Orion Motor Tech AC Gauge Set with Self Sealing & Puncturing R134A Can Tap, AC Gauges for R134a R12 R22 R502 Refrigerant, Car AC Gauge Set with 5FT Hoses Adapter Adjustable Couplers, Freon Charge Kit

I like the guages. Easy to read. Hoses are long. The feel of the valves are great. The bonus. Comes with two can taps. Punture style and self sealing type. Everything i needed in one kit. Used to fix the AC on both my trucks. 1995 GMC and 2010 Chevy. Good price and value.

AC gauges came with all parts advertised, easy to assemble hoses into manifold, and wound up using the R134a twist on tap. The low and high pressure connectors worked connectors worked perfectly. I was able to check our 2015 ML350 pressure and added about 6-ounces of R134a refrigerant, just enough once cooling restored. Quality gauges and great value.

Gets the job done. It works. However, a couple things just didn't make sense to me. Most manifold sets have a quick connect fitting for the schrader valves which then you turn a knob to depress the internal pin. These do not. They press on the pin at the same time as you couple them to the valve. This can complicate things if you try and press on the high pressure side with the compressor on. You'll be trying to fight a pressure most likely >200 psi. Just keep in mind that you should connect these fittings with the compressor/car OFF. Also, if you install the quick connect fittings supplied then you don't have the false hangers on the manifold to store the lines. The storage fittings on the manifold are not quick connect. Not a huge problem, but I hate having the lines dangling potentially contaminating the interior of the quick connect fittings. Again, it works. Had no leaks and gauges were fine. All in all, for the price, it's a great value.

Very useful in diagnosing a persistent belt squeal that I thought was due to too much pressure in the car air conditioner compressor. The pressure was way too high. Adjusted the pressure and now have cool air without the belt squeal. Well worth the money. Don't trust the "on the can" gauges to refill the air conditioner.

This gauge is probably a bit lower quality than some of the professional versions you can purchase, but for a one-time use for me, it was perfect and allowed me to top off my own AC Unit.

I bought a motorhome and the AC didn't work...blew hot air and the compressor wouldn't kick on. I already had a vacuum pump from a wood stabilizing kit I bought, so I figured an inexpensive gauge set would at least help me do some initial troubleshooting. This did the job, and even let me complete the repair, but not without some frustration. For the vacuum test portion of the project, it worked flawlessly. But when it came time to load the refrigerant, I had two issues. One, it doesn't have a bleed valve, which is needed to purge the air from the yellow line so that you are loading just refrigerant into the system. I worked around this by partially unscrewing the yellow line where it connects to the gauge, but it didn't work very well. The other frustration was that the connections kept loosening. My understanding is that they are only supposed to be hand-tightened, as they use a gasket to establish the seal, and I do have good hand strength. Usually I have to be careful not to over-tighten things. But when loading the refrigerant you have to tip the bottle, and it seemed like any movement of the bottle would either cause the connection at the bottle to loosen or would convey movement through the line and loosen the connection at the gauge end. At the end of the day, I got the refrigerant loaded and the AC works fine, but it wasn't without some difficulty. Probably just a case of getting what you pay for.

Good product

I am an engineer and advanced home mechanic and rarely buy inexpensive tools. I bought these gauges to do a quick AC repair on my Honda Element. The gauges work OK but the hoses and fittings are complete junk. The refrigerant can taps were so poorly made that they did not fit the R124a refrigerant cans at all and leaked refrigerant all over the place. I was lucky that I was wearing gloves and eye protection. I bought a replacement valve here on amazon that was properly made. The high pressure fitting was very poorly made and as I was releasing it from the cars high pressure line it stuck and again refrigerant was released and I had to charge the system all over again. I would say the fittings on these are a hazard and there is risk of injury. Wear safety equipment when working on AC systems. I tossed these in the trash and got a better set of gauges.