system off completely. Now they’re coming back free of charge for another check. All I know is this, for 18 years we’ve had the older R22 running with no maintenance service nor do I recall having to treat it like a baby constantly cleaning it’s “bum” – the condenser coils/fins. In effect, we removed a functioning R22 system for a the newer supposedly “better” AC system that’s cause nothing but problems and money spent on service. If I could, I would love my old R22 unit back. Yes, my old unit back. At least I know it worked. Yes it would eventually break. But it’s better than worrying if the high maintenance pieces of junk called R410a will break down every time we turn the system on. Judging by all the feedback in this forum, sounds like R410a is a major disaster.

  9. Three years ago, my a/c unit was replaced with a system using R-410 A. Since it’s been installed it has had to be charged four times. The tech. that installed the unit insist nothing is wrong with the system even though the unit had to be charged twice the first year. Is this true?

    • AC systems are hermetically sealed systems and should not have to be “re-charged” unless they did not have the right charge to begin with or they have developed a leak. You might want to get some other opinions.

  10. Can’t beat the old refrigerants. I found newer R-410a units with more leaks at the evap coil elbows big time. And yes, the new refrigerants are blends, they also have ” Glides” at their boiling points which does make them less efficient in that area. If there is a leak with
    R410a, ( depending on how much was lost ) the chemistry is now changed and the entire charge should be recovered and replaced as a liquid charge ( after the leak is repaired). Being R-410a run at higher operating pressures, higher pressures means higher resistance. To over come the higher resistance, the compressor will draw higher amps which will cause the compressor to run a little warmer and raise your electric bill. The Heat of compression also reduces a units efficiency as it adds heat to the system that it is trying to remove, or transfer. ( Note, this is important for all systems, as a hot running compressor will in time break down the insulation on the windings ( which is usually just varnish ) and cause a burn out. As of the Ozone factor, don’t believe the politics. There is still no change and won’t be as long as volcano’s are shooting sulfur into the strat. As of myself, I’m still using R-22 and will be. I’m leak free since install of 2003. I’m considering designing a system using R-500 as it runs a really low head pressure which in turn would be a low electric bill. Use pleated air filters and keep your coils clean….that will aid in heat transfer…it is a science! Even tho the compression ratio’s are different, I’m still finding the FLA ( full load amps or running amps) a little higher with R-410a. Just something else to sell. Like always newer electronics and changing analog to digital. It actually hurt the economy. Robotics first, employee’s second. Hope you liked the read. Joseph L.

    • Poo Poo Joseph. My father used to tell me he had to walk 10 miles a day to go to school every day. My next door neighbor is 83 years old and he tells me that new cars that state have leather seats are not really leather anymore. Your one of these type of guys aren’t you Joseph?

  11. hello .. please let me know why must charging R410a as liquid ? and what happens if charging as gas ? what is phenomenon called ?

    • Charging with liquid is recommended to ensure best performance. Because R410a is a blend of two different refrigerants, fractionation can occur if removed from the cylinder as a vapor.

  12. I have a Trane unit installed in a new build on Oct 2014. I now have a leak in my condenser and have to have it replaced. The tech told me this was a common problem. Just wanted to know if this is something you have seen also? Thank you for your time.

    • Hi Rodney, Refrigerant eaks can happen from time to time and for various reasons. Sometimes is it better to just replace the coil rather than trying to find and fix the leak so it is possible you might be on the right track here. You might want to get a couple different contractors to quote this repair to make sure you comfortable with the decision. You might also check your warranty on that system too as it might be covered. Good luck with your HVAC project and thanks for visiting our site!

      • Getting ready to have my 3rd a coil in 5 years. Hifh pressure systems and thin copper a coils don’t work. I am told by my company some are on their 6th and 7th. Thanks enviromenalists.

  13. I have a slow leak in my 2004 trane XL19. What are your thoughts about switching over to 407C once its fixed ? This is a cheaper option than relaplacing my unit which still works fine except for the small leak. I have a personal friend put 1 to 2 pounds 3 times in the last 8 months. Please advise. Thanx

    • Please check with the unit manufacturer or qualified contractor on refrigerant retrofit options for your specific unit.

    • R410-A systems and components are designed for different pressures and are not compatible with R-22. Also, R-22 has been banned from new equipment in the US and is or will soon be in short supply and thus, higher priced in the future. If you did manage to change enough parts and the oil etc., you could probably get an R410-A system to pump R22 but the capacity and efficiency could be way off for the cooling needs of your space. So, I’d suggest it might be physically possible to switch back to R22 but it would not be economically beneficial and you might not be as comfortable. There are some other articles in this site that deal with this topic so you might try searching for those if you want more info. Hope this helps.

  14. My HVAC system is running low of gas (R22). Instead of adding gas, I wish to discontinue the use of Freon 22 because of its ozone depletion property. What do I need to replace in the system to accommodate this new gas (410), Compressor?, Expansion Valve? others?

    • Hi Odedina – in order to move from R-22 to R-410A you would have to change the whole outdoor unit (including the compressor) and the expansion device on the indoor coil if the coil you have is R410A compatible. If your coil is not compatible you would have to change that too and might as well just upgrade to a whole new system. If you just replaced the R-22 with R-407C refrigerant you would probably only have to clean and flush the refrigerant lines and recharge with new synthetic oil called POE. Both R-407C and reclaimed R-22 are ok to use with your old equipment. You might just want to continue using it until it is time to replace the whole system. If you can have someone find and fix the leaks in your system that would probably be the most cost effective solution but upgrading might help reduce your energy costs. We recommend getting quotes from a few different contractors before deciding. I hope this help. Thanks for using our site.

    • There are a few drop in replacements for R-22 that I have used and work fairly well like MO99 and Nu22. To switch to 410 would require a completely new system.

    • The whole System. Just add the R22 why because the new HFCs are far far more greenhouse effect gases than R22. We switched from R12 on cars and refrigerators because of Ozone issues but screwed ourselves as these new HFX are 1200+ more damaging as greenhouses gases than C02 R22 to R410 is looking to be simalar. Since the Ozone layer and the big ozone hole in the southern hemisphere is now gone and Ozene is doing its job again I do not see you helping anyone by adding not only $ but higher greenhouse gasses. R134A will soon be phazed out as will R410 but 410 will be farther down the road. Why. Becuase folks normaly keep a car less than 10 years but a home with air more like 40 years. Switching casuses some leakage and everyone switching at the same time would be a big issue for both Ozone and greenhouse effects. Again. Just put some more R22 in the system till this is all figured out would in my opinion would be less damaging to the environment. Putting some more R22 will also make your system work better if it is low thus less energy thus less C02 in the air. Make sence. Dont let some salesman have some tech try and talk you into R410.
      Jim Bronson PhD

  15. If it’s burnt, your tech also needs to flush the system to remove contaminants, and install an acid filter to capture the traces that remain, otherwise you will be replacing components again very soon. And the system should be checked for acid and the filter replaced until no acid remains. It would also be advisable to determine why the compressor failed; a common issue on a unit of that age would be a plugged evaporator causing the compressor to work harder. R-22 prices right now are about $350 to $600 for a 30 lb. jug, so your tech is getting a very high markup. You may want to find another company.

  16. My 16 year old 4 ton Carrier heat pump quit. The serviceman advised that I needed a new compressor as the main breaker was tripped and resetting it, it tripped again. He ordered a new compressor. He advised the existing R22 refrigerant could not be reused because it smelled burnt. CAn that be? I’m under contract with American Home Shield and they now limit R22 to 10.00 a pound. The service company is Comfort First and they quote 1000.00 to recharge the 10.3lbs of R22. Advice ? Recover existing R22? Get another contractor to recharge the system? Buy R22 on line at about $30 a pound? Is charging for 11 lbs and using 10.3 lbs ethical in the trade?

    • Typically the reclaimed refrigerant is not reused unless it goes through a recycling process. It could be contaminated by the failed compressor, which could possibly have a nonconforming motor resulting in the ‘burnt’ smell. On average, AC systems in the US are about 14 years old when they are replaced. You may want to consider replacing the unit considering the amount it will cost to service existing unit. You will probably realize a benefit from higher efficiency since the government regulated minimum ratings have gone up since your old unit was installed, and it would be using a different type of refrigerant that will be more readily available in the future. You might look into some higher efficiency options like 16+SEER which also offer some comfort advantages. There are many articles on this site which discuss these options.

  17. R 22 was simple because it is one chemical . New refrigerant R 410 A complicated things way more , because it is a blend mixture of chemicals and every time things are complicated more problems are created .For one if you have small leak in R 22 SYSTEM you can simply add what leaked out and you are good to go , not so with 410 a leak means you should replace all refrigerant and that means vacuuming system and that means more time labor and money . REPLACING 6 POUNDS OF 410 CAN COST 3 times more THAN SIMPLY ADDING A POUND OF R 22 . R 410 is more unforgiving if proper procedures are not followed and in real world it is quite common – PEOPLE ARE IN A HURRY ,PEOPLE WORK UNDER STRESS OR ARE OVERWORKED or you have a boss idiot yelling “faster” all the time .So all those disaster stories about 410 are just a RESULT OF COMPLICATING THINGS , also having improper proportions or (% of ingredients ) in a 410 blend can be impossible to detect with gauges SO HERE IS AN EXPLANATION WHY SO MANY PEOPLE ARE DISSATISFIED WITH 410 .ANOTHER POINT HERE —-WORKING WITH 100 – 200 PSI HIGHER PRESSURES CERTAINLY IS MORE DANGEROUS BUT DO POLITICIANS CARE ABOUT THAT ?

  18. dear sir i have abig proplem in our air condition unit which ambient temperature to high froms45 to 55 c so as soon as the 4 hermatic comprossores work it failed although the refrigerant is ok so we want to chang refregerent 407 to R22 please advice me

  19. hi! I read all your question and answers , very good information.I just replace my outside unit a goodman 3 tons I had it for around 11 years. I just got a 31/2 same brand 14 seer but it’s not cooling like the r22 before, maybe could be the coil inside.I call the tech and he says that it could be the inside coil but he told that he is going to lower the speed of the fan that according to him you could set at a lower speed is that logical.

    • Hi Larry – it is difficult to tell exactly what is going on with your system without being on site with you but based on what you said in your post I could see how this might work. If it does not work out the contractor would need to keep checking for things like proper charge and air-flow, etc. Make sure to explain to the contractor exactly when (time of day or night) and the temperature and humidity at those times and also where (which rooms, etc.) you are not getting adequate cooling. I hope you have good luck with your HVAC project. Thanks for visiting our site!

  20. This is a bogus article.
    410-A is a Hydrofluorocarbon adding to global warming tremendously, just like 134A and CO emissions. Plus it uses more energy per cooling unit, having higher operating pressures than an old more efficient R22 system.
    As long as the R22 system is sealed anyone should keep it operating.
    Best options to replace R22 is a mix of R290 And R600, thats propane butane (Hydocarbon Refrigerant).
    Fridges in Europe and Asia run on R600 already. The mix is being used in aircons all over the world and in cars.

    • Hi Pete – thanks for your comments on R-410A. Here are just a few points for clarification.

      Since most of our readers are from the U.S. we develop a lot of our content in support of those systems and related regulations. For example, R-290 and propane are not currently approved for use as refrigerants in unitary AC systems in the U.S. due to concerns about flammability. In U.S. there are charge limits on equipment with R290 that limits its usage to very small applications. Also, R22 has also been banned from use in new equipment in the U.S. although it is still available for service.

      R-410A is the most common refrigerant used in the U.S. today and has only slightly higher global warming potential (GWP) than R-22 and much lower ozone depletion potential (ODP). The higher pressure R-410A refrigerant also actually has superior thermal properties relative to R-22. However, refrigerants are not the only factor in determining system efficiency. Other components like compressors, heat exchangers, expansion devices and controls all contribute to the rated efficiency of the system.

      We will continue to update information on this site as the industry begins to develop low GWP refrigerants for use in the U.S. Thanks for using our site.

  21. I just today had to replace my 17 yr old outside unit with the new 410a system. Actual dimensions of the unit are twice as big as the old one. I had to have the inside coil replaced 5 years ago and it is 410a compatible. This is actually the first time I have heard of the new systems. I hope I am not going to regret replacing the old unit instead of repairing it. I guess I will find out with the high temps we are having in Texas now.

  22. This article is a bunch of baloney. The sheer fact that R410a operates at much MUCH higher pressures ( as much as 1.6 times the pressure – that’s 160 % MORE ) means that the compressor will be doing a GREATER amount of work and that translates into MORE ELECTRICITY – the bottom line… higher electric bills.
    An R22 unit will run up to as high as 375 to 400 psi which is an incredible pressure to be sure, but a 410a unit will run as high as 600 psi or more ! This astronomically higher pressure is what contributes to a GREATER instance of refrigerant leaks and system failure. Neither the greater use and cost of electricity Nor the higher instance of system failure are benefits to using Refrigerant R410a ! it is a constant headache and a systematic disaster. In summary – a real snow job has been done to us all – consumers and maintenance people alike. Stay with R22 as long as you possibly can.
    Tell them you heard it From Jim in Buffalo who has 30 + years of experience working on Heating and Air Conditioning Units.

    • Hi Jim in Buffalo,

      The compressor in a system provides a differential pressure in order to cause movement of refrigerant within a system. This movement of the refrigerant allows for heat to be transferred from one desired location (coil) to another. This differential pressure is the true “work” on a compressor, and is described as the compression ratio. Compression ratio is defined as absolute discharge over absolute suction pressure, basically the ratio difference between compressor inlet and outlet pressures at atmospheric pressure (14.7).

      Air conditioning application conditions are currently defined by ARI as 45°/ 130°
      Using a pressure-temperature chart for R-22 this is: 76psig / 297psig
      Using a pressure-temperature chart for R-410A this is: 132psig / 474psig

      Therefore the compression ratio formula for each refrigerant is as follows:

      For R-22: (297+14.7) / (76+14.7) = 3.437

      For R-410A: (474+14.7) / (147+14.7) = 3.331

      An R-410A system actually has a lower compression ratio, when compared to R-22 at the same ARI conditions. So even though the pressures are higher with R-410A, the pressure ratio from suction to discharge is lower than with R-22.

      Hope this helps to clear things up,

    • I AGREE R 22 was simple because it is one chemical . New refrigerant R 410 A complicated things way more , because it is a blend mixture of chemicals and every time things are complicated more problems are created .For one if you have small leak in R 22 SYSTEM you can simply add what leaked out and you are good to go , not so with 410 a leak means you should replace all refrigerant and that means vacuuming system and that means more time labor and money . REPLACING 6 POUNDS OF 410 CAN COST 3 times more THAN SIMPLY ADDING A POUND OF R 22 . R 410 is more unforgiving if proper procedures are not followed and in real world it is quite common – PEOPLE ARE IN A HURRY ,PEOPLE WORK UNDER STRESS OR ARE OVERWORKED or you have a boss idiot yelling “faster” all the time .So all those disaster stories about 410 are just a RESULT OF COMPLICATING THINGS , also having improper proportions or (% of ingredients ) in a 410 blend can be impossible to detect with gauges SO HERE IS AN EXPLANATION WHY SO MANY PEOPLE ARE DISSATISFIED WITH 410 .ANOTHER POINT HERE —-WORKING WITH 100 – 200 PSI HIGHER PRESSURES CERTAINLY IS MORE DANGEROUS BUT DO POLITICIANS CARE ABOUT THAT ?

  23. R410 is less efficient and more damaging to the ozone than R22. That is fact! The ever looking out for the little guy Democrats did it for the money and served you a heaping helping of syrupy feel good BS. And it works every time.

    • “R410 is less efficient and more damaging to the ozone than R22.”

      I’m inclined to agree about lower efficiency, but R410a has absolutely no effect on ozone since it’s an HFC. On a side note, it’s also debatable whether R22 ever did any ozone damage. Check out this URL: https://wattsupwiththat.com/2013/12/11/at-agu-nasa-says-cfc-reduction-is-not-shrinking-the-ozone-hole-yet/

  24. Well my Air conditoning unit went out last week it cools at first then 2nd time around it warm air only. I had a tech come out and check to see waht was wrong. Needless to say after he inspected the unit for a out 30 min trying to figure out what was wrong. He noticed that the main unit upstairs was an R22 the problem that was brought up is that the compressor is a 410 A this is a newer home we bought all he could say was if our AC was working properly. Well we were like it cooled it was working until now. So now we have to get a hold of the builder and installer get it fixed and hopefully this problem is solved.

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