XtremepowerUS 3CFM 1/4HP Vacuum Pump HVAC R134a, R12, R22, R410a, A/C Refrigeration R134 Can Tap Adapter, R134 Quick Connector AC Manifold Gauge Air Conditioner Oil Bottle w/Bag

Works great! FYI the cheap Walmart 134a cans don't like to screw on tight to the fill hose adapter. Everything on this manifold set works as it should.

I was concerned when buying this kit due to the negative comments. Especially, the comments where people had problems pulling a 30 HG vacuum, suggesting the pump was not powerful enough. After a bit of research, I decided that the pump should be able to pull the required vacuum, so I gave it a go. When setting up the system, I realized two quality control issues. First, the high-side (red) hose was missing it's rubber insert. I found that out the hard way, by watching the system leak down to zero after pulling a vacuum. Fortunately, the kit came with 3 extra inserts, which fixed that problem. Second, the can-tap fitting has different threads than the yellow hose. You literally cannot connect the hose to the can-tap fitting. That crisis was averted as the kit comes with a few extra fittings that can serve as adapters, but they have Schrader valves in them (I think they are for systems with a different refrigerant type). I removed the Schrader valve from one of them and used it as an adapter -- it worked (I think someone put the wrong can-tap valve in the box). I was able to pull a vacuum without issue. Within 60 seconds, or so, I was at 29 to 30 HG. After letting the system sit, confirming no leaks, I ran the pump for 45 minutes to extract any moisture. The pump did great and held the system at 29-30 HG (for those who want to know, my location was at 750' altitude, 50 degrees F, 51% humidity, and 30.22 HG air pressure). The pump smoked a little at the start, but ran clean after that. I was successful in doing a full recharge. Even though there were quality control issues, I still gave this product 5 stars as the price was fantastic considering the tool's purpose, it was easy to use, and it was able to get the job done.

Used for two different heat pump installations: a 18000 Btu and a 6000 Btu and it vacuumed both efficiently - one year apart. So it was still working great after a year in storage. I replaced the vacuum oil after that year - as recommended by the manual. Replacing the oil involves running it for about 15 mins to warm up and loosen the oil, then a hex screw to the front (have something to catch it ready underneath). The hoses and gauges worked for a nitrogen 300psi pressure test as well. Everything seems good quality - and held up to storage for a year in between uses. Would definitely recommend! If you plan on using the gauges for a pressure test, just keep in mind that some newer heat pumps recommend pressure testing at about 500psi which is beyond the accurate range of this gauge.

Product runs well and is satisfactory if they give one extra bottle of oil is amazing

Great tool helps me get the job done and makes me money

So the longevity question has been answered! THIS is a quality setup! Maybe not the fastest or the best, but sure as heck does just as good of a job as anything else costing more. I've used mine to add 134A to leaking systems, repair systems, and have it hanging always within reach in my garage. I use the standard small cans of 134A and I can't tell you how many I have used through this manifold. I love it. I recommend it. The vacuum pump works GREAT! Will vacuum down the system perfectly! The bag is very nice as it protects the vacuum pump from dust and grit and damage sitting on the shelf. What is even more wild, to me, is that the price has gone DOWN since I bought mine! Wild! Seriously, for the shade tree mechanic, backyard mechanic, or even a mechanic in a shop, I can confidently recommend this particular kit as being a good buy. I literally just saved a $2500 dealer repair bill for my wifes AC by doing it myself with less than $400 in lifetime warranty parts! YouTube can show you how to use it! This setup cost less than the $159 diagnosis fee I ended up having to pay! Get you one!

Product works great for me as I install mini split system

Works great

Me encantó excelente calidad

fonctionne trais bien j'utilise régulièrement je la recommande

After using this product about a dozen times on various vehicles, certain parts started to fail. 1st the high pressure quick coupler seals leaked. Then the low side shortly afterwards. The R134a can adapter was next, not allowing refrigerant to flow freely, then the brass T fitting cracked and leaked slightly. Finally both gauges became inaccurate and unreliable. The only parts still working properly is the vacuum pump and hoses. Gave product 2 stars because of this.

Es un buen producto cumple su función ya hice el vacio a dos aires de auto y todo muy bien El único inconveniente q tuve fue en una llave del manómetro esta como barrida cuando la abres ya q no llega a un tope solo es cuando la abro Por lo demás funciona muy bien

I tried to change pump and condenser without a vacuum pump. Worked for about 15 mins, then vapor locked. Put on the pump and ran it 2 hours, had air since. What's not to like?