Asked by: Nadya Amuedo
home and garden indoor environmental quality

What type of oil do you use with r134a?

Last Updated: 17th January, 2020

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Polyolester oil (POE oil) is a type of synthetic oil used in refrigeration compressors that is compatible with the refrigerants R-134a, R-410A and R-12. It is recommended by experts as a replacement for hydrofluorocarbons (HFCs).

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Also to know is, what type of PAG oil should I use?

With R-134a, there are primarily three different viscosities of PAG oil being used: PAG 46, which is the most popular viscosity oil; PAG 100, which is also common; and PAG 150, which is not often used, but it is still required for a certain compressor used in some GM vehicles from the '90s to the early 2000s.

One may also ask, when retrofitting an A C system from r12 to r134a what oil should be recommended? R-134a systems require PAG (polyalkylene glycol) oil of a certain grade. PAG oil is hygroscopic, meaning that it readily absorbs moisture from the air. Never leave the cap loose when storing PAG refrigerant oil. Some manufacturers recommend using less hygroscopic POE (Polyol Ester) oil instead of PAG after a retrofit.

Keeping this in consideration, what type of oil do you use with r22?

Mineral Oil

What kind of oil does a AC compressor use?

The two categories of oils commonly used in the compressors are mineral or synthetic oils. One type of mineral oil (MO) called Naphthenic is commonly used. Synthetic oils such as glycols, esters and alkylbenzenes (AB) have been used in the refrigeration applications for some time without any problem.

Related Question Answers

Lamiita Mocha

Professional

Can you add too much oil to AC compressor?

While installing a new compressor or any other parts in your AC system, it is imperative that you add the correct amount of oil. If you add too much oil to the system, it may pool in various places of the system and can coat the inner walls of the evaporator and condenser coils.

Telesfora Ansa

Professional

Do I need to add oil when recharging AC?

You normally do this when recharging the system after replacing one of the major components. This is tricky. The service manual normally tells you how much refrigerant oil should be added with each major component replaced on the AC system. Off-the-shelf cans sometimes come with refrigerant oil in them as well.

Belisario Perin

Professional

How much oil do I put in my compressor?

For a new compressor, look up the specifications of your AC system. An average car might use a bit of oil (4 oz. ) and two cans of refrigerant R-134a (12 oz.)

Miloudi Zakkai

Explainer

What is PAG oil made of?

PAG oil, or Polyalkylene Glycol, is a fully synthetic hygroscopic oil specifically designed for automotive air conditioner compressors. It is used in R-134a air conditioning systems to lubricate the compressor. When looking at PAG oil you will notice various numbers such as PAG46 or PAG100.

Gaofeng AraƱa

Pundit

Does vacuuming AC remove oil?

Pulling a vacuum will not remove the oil. Most of the time unless you replace your compressor or accumulator you should not need to add oil.

Estera Conrado

Pundit

Can 134a and r12 be mixed?

A: yes and no.. yes you can get a port adapter and put some 134a in the system but that doesn;t mean that it will work. chances are that the front seal is leaking and 134 will actualy leak faster then R12. as you use it the front seal "might" close up some.

Elisia Hilleprandt

Pundit

Can I put 134a in a r22 system?

Using R134a in Systems Designed for R22
If you have a home or auto air conditioner designed to work with R22 refrigerant, and the system needs a recharge, a number of issues prevent the direct substitution of R134a. R134a has a lower thermal conductivity than R22, so an R134a system needs a larger heat exchanger.

Treena Idemudia

Pundit

What is the best replacement for r22?

The best replacement for R-22 Freon is usually R-407c. It has a very low loss in capacity (0 – 5%) relative to R-22 and is less expensive than many other R-22 replacement refrigerants. If a system has R22 in it already you cannot use a replacement refrigerant to simply add to the R22.

Abdala Tedesco

Pundit

How long will r22 refrigerant be available?

The R22 phase out date means that after January 1, 2020, HVAC systems that use R22 will be obsolete. If the repair requires adding R22 refrigerant to the system, the only options will be reclaimed and previously-produced R22 refrigerant.

Haiying Bonne

Teacher

What oil does 407c use?

R-407C must be used with polyolester (POE) oil, since its solubility with mineral oil or alkylbenzene is limited.

Shaunna Guessan

Teacher

Does r22 have oil in it?

R22 Use Mineral Oil, POE oil is acceptable. Mixing is acceptable however it is preferred to use the oil that the original charge used.

Haja Marce

Teacher

Can you mix r22 and 407c?

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. If your system is running on R22 most likely is using mineral oil to lubricate the compressor.

Nasr Olmedo

Teacher

Can you switch from r22 to r410a?

R22 refrigerant and its HFC replacement R410A are totally incompatible. Your existing condensing unit and cooling coil are not suited to the new higher pressure refrigerant. It is possible to reuse the copper tubing lineset between the two, but we will discuss that later.

Lura Schiavon

Reviewer

What will replace Freon in 2020?

Beginning in 2020, Freon will no longer be produced or imported, but limited amounts will still be available. Older systems can be serviced or recharged with refrigerant using stocks of HCFC-22 until the 2020 date. After that, technicians will need to source recycled Freon to keep an old cooling system running.

Tenisha Pito

Reviewer

Will r407c be phased out?

R-22 production will be phased out by 2020 as per the Montreal protocol. It is not recommended to drop R-407C into R-22 systems on top of the existing charge in cases of low refrigerant levels.

Oscar Xion

Reviewer

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. R134a is so much smaller than r12 that it will leak right through the older hoses used for r12.

Ghizlane Ganchegui

Supporter

How do you flush an AC system?

How to Flush :
  1. Remove Refrigerant. Recover all of the refrigerant according to local requirements/laws.
  2. Dismantle AC system and remove components not being flushed.
  3. Dismantle the system components being flushed.
  4. Evaporator .
  5. Start flushing.
  6. Component reassemble / replacement.
  7. Purge the system.
  8. Vacuum, leak test and recharge.

Irune Freschi

Supporter

How can you tell if AC has been converted?

To tell if it has been converted you can look for a sticker on the unit under the hood, which would indicate that it is R134a. And you can also look for R134a adapters, which would be located on the charge parts.

Zaman Taleb

Supporter

How do I change my car AC from r12 to 134a?

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