Receiving Helpdesk

what happens if you mix r12 with r134a

by Jeromy Bins Jr. Published 3 years ago Updated 2 years ago

R134a systems work at higher discharge-side pressures than R12 systems, which could lead to compressor seals leaks. Additionally, since R134a is composed of much smaller molecules, it has a greater chance of leaking from an R12 system.

Full Answer

What happens if you put R134a in a R12 system?

What happens if you put r134a in a r12 system? The oils are different and not compatible and can cause an explosion. R134a is also a smaller molecule than r12 so if you HAD a small leak with r12 that you did not fix you have an even bigger leak now.

Can you put R12 in a R134 system?

As R12 used a different oil that was not fit to be used with R134a, the replacement was not that simple. But if your R12 system is working well and not leaking, you can still use it. The problem arises when the system becomes old enough, and the refrigerant starts to leak due to the weary case.

How to put R134 into a R12 system?

  • Recover all R12 and dispose of it correctly.
  • Remove all traces of the mineral oil.
  • Re-charge the lubricant wit a polyol ester lubricant.
  • Replace the expansion device with the appropriate device.
  • Evacuate the system and replace the filter drier with a compatible drier.
  • Re-charge with R134a to the correct charge by superheat, subcooling and sight glass.

More items...

Can I add R134a directly to my R12 system?

Can I add R134a directly to my R12 system? No. Federal law prohibits topping off an R12 system with a different refrigerant. Your options are to locate some R12, however you must be certified to purchase, and add it with an R-12 recharge hose.

Which is colder R12 or R134a?

R12 can blow 6 to 7 degrees cooler than R134a and is 15% more efficient. ... As a result, a perfectly functioning R12 system will blow colder and reduce temperatures faster than a system that was converted to R134a.

Can you mix R 12a and 134a?

Just adding R12a to a 134a system doesn't work very well because a 50/50 mix is very inefficient. If you don't have a vacuum pump, you can still make it work though. First warm up the car with the air on and then turn it off.19-Sept-2012

What happens if you mix R22 and R134a?

It will make the system operate ineffectively and possibly ruin your compressor. Sure. There will be no adverse chemical reactions in mixing R22 and R134A.

Can R12a mix with R12?

Adding R12a refrigerant to the R12 system: It's basically the same procedure as adding R12 except you must screw on the R12-to-R12a quick-connect adapter fitting pictured below (included in the kit) to the LOW suction service port first. The adapter fitting has it's own Schrader valve internally, so no gas will escape.07-Jul-2016

How do I switch from R12 to R134a?

How to Convert an R12 to the R134a SystemDiscard any R12 refrigerant still in the system by taking your vehicle to a licensed air-conditioning professional. ... Open the engine compartment of your vehicle. ... Push the high side retrofit R134a fitting over the old fitting and use a wrench to tighten it.More items...

Is it illegal to mix refrigerants?

Due to the destructive effects of the compositions of refrigerants on the environment, the EPA has banned the use of certain refrigerants altogether. These banned refrigerants were to be replaced with new ones, and mixing refrigerants became totally illegal.19-Oct-2017

What happens if you put 134a in a 1234yf system?

If you were to put R1234yf in a system designed for R134a, it looks like you'd end up with about a 10% loss of cooling capacity, but putting R134a into a R1234yf system would be a wash. It appears R1234yf oil is compatible with R134a (but not vice-versa), so shouldn't be a problem there.16-Jun-2017

What happens if you mix freon?

Indeed, mixed refrigerants can cause increased system pressures and temperatures, resulting in ineffective compressor cooling, reduced cooling, possible compressor damage, metering device malfunction, and inadequate oil return to the compressor, said Eugene Silberstein, director of technical education and standards, ...22-Oct-2018

How is R134A any Different from R12?

This is an important question that you might be wondering. What makes them so different from each other that they cannot be mixed under any circumstances? They are both refrigerants and play the same part in cooling down your engine and vehicle, but they have a very different molecular chemistry.

How Can I Purchase R12?

It’s difficult to source R12 since it has been banned for years and is usually in scarcity. You must be certified to purchase R12, and you must also have an R-12 recharge hose that will help you load it into your vehicle. This certification is the EPA 609.

What Happens If You Put R134A in a R12 System?

As we mentioned, the biggest risk that you would run from mixing R134a and R12 is an explosion. Needless to say, that’s dangerous and completely unnecessary. You can safely avoid this catastrophe by simply not experimenting with combinations that are deemed illegal.

Is R12 illegal?

R12 is not illegal, but mixing it with R134a is. This is a distinction that should be made clear, since many people assume that R12 itself is an illegal substance, just like a narcotic.

How to Convert an R12 to an R134a System?

If we’ve sufficiently scared you away from every mixing of R12 with R134a, don’t worry we’re not going to leave you on that note!

Conclusion

Mixing R134a in an R12 system is a big no-no, and we hope that we dissuade you from ever trying this dangerous combination. You’re left with two options — to source R12 after getting an EPA609 certification from the internet and damage the planet, or to make the easy switch to R134a by cleaning out your R12 system and getting an R134a retrofit.

What happens if you mix R12 and R134A?

What happens if you mix r12 with r134a? The oils are different and not compatible and can cause an explosion. R134a is also a smaller molecule than r12 so if you HAD a small leak with r12 that you did not fix you have an even bigger leak now. R134a is so much smaller than r12 that it will leak right through the older hoses used for r12.

How to convert R12 to R134A?

How to Convert an R12 to the R134a System. Discard any R12 refrigerant still in the system by taking your vehicle to a licensed air-conditioning professional. Open the engine compartment of your vehicle. Push the high side retrofit R134a fitting over the old fitting and use a wrench to tighten it.

Can you use a different refrigerant on an R12?

No. Federal law prohibits topping off an R12 system with a different refrigerant. Or you can convert the system using one of our R134a retrofit kits, that will allow you to now add 134a refrigerant to your automotive air conditioning system.

What happens if you mix two vacuum cleaners?

If you mix the two there will be a chemical reaction which creates a whole different chemical which you can't use. Also i heard the two might gel up ruining your compressor and/or clogging up your entire system. If you dont have a vacuum and cannot DIY properly, then dont DIY and go take it to a shop. Might save you a whole load of hassle.

Can you add R12A to 134A?

Just adding R12a to a 134a system doesn't work very well because a 50/50 mix is very inefficient. If you don't have a vacuum pump, you can still make it work though. First warm up the car with the air on and then turn it off.

What oil does a R-22 use?

First, they are not compatible refrigerants, they use different lubricating oils. R-22 will typically use mineral oil lubricant, and R-134a will use POE (polyolester) oil. Also, they work at different pressures. If you add R-134a to an R-22 system, you will blow the compressor.

What is R22 oil?

R22 is a virgin refrigerant meaning it has a constant set of values based on temperature and pressure. 134a is a blended refrigerant and uses a glide slope to determine values.

What oil is used to compress a freon?

The compressor used to compress the freon would need to have a fossil based oil for lubrication on R22, and Ester oil for the R13A. The 2 freon's are of 2 different temperature ranges also. 300 views. ·.

When will R-22 be phased out?

The plan is set to completely phase out the R22 refrigerant as well as the common refrigerant blends that contain HCFC-22 by the year 2030. This includes the R-401A, R-402A, R-408A, R-409A, R-414B, and the R-502A refrigerants. (There are actually a total of 34 HCFCs being phased out).

Can you use a 134A charger with a 22?

No you cannot. By law each system has to have a different charging port to reduce the possibility of cross contamination. Plus 134a is not as efficient as 22. What is the difference between R22 and R134a

Is R22 a virgin oil?

No. These behave very differently in a system and often use different oil types . R22 is a virgin refrigerant meaning it has a constant set of values based on temperature and pressure. 134a is a blended refrigerant and uses a glide slope to determine values. Unlike R22, any refrigerant with an “a” suffix is a blend meaning the different refrigerants in the blend evaporate and condense at different rates. Blended refrigerants should not be mixed with anything including themselves. If a leak is substantial enough to require Additional charge, in most cases all of the refrigerant should be recover

How much psi is a R-22?

R-22 systems are typically about 300 psi maximum. If you add R-22 to an R-134a system, you will not get close to the rated cooling capacity of the A/C system. In conclusion, do not mix R-22 with R-134a refrigerants, you will ruin the charge, and possibly seriously damage or destroy your A/C system. Sponsored by Stanford.

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