FOUR UNCLES AC Flush Kit - Air Conditioner System Cleaning Tool Set with Stainless Steel Canister and Nylon Hose & Flushing Spray Gun for R134a R12 R22 R410a R404a

Why did you pick this product vs others?:I own a 1993 Ford F-150 and had an AC issue that led me to converting system from R12 to R134a. I certainly wanted R12 mostly to make things easier, it cools far better and the OEM components were made to accommodate R12 and not R134a, so it's not as efficient.The issue I had was that the desiccant in the accumulator/dryer broke apart and clogged the orifice tube. I was sure that some of it found its way to other components throughout the system. I rented a compressor from one of the big box home stores, purchased several courts of AC flush, and finally, this unit to connect to the compressor so that the flush is forced out under high pressure.I replaced the compressor just to be safe so I don't have to clean it, so I focused my energy on the lines, condenser and evaporator. It's a messy job no matter how hard you try to make it not so. You're refilling bottles, changing from bottle to air nozzle, it's just a mess. Luckily, the cleaner is essentially just that, a cleaner with a citrus smell so it's easy enough to rinse off if you want, or just let it evaporate.The Four Uncles tool isn’t absolute necessity if you intend to flush components, but it no doubt improves the results. I flushed the evaporator so many times and re-used some of the flush after it's settled. I was much more concerned about the desiccant versus oils or anything like that.I may have to break the system open again and replace the orifice to again, as it should trap any remaining desiccant within this system. For now, it's working as well as can be expected. Pressures are where they need to be, but it definitely does not cool as well as the R12 well did. If I notice any fall off or other issues that will expedite breaking the system open again. Depending on what I find, I may use this tool again to perform another flush.

Works as expected.

I’ve used this a few times now. I even rigged it up to pressurize and clean fuel injectors. I’ve been really pleased with the quality, too.

Update. The seller contacted and made every effort to make sure I received a good working unit. Originally it leaked everywhere for me so I purchased another one. Between the two I made a good one. Sometimes a part doesn’t fit quite right and that was the case here. But because of the fantastic customer support, everything worked out.

Awesome product works excellent for flushing out. AC systems would definitely buy it again. I love it.

Me encanta

Worked well, make sure all connections are tight before putting pressure to it or you'll make a mess ha.I had to take the black rubber cone off and put a hose onto the airgun part to get into different areas

Pressure gauge is accurate, hose and o-rings are quality. I don't see anything that could be improved.