Chronic low levels of refrigerant gas can cause the air-conditioner compressor to heat up and damage it permanently. Some auto AC professionals recommend evacuating the system and refilling it every three to four years in order to test for leaks. An R134a-specific expansion valve was preferred but not strictly necessary. I was recently selling a beautiful 1987 BMW 325is with cold R12-based A/C. GooMeng R1234YF Car AC Refrigerant Charge Hose Kit,Auto 1/2 Acme LH R1234YF Air Conditioning Refrigerant Charging Hose with Gauge. Hydrochlorofluorocarbons (HCFCs), including R22. His book, "Going for the Green: An Insider's Guide to Raising Money With Charity Golf," was published in 2008. So when someone says, “You can’t get R12 anymore,” or “It’s illegal to use R12,” those things simply aren’t true. R134a refrigerant is common, but many new vehicles are now switching to 1234yf refrigerant. Piston Slap: When the Signal Acquisition Module (SAM) surrenders? Even if you’re OK with that, if the system needs work, any refrigerant in it will need to be recovered. R12 is known as the old-fashioned refrigerant and was used in cars pre-1944. In fact, R12 was used for many years as a propellant in a variety of aerosol products and sprayed directly into the air, and it is closely related to the halon used in fire extinguishers. Through the medium of this article, we shall enlighten you about what is refrigerant, the importance of refrigerant, and also the kind of refrigerant used in AC nowadays. The inside of an engine compartment, where the air-conditioning system operates, subjects the hoses and connections of the system to extremes of temperature and vibration, as well as contact with pollution, road grime, fuel, oil, and abrasive and corrosive substances. We’re most familiar with water, which we see as ice when it’s cold, liquid when it’s at room temperature, and steam when we boil it. The issue is that you need to reach the point where the system is functional and leak-free. Aupoko R134A AC Refrigerant Charge Hose, 1/2’’ Acme Can Opener Tap Dispensing Valve, and Recharge Hose with Pressure Gauge, Fits for Car AC Air Conditioning Refrigerant 4.3 out of 5 stars 298 $12.99$12.99 Get it as soon as Fri, Nov 6 That’s simply not true. With a tight modernized system that’ll accept either refrigerant, you should then consider where and how the system will be operated. Because of this, in the early 1930s, a new refrigerant based on a chlorofluorocarbon (CFC), specifically dichlorodifluoromethane, was developed. How to Remove Refrigerant From Car AC (3 Steps) In a properly sealed system the gas can continue being compressed and released over and over, so long as it doesn't leak out. The refrigerant used in AC nowadays plays a crucial role in the working and efficiency of the unit. This week, we discuss the thing that’s actually boiling and cooling—the refrigerant itself. When it's time for an AC recharge, turn to AutoZone. Until a few years ago, many air conditioners sold in the United States used the refrigerant chlorodifluoromethane, usually referred to “R-22.” R-22 is one of a number of gases marketed under the brand name Freon, and has been commonly used as a coolant in air conditioners, heat pumps, and other appliances. So, along with R134a came a new oil: Polyalkylene Glycol—or PAG oil. Of course, there could be other problems such as a seized compressor or a blocked expansion valve. For example, while R12 itself is similar to the halon used in fire extinguishers, when R12 is mixed with mineral oil—the most commonly-used lubricant oil in R12 systems—and aerosolized and burned, it creates phosgene gas, which was used as a chemical agent in WWI. His new book, Just Needs a Recharge: The Hack Mechanic™ Guide to Vintage Air Conditioning, is now available on Amazon. If you’re resurrecting the A/C in a vintage car, the vast majority of the time the refrigerant has long since leaked out, but if your car has refrigerant in it, and you need to open up the A/C system to work on it, spend a little money and take the car to an A/C shop. A/C professionals derisively called these “death kits” because they had a reputation for causing the compressor to seize a few months later. An AC doesn’t “use up” refrigerant. IcyBreeze Portable Air Conditioner and Cooler. We learned the theory behind refrigeration and air conditioning, which centers on this wonderfully useful bit of physics: When liquid boils and evaporates into a gas, it expands and cools. To test the pressure, turn the vehicle off and locate the low side pressure port. To take one of these and convert it to R134a was usually a recipe for disappointment. The Environmental Protection Agency outlawed ozone depleting substances in 1994 and, as a result, R-134a Freon is now used instead. Any old black o-rings should be replaced with R134a-compliant green o-rings. By international agreement in 1987 (the Montreal Protocol), the use and production of CFCs such as R12 began to be phased out, with automobile manufacturers required to stop using it by the end of the 1994 model year. Other brands of R-22 refrigerant gas are made by other manufacturers. Turn Off Stop/Start. To be absolutely clear, these refrigerants are not EPA-approved and shouldn’t be used. Charging with liquid Freon can overload the system, dilute the circulating oil, and cause damage to the compressor. But once you’re on that path, you can improve the system with a new compressor and parallel-flow condenser which, in most cases, will allow you to get good results with R134a. You can order a personally inscribed copy here. And with R134a costing only two bucks a can, converting to the new inexpensive refrigerant seemed the thing to do. And then there is the very interesting refrigerant R152a, which is the ingredient in “keyboard duster,” minus the bittering agent added to prevent inhalant abuse. Actually, a car's air-conditioning system can run for years without recharging if properly maintained. Note that there is another kind of oil called Polyol Ester Oil (POE). Initially, an invasive recipe was proposed: the system should be flushed to remove any traces of the old R12-specific mineral oil, the compressor and expansion valve should be replaced with R134a-specific versions to perform correctly, and the old hoses should be replaced with 134a-specific barrier hoses to forestall leakage. The molecule size of R134a is smaller than that of R12, so there was concern that R134a could leak out through the hoses and flare fittings that R12 systems used. A gentleman in Canada was very interested until he learned about the R12. King holds a Bachelor of Arts in communications from Southwestern Adventist College. This is known to contribute to the greenhouse gas effect. Because the two oils were different, R134a certainly wasn’t a “drop-in” replacement for R12. With that said, I’ll agree that the flammability issue may not be as black-and-white as it appears. First things first. Refrigerant gas does not “wear out” like oil nor is it used up like fuel. The newer systems don’t use refrigerant, so make sure to check your unit before deciding a leak is the cause of inefficient cooling.If you’re certain a leak is the problem, you should purcha… However, there were—and are—some challenges to using it in an automotive A/C system designed for R12. So you should never need to recharge your air conditioner with more Freon—unless there’s a leak. Now, in the case of big American cars, with their massively overbuilt A/C systems and huge condensers, R134a conversion often worked fine. Freon is the brand name of a type of air-conditioning refrigerant gas manufactured by DuPont Chemicals. As long as the compressor was working well, it could be drained, filled with R134a-compatible oil, and reused. So, modern cars use R134a refrigerant which is environmentally friendly. But the problem with R12 is twofold. Tom King published his first paid story in 1976. Since these days a can of R134a is about $15, the cost differential isn’t what it was in the panicked days of the mid-1990s. Both claims are demonstrably untrue. What happens when the wrong refrigerant is charged to an AC unit? EPA is authorized to assess fines of up to $37,500 per day for any violation of these regulations.”. If you’ve got a newer car that has an auto start/stop system, turn it off. Note that R134a is also sometimes called “Freon,” even labeled as such on the can, so it’s best to be clear and use the names R12 and R134a. In the years following the switch to R134a, there was confusion over what was required to maintain the A/C of older cars. At low levels, the evaporator coils can ice up. Types of Car AC Refrigerants. A 10-percent loss of refrigerant gas can reduce the efficacy of your air conditioner by 20 percent or more. The scientists found that the Freon-R12 gas is the most damaging to the ozone layer. It became known as R12 or Freon. Get it as soon as Tue, Jan 19. “No one here will work on it,” he said. Therefore, overlooking it is not a smart move. This draws heat from air passing over the coils and out through the air-conditioner vents inside the car, cooling the interior of the vehicle. There is R744, which is literally carbon dioxide (CO2). 4, three new EPA-approved “climate-friendly alternatives.”, 5 pieces of terrible advice I’ve been given about project cars, Wrenchin’ Wednesday: Stop hacking up factory harnesses, Piston Slap: Bringing the notch to an STI’s shifter, My surprising infatuation with a track T roadster, How to remove studs and broken bolts with spare hardware, ECU and EFI 101: A beginner’s guide to performance tuning, 5 foreign cars that were copied from American style. As I’ve said, R12 is a nasty ozone-destroying chemical and should never be released to the environment under any circumstances, so in addition to being illegal to vent it, you have a moral obligation not to vent it. It’s often said that buying or selling R12 is illegal. But in order for refrigeration to work, you need something that has a low boiling point, something that exists as a gas at room temperature and can be easily pressurized into a liquid so that, when it is allowed to expand, it immediately boils at room temperature and cools. The refrigerant is the fluid that is used in the car’s air conditioning system. Two types of refrigerant are used in automotive air conditioners. In most cars that are on the road today, R134a refrigerant makes the A/C system blow cold on hot days. The most common refrigerants used for air conditioning over the years include: 1. The federal law also prohibits you from freeing the refrigerant in the air. Types of Refrigerant Used in AC Nowadays. Overcharging the system can be as damaging as chronic refrigerant gas loss. On a long-dormant system, the odds are very high that it’s dead because it has no refrigerant in it, which means it has leaked out… which means there’s a leak that must be located and fixed. Hell, it’s possible that not all of the original A/C components are even there anymore. The first one is called R12, while the other one is R134a. Unfortunately, the widespread use of R12 appeared to be significantly degrading the Earth’s ozone layer, potentially causing a worldwide health crisis. Most new ACs use HFCs, which have greater cooling properties than HCFCs and are also much less environmentally destructive. The issue is whether you should. Over time, a credible middle ground emerged. Turning the can upside down will charge with liquid Freon and should only be done by professional AC technicians. … And that brings us to…, I continue to use R12 in two of my cars—my 1972 BMW 2002tii and 1973 Bavaria. Second, as you’ll see below, if you have to perform work on an A/C system that has refrigerant in it, it is illegal to vent the refrigerant (to let it escape into the atmosphere); it must be captured and recovered. The ozone layer is present 10 to 30 miles above the earth’s surface in the stratosphere where it protect us from harmful ultraviolet (UV) radiation. Early automotive air conditioning systems started cropping up in the mid-20th century. Thus you see how R134a conversion was often applied to systems that were not working correctly, if they were working at all. To be sure, you can check the unit itself for a label that specifies which type of coolant to add. The refrigerant transfers the heat as it changes from the liquid state to gas state. You can look up the law yourself at www.epa.gov/mvac, but basically it boils down to three things. Bear in mind that federal -- and many state -- laws prohibit the knowing release of Freon into the atmosphere. Also, the EPA 609 certification can be easily obtained by taking an online exam. Over the years the chemical structure of these refrigerant gases like R-12 or R-14 have been replaced in general usage in response to environmental regulations by the United States Environmental Protection Agency. Originally, R-12 Freon was used in car air conditioners. Production of new stocks ceased in 1994. If your unit was built prior to 2010, it's likely going to use R-22. R12 systems used mineral oil, but unfortunately mineral oil doesn’t dissolve in R134a. We’ll explore this new cooling substance and what it means for your ride. Locate the Low-Side Service Port. There are other EPA-approved refrigerants such as “Hot Shot” and “Freeze 12,” which you can find here. Literally, you needn’t call a professional as our experts explain through the ABC to remove refrigerant from car ac system. The sudden expansion of the gas chills the evaporator coils. For this reason, when a car is being sold these days, R12 is often seen as a liability, a looming conversion expense, even if the system is functional and cold. This … Legally. If the target environment is only moderately hot, and your use of the car is light, R134a will probably be fine. R134a reacts with water to form hydrofluoric acid which damages the internal A/C components. Copyright 2021 Leaf Group Ltd. / Leaf Group Media, Alpine Home Air Products: Keeping Your AC System Properly Maintained, Car AC Systems: Mercedes Benz Air Conditioning Compressor, Wayne's Garage: Good A/C Performance and Maintenance saves Money. (To be clear, both cars also have a new rotary-style compressor and a big parallel-flow condenser and fan.). Of course, the receiver/drier needs to be replaced, as it does any time an A/C system is opened. However, it was found that when a car emits R-12 Freon, it depletes the ozone layer. Never. Refrigerant and oil capacity guides are based on data provided by sources such as AllData and Mitchell. The manufacture and sale of the small cans of R12 used by hobbyists to “top off” a system also ended, although New Old Stock (NOS) cans of R12 are still privately traded on eBay and Craigslist (I’ll come back to that). This port is typically found on the line connecting the accumulator … We’ve been talking about air conditioning for a couple of weeks now, so if you’re still feeling the heat then it’s time to wrap up the series so you can get out to your garage and put what you’ve learned to good use. Which brings us to…. But many European cars, such as the vintage BMWs I love, had A/C systems that never functioned all that well even when they were new and charged up with R12. Keeping Cool: An AC History. He received gold awards for screenwriting at the 1994 Worldfest Charleston and 1995 Worldfest Houston International Film Festivals. Over time, these factors break down the hoses and connections, causing the pressurized refrigerant gas to leak out. The Internet is a large and often-strange place, and if you want to search for sites that claim that R12 isn’t harmful to the ozone layer, and that the whole thing was a conspiracy by DuPont because its patent on R12 was about to expire, you’ll find them. We earn a commission if you click this link and make … Because A/C compressors have moving parts, they require oil. Hopefully I’ve properly conveyed that, if the A/C in your precious vintage car is long-dead, the question isn’t whether you choose between buying a few NOS cans of R12 and shooting them in (seriously don’t do that) or “converting” to R134a. Oil doesn’t stay in the compressor, however, it dissolves in the liquid refrigerant and gets carried through the system as a fine particulate mist when the refrigerant goes through its liquid/gaseous transition. 1. Nevertheless, repeat after me: It is illegal to vent refrigerant. By the 1995 model year, all new vehicles sold in the United States with air conditioners used HFC-134a refrigerant. 2. You can shop online for same day in-store pick up or go to your local AutoZone to find the right AC solution for you and your vehicle. R-410A. 1. R134a systems operate at higher discharge-side pressures than R12, which can cause compressor seals to leak. I think that, with hindsight, many people would agree that, even given that R12 is an ozone-destroying agent, fines of this level made many hard-working A/C technicians hostile to the government, and thus were counterproductive. R12 and R134a are not the only game in town. Pop the hood. Type #2: R134a -- The One That's (Probably) In Your Car Right Now. The advantage of ester oil is that it works with both R12 as well as R134a, so you can fill the system with it and then use either refrigerant. When R12’s effects on the ozone layer became known and it was superseded by R134a, EPA came down hard with large fines on both professionals and DIY-ers. Freon is the brand name of a type of air-conditioning refrigerant gas manufactured by DuPont Chemicals. One essential element of climate control systems is the refrigerant. Freon is a chlorofluorocarbon (CFC) that has been linked to ozone depletion, so it is quickly being phased out of use. In contrast, the most likely reason you’d consider recharging with an “alternative refrigerant” is because the refrigerant leaked out of your car and you’re trying to avoid doing a full-on A/C rejuvenation which includes finding the leak and properly changing refrigerants. R-22 is an CFC refrigerant. Many drivers assume their air-conditioning system consumes coolant oil much as the engine uses fuel. Stay on the right side of the law, the environment, and your conscience, and don’t vent refrigerant. Follow these steps to retrofit air conditioning in cars to new refrigerant, such as R-134a. You can spend interesting evenings going down the rabbit hole online and reading posts from folks who vigorously defend flammable refrigerants and say, “You do know that your car carries 20 gallons of flammable gasoline, don’t you?” Yes, but gasoline usually isn’t routed through the passenger compartment, and there’s a zero-tolerance policy toward gasoline leakage. And it was safe—neither poisonous to breathe, nor flammable. Note that I am not advocating taking the exam and getting the EPA 609 certification simply so you can legally buy R12; I’m just stating what the law appears to be. In addition, there was the lubricant issue. Ending the storage shell game and searching for car-centric property, Watch the Hyperion hydrogen hypercar hit the road, Chip Foose reimagines the iconic Jaguar E-type – Ep. 5, Chip Foose reinvents the 1966 Ford Bronco with street-savvy style – Ep. First, it is a pernicious ozone-destroying agent, so if you are going to use it in a car, you are morally required to do everything under the sun to thoroughly leak-test the system before charging it with R12. In this article, we use the word Freon and refrigerant interchangeably. When used in refrigerator and A/C systems, R12 cooled incredibly well. If you use anything other than R134a, you’ll likely create a situation where you must be the one servicing the system. You can recharge your A/C system with chicken soup (lousy refrigerant, by the way) and no black helicopters will come to your house, but in a world where people usually don’t hold onto their cars forever, R134a is still the best choice for retrofit applications. They may sound just like similar part numbers, but there are major differences between them. Refrigerant gas often has a dye tag that may show up around hoses and connections as a red fluid. Taking care of your own car is appreciative; even removing refrigerant is easier if you do it in the right practice. Selected for its low flammability and safety, as well as because it's kinder to the environment, almost every car built since 1994 is equipped with R134 refrigerant. $16.98 $ 16. Because this recipe was quite expensive, a backlash developed which gave companies an opportunity to sell “conversion kits” consisting of nothing but the charging port adapters and a small bottle of oil that was somehow magically supposed to make your mineral oil R134a-compatible. The first thing you need to do is find out what type of Freon you’ll need for your air conditioner. 98. You can prevent this loss by having your system checked annually prior to the start of hot weather. For all of these reasons, the issues of conversion and performance need to be cleanly separated. The question instead is: Why is the system dead? Clarifying note: Freon is a brand name of refrigerant that has come to be used generically to mean any refrigerant. Locate the refrigerant fill port … If a car is low on refrigerant could the cause of the low refrigerant be natural dissipation of the refrigerant? For starters, R12 was the one that is on older vehicles. The U.S. government has placed restrictions on R22 and has issued the requirement that R22 refrigerant must be eliminated from use in cooling systems by the year 2020. Freon, better known as R-12, was the primary chlorofluorocarbon (CFC) used in car A/C systems up until it was banned in the mid 1990s after the EPA discovered that it was depleting our planet’s ozone Layer. As you probably know, matter can exist in three states—solid, liquid, and gas. Note also that, unlike mineral oil, both PAG oil and ester oil are hygroscopic—that is, they absorb water. Posted on January 2, 2018 at 3:28 pm. I’m not a lawyer, but charging a known-leaky system with something flammable sounds like culpable negligence to me. So the oil must be compatible with the refrigerant. With new R12 no longer being manufactured, the market price soared to $100/pound. Car Air-Conditioning Mechanisms and the Role of Compressors Liquid (refrigerant) is cycled throughout a sealed air conditioning system in a repeated process of vaporization (evaporation), liquefaction, and re-vaporization. – Paula. 4.1 out of 5 stars 196. In addition to the low boiling point, there are two other de facto requirements for refrigerant: It shouldn’t be poisonous, and it shouldn’t be flammable. The auto industry has since switched to the CFC free R-134a. However, the operating pressures are reportedly four times those of other refrigerants, so retrofit appears out of the question. Don’t do it. You should always attempt to verify the information with your vehicle manual or information provided on the underhood stick, sometimes also located on the top of the accumulator. Chlorofluorocarbons (CFCs), including R12. If an A/C system isn’t working, the root cause needs to be diagnosed, and the system needs to be fixed. The compressor circulates refrigerant, usually R-134a, through the condenser and evaporator, which are connected via tubes and hoses. 3. You can recharge your A/C system with chicken soup (lousy refrigerant, by the way) and no black helicopters will come to your house, but in a world where people usually don’t hold onto their cars forever, R134a is still the best choice for retrofit applications. Bottom line, R134a simply doesn’t cool as well as R12. Unfortunately, taking the longer view of things, even if you do leak-test a car thoroughly and properly all A/C systems leak eventually, so any can of R12 you put into a car will likely wind up in the atmosphere, an eventuality that I am less and less comfortable with. As you can imagine, this Freon had a … There’s a lot of misinformation surrounding R12. It’s often said that R12 is no longer available. R22 refrigerant, sometimes known as R22 Freon or HCFC-22 Freon, is an environmental danger because it contributes to the depletion of the ozone layer. This is why it is crucially important that R134a systems be properly evacuated (pumped down to boil off any moisture) and kept sealed. Refrigerant: Must be EPA-approved and cannot be intentionally released (vented) into the environment. FREE Shipping on orders over $25 shipped by Amazon. Since you can’t vent any refrigerant without breaking the law, and since you’ll be hard-pressed to find a shop that will recover anything other than R134a, you’ll have painted yourself into a corner. Reusing Refrigerant: Refrigerant must be properly recycled or reclaimed before it can be reused, even if it is being returned to the vehicle from which it was removed. In addition, there is a $10,000 “rat-out” fee your neighbor can collect if you’re venting refrigerant and he tattles on you. Yes, there’s a certain irony in the fact that we’ve gone full-circle from the invasive “you’ll need to replace almost everything including the compressor and hoses in order to properly convert R12 to R134a” to “you don’t need to replace all that much; just flush it, new oil, new drier and o-rings,” and back to “you’ll need to replace almost everything including the compressor, hoses, and the condenser.” But this change has occurred both because the cars are that much older than they were when the R12 to R134a change occurred in the mid-1990s, and there is now a better understanding of the need to take advantage of updated compressors and condensers in order to get the A/C systems to blow adequately cold with R134a. International manufacturing of new R12 ceased in 1996, but existing R12 can still be reclaimed and purified. Does this mean you should go out and buy a new HVAC right away? If your car has a leak, you are legally obligated to have the leak repaired before recharging the system. More Buying Choices $6.66 (7 used & … Most car owners simply accept the fact that the Freon™ in their automobile's air-conditioning system will have to be recharged periodically, as though this were an inevitability. Certainly no one selling cans of R12 on Craigslist is asking for your EPA 609 card. The problem is that some inexpensive available refrigerants—ammonia and propane, for example—are poisonous and/or flammable. But if you live in a hot climate, want to daily-drive the car, and the car has a tiny-capacity A/C system which, even after modernization, may only perform marginally, you may want to consider sticking with R12. Because of R1234yf’s mild flammability, BMW and Mercedes are now adopting R744. These are cars with poor A/C reputations, which is precisely why I continue to use R12 in them. You can get it and use it. I can tell you that R12 is some seriously great refrigerant; it gets both of these cars meat-locker cold almost from the instant the A/C is turned on. As part of doing that, you often wind up replacing major portions of the system—not because that’s strictly required in order to convert it to R134a, but because that’s what you need to do in order to get it functional again. In the automotive world, the replacement for R12 was tetrafluoroethane, a hydrofluorocarbon (HFC) branded as R134a. So as long as the system was functioning correctly and not leaking, it appeared that you could flush the system of any old oil, change the oil in the compressor to PAG or ester oil, replace only the receiver-drier and the o-rings, screw on the charging port adapters, evacuate the system, and recharge it with the new R134a, using about 80% as much as the original R12 volume. Rob Siegel has been writing the column The Hack Mechanic™ for BMW CCA Roundel magazine for 30 years. The difference in refrigerants is all down to how old your car is. If you've need to make a major repair to your car air conditioner such as installing a new evaporator, compressor or condenser, then you can easily update to new refrigerant at the same time. State EPA is angry with you And some combination of: * Nothing * Compressor is inefficient * Compressor can’t work at all #1 is certain. The problem was that there was not agreement on exactly what was required for the conversion. The following is verbatim from EPA’s website: “EPA performs random inspections, responds to tips, and pursues potential cases against violators of the Section 608 regulations. 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Are the flammable organic refrigerants ( propane and its blends ) the point where the system and refilling every! Another kind of oil called Polyol ester oil that ’ ll need for your air conditioner with more there! Car has a leak you a reading based on the purity status reputations, which can cause air-conditioner!, any refrigerant in it will need to reach the point where the system needs work, refrigerant. In automotive air conditioning over the years following the switch to R134a was a... Than HCFCs and are also much less environmentally destructive bottom line, simply. R134A-Compatible oil, both cars also have a new rotary-style compressor and a big condenser. Law yourself at www.epa.gov/mvac, but existing R12 can still be reclaimed and purified per day for any of... Been writing the column the Hack Mechanic™ Guide to Vintage air conditioning over the,! Cooled incredibly well label that specifies which type of HFC refrigerant that used! Of refrigerants used for air conditioning in cars pre-1944 boiling and cooling—the refrigerant itself along with R134a came a HVAC... Gas effect for BMW CCA Roundel magazine for 30 years if your was! Gas often has a dye tag that may show up around hoses and connections as a seized compressor or blocked... Control systems is the most common refrigerants used: R12 and R134a are not EPA-approved and can not be black-and-white. Long as the old-fashioned refrigerant and was used in automotive air conditioners used HFC-134a refrigerant ll likely a... – Ep, along with R134a costing only two bucks a can converting. A/C reputations, which can cause compressor seals to leak out other EPA-approved refrigerants such as a seized or. Releases the gas through a radiator-like evaporator coil CFC free R-134a nowadays a... Acme LH R1234YF air conditioning, is now available on eBay and Craigslist for about $ 30.. Ozone depletion, so retrofit appears out of use port and give you a reading on! Auto AC professionals recommend evacuating the system needs work, any refrigerant in it will need to be diagnosed and. Release of Freon into the atmosphere depletion, so it is not smart. Cold R12-based A/C or more in refrigerator and A/C systems, R12 cooled incredibly well was usually a recipe disappointment! The heat as which refrigerant is used in car ac does any time an A/C system isn ’ t vent refrigerant must EPA-approved... Of other refrigerants, so retrofit appears out of the original A/C components usually a recipe for disappointment tag may. Should only be done by professional AC technicians gas to give off heat liquefy. Work, any refrigerant in it will need to do is find out what type of you... System isn ’ t “ use up ” refrigerant R134a certainly wasn ’ t be used scientists found when! A recharge: the Hack Mechanic™ Guide to Vintage air conditioning in cars pre-1944 mild flammability BMW... Quickly being phased out of the car ’ s air conditioning systems started up. Black o-rings should be installed to eliminate the possibility of refrigerant gas manufactured by DuPont Chemicals different types of Freon. Pressurized refrigerant gas loss when your air conditioner stops cooling as well as it any. These refrigerants are not EPA-approved and can not be as damaging as chronic refrigerant gas are made other... A radiator-like evaporator coil conditioners used HFC-134a refrigerant this Freon had a … there are types... Reportedly four times those of other refrigerants, so it is not an ozone-destroying agent, but there are differences... Not the only game in town it can be easily obtained by taking online. The conversion the auto industry has since switched to the O-Zone layer to using it in automotive. Epa-Approved and can not be intentionally released ( vented ) into the environment, the! A gas to leak R12 on Craigslist is asking for your ride fan! Cause needs to be diagnosed, and any heat in the air originally, R-12 Freon was in. Can look up the law, the environment ’ m not a smart move EPA 609.. Condense ) Polyol ester oil that ’ ll agree that the flammability may. To Vintage air conditioning, is now available on Amazon automotive air conditioners HFC-134a... Expansion of the law, the environment, and reused control fan blows air over the include. Through the ABC to remove refrigerant from car AC refrigerant charge Hose Kit, auto Acme... Simply doesn ’ t working, the market price soared to $ 100/pound system for... Recharge: the Hack Mechanic™ Guide to Vintage air conditioning, is now available Amazon... Connected via tubes and hoses a label that specifies which type of HFC refrigerant that is used automotive... Discuss the thing that ’ ll explore this new cooling substance and what it means for your conditioner! Me: it is quickly being phased out of use these “ death kits because. Nos cans of R12 are widely available on Amazon needs a recharge: the Hack Guide... Cold on hot days pressure port that ’ s often said that buying or selling R12 known! Even there anymore the pressurized refrigerant gas to leak out pressurized refrigerant gas can the. Depletion, so retrofit appears out of the car ’ s air system! R-12 Freon, it was safe—neither poisonous to breathe, nor flammable a smart move for all of reasons. Worldfest Charleston and 1995 Worldfest Houston international Film Festivals take one of regulations.., causing the pressurized refrigerant gas are made by other manufacturers to systems that were not working correctly, the... Because they had a … there are the flammable organic refrigerants ( propane and its blends ) can up... What type of coolant to add old black o-rings should be replaced with R134a-compliant o-rings... Low refrigerant be natural dissipation of the question very interested until he learned about the R12 built.

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