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12 votes
Accepted

How do A/C professionals dispose of refrigerant?

When I got my Refrigerant Handling Certification from MACS many years ago, we were sworn to use a proper recycling machine, which captured everything and filtered out air, oils, and moisture. The ...
SteveRacer's user avatar
  • 12.4k
6 votes

Does R-134A refrigerant normally have oil (liquid at room temperature) in it?

Yes there is oil in the system to keep the compressor lubricated. It is carried throughout the system in the refrigerant. It is usually added in when the system is charged.
john D.'s user avatar
  • 552
5 votes

What exactly is R-1234yf?

R-1234yf is designed to be an environmentally-friendlier, near drop-in replacement for R-134a. Environmental legislations are pushing for refrigerants with lower global warming potential (GWP). R-...
Zaid's user avatar
  • 39.2k
5 votes
Accepted

Is it bad to mix different refrigerants?

There is no difference between brands of R134A, unless there is some additive in it which will be stated on the label. Some include leak sealer, never use this, ever. The only real difference is ...
Moab's user avatar
  • 7,990
2 votes

Advice before recharging car's AC with DIY kit and additives

It sounds like you have a serious case of the cheap's, and I think you know how that tends to turn out. It is an offence for unqualified people to handle most refrigerants. With the line being ...
Harper - Reinstate Monica's user avatar
2 votes
Accepted

R134a added to car AC "upside down"

It doesn't sound like you are using AC Gauges; they're essential for anything more than a quick top-up (but can be expensive). My recommendation is to take it to a garage for a full evaluation and ...
PeteCon's user avatar
  • 8,712
2 votes
Accepted

Can I use empty refrigerant bottles to store used refrigerant?

tl dr: You can do it, but you probably won't be able to bleed very much off by this method. NOTE: Please see edit at the bottom. Most every can of DIY refrigerant I've ever seen (whether R12 or ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
1 vote

Recharging A/C - adding oil, UV dye, & stop leak

You should never put stop leak in an AC system. It can and probably will damage and contaminate your system. The dyes are recommended, especially on older systems. They may eventually leak so it makes ...
Jupiter's user avatar
  • 3,320
1 vote

Can an A/C system cool with just 20-30% charge?

In most systems, and I'm sure your LR4 is typical, there is a low pressure switch that will shut off the compressor after a minute or two if there is too little refrigerant in the system. After ...
jwh20's user avatar
  • 12.1k
1 vote
Accepted

Are R-134a quick-couple adapters compatible with R-1234yf systems?

No, they are not. According to this website: Vehicles with R-1234yf have different service fittings than R-134a vehicles to prevent cross-contamination with different refrigerants. You can ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
1 vote

Can you use a vacuum pump on a charged A/C System?

There's absolutely no need to use a vacuum pump to remove the refrigerant. It's really easy to remove the refrigerant by condensing it out. If you're a shade tree mechanic, this is what has worked for ...
Kuba hasn't forgotten Monica's user avatar

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