Orion Motor Tech AC Manifold Gauge Set for R12 R22 R502 R134a Refrigerant, 3 Way Automotive AC Gauge Set with Antishock Gauges Hoses Couplers & Adapter, Puncturing Can Tap Freon Recharge Kit for HVAC

My evaporator core sprung a leak and after getting a couple of quotes, I decided a DIY fix was in order. This manifold gauge set wasn't my first choice, the other was sold out, but in hindsight this set has 1 ft longer hoses which made the AC work much easier. I had no trouble putting it together or hooking it up, the high side slid right on without any struggle. Seals were all good and I was able to successfully vacuum test my work for 12 hours without any leakage in the system or the gauges/hoses. Recharging the system was a breeze with the can tap adapter (not included!) and I felt much better doing the recharge with the gauges versus the prior work I've done with a single low side can tap and gauge. The high side connector did indeed stick after running the system for 30 minutes while I recharged the system and the root cause is very clearly thermal expansion. If I hook up the system when the system and car are cool, it pops right off without issue. Once the car and the system heat up, the connector and hoses heat up and then it becomes more difficult. In my case, I waited 5 minutes and the quick connect released without much fuss. I'm sure there is an engineering solution to this problem, but for the price I'm ok with waiting a few minutes. It gave me an excuse to have a beer and celebrate a successful AC repair!

Back many moons ago I did residential A/C and used Yellow Jacket gauges. I gave them to my son for his work and have not needed gauges until now, to work on my old car's a/c. This set of manifold gauges are just as good for a lot less money. Granted, I will use them only occasionally, not everyday. I have always hated short hoses, and this set comes with 5 foot hoses, just what I like. There is no problem with leakage, they seal fine. The high side adapter is difficult to remove unless I shut off car and wait for the pressures to equalize, which means I am fighting less pressure on the high side. My high side port is not easy to get hold of because of its location and by waiting for the pressure to decrease I can push down on the fitting enough to lift the collar. That is an adapter thing, not the gauges, which work great. Yes I would recommend these gauges to a friend.

Trying to determine AC cooling issues without one of these hoses is nearly impossible. I noticed the mixed reviews but I took a chance. The hoses worked as intended and Confirmed that my ac is low on refrigerant. I was worried about the high pressure quick connector getting stuck. When I tried to get it off, using one hand it was very difficult. The trick is use both hands - one to pull down on the red collar but the second hand grabbing below the collar and push the hose upwards. This pull and push action will give you leverage and the collar will come off. The reason that it gets stuck is due to the high pressure. It is not a defective hose. The instructions were basic with no real details on how to connect the hoses. I wish they included that. I had to look up some how to videos and figured it out myself. I also wish they charged a bit more and included the adapter for the yellow hose. They did mention not included in the description though. I was able to charge my ac using another old low pressure hose that I had connected to a r134 can already. Overall, these hoses are a cheap investment and they served its purpose. I am a diy not a pro mechanic. So I do not plan on using these all the time.

Used these gauges to recharge my HVAC unit with R-22 Freon refrigerant. Everything was in kit and no issues encountered. The needle for the low side blue gauge was just a tiny bit off from idle atmospheric reading not at 0 but not a big deal as you can adjust by taking the clear face cover off and gently turning the flathead adjuster. I didn’t try and just made note of it. Nice for a DIY and not as a professional.

These AC gauges are of very high quality, very good feel , touch and accurate. It is amazing how inexpensive they are, bravo to both Amazon and the factory that made them!!. Come with extra accessories, including the 1/4"-5/16 flare adapter to go right into the testing port, which is thoughtful and convenient.

Moisture causes an AC system to leak. You pull a vacuum on the system to remove any moisture possibly in the unit. Then, the correct way to add Freon is to connect your refrigerant to use your yellow hose and through a port connected to your gauges, evacuate any air remaining in the hose until coolant starts to spray out assuring there's no moisture in the line. These gauges do not contain that valve making them unusable for refilling coolant in the state they're boxed up in. I had to go buy a $10 adapted to put between the two schrader valves at the top on the yellow to insure i did the job correctly. These will work great for diagnosing and pulling a vacuum, just not actually adding the coolant... which is the whole point. If you're looking for a complete set of usable upon opening gauges, these are not the ones. Also, the in depth guide they mention in the description only tells you there are 3 hoses to screw on the gauges, and then proceeds to explain how to check your ac system. There is not an explanation on what each adapter is and used for, there's not detailed parts list, there is not a company phone number, or even a company name. The front of the box says "brass manifold gauges' and leaves it at that. These are very cheap gauges that are only good for diagnostic purposes.

Feels like a good piece of equipment but two things concerned me while using it to test, evac, and recharge a car AC system: 1. Connecting both the high and low ports with the engine off resulted in the two gauges reading significantly different pressures (~25 psi delta on a ~70 psi reading). The static pressure in the system should be the same on both the high and the low side so one of the two pressure gauges is inaccurate and I have no way of knowing which one. 2. Like some other reviewers, the high side quick disconnect fitting got stuck on and the ensuing 5 minute struggle to disconnect it drained a significant amount of refrigerant out of the system. After the first incident I did not use the high side connection again. The low side disconnect worked flawlessly all three times I used it.

Like others have stated the adapter that's provided does not work for the T-can fittings you buy in the store. The threads do not lineup. Youre dead in your tracks. So they need to be more clear that the adapter provided Will not work. The second surprise was the gauges are in Celsius and not Fahrenheit, not a showstopper but a surprise nonetheless. Perhaps I did not realize it when I ordered it so make sure you order the right type you need. Mfg contacted me regarding my two complaints: I needed the Celsius version was my fault as it is stated in the product description- just be sure you see it. As for the adapter to fit a T-fitting on gas can, it does not come with the product rather the product is configured as std 134a threading. T-fittings for those 12 ounce gas cans commonly sold in automotive stores are different For this inconvenience, the mfg gave me a partial refund without asking for it. This company stands behind their product and customer. Additionally, I've been using the gauges for several days now under constant pressure and very happy with the product. Unlike other gauges I purchased in the past from HarborFreight (junk that leaked), these are performing perfecting. Changing my rating from 3 to 5