Single-Stage HVAC Vacuum Pump, 4.5CFM - Ideal for AC Repair Tools

So I had to get a vacuum pump that can handle multiple jobs and not have to worry about it being able to handle the work load. So I have read a lot of reviews on this pump and said let’s give it a try, so I did and it worked great for me. Just one big problem with this pump is it just keeps leaking pump oil all over the place and I can’t find where it is coming from. I checked the drain plug and the mounting screws (pump housing to the motor) everything was tight.. so I have looked at the sight glass and had noticed that the level had dropped by about 1oz or so. I am going to send it back only because it just keeps leaking oil. I know that some oil blow by is normal but not after use and cleaning it up and putting on the shelf clean and dry only to pass it by on the shelf and noticed that it was leaking oil all over the place. Maybe the company should concentrate more on quality control and making sure that before the product leaves that everything is good to go and the company’s website is a bust!! No proper links to get help or to be able to get replacement parts it just says return to place of purchase.. Likes. Great pump for the price. It’s quick and easy to use and can draw 30 in of vacuum on my manifold not connected to anything and get around 28-29in of vacuum when connected to the job. Starts quickly and runs pretty quite. The inlets 1/2 in acme and the 1/4 in flare on it make it easy to adapt it to your own needs. Dislikes.. It keeps leaking oil all over the place where it is coming from I cannot see just where it is coming from. All and all the pump is a great pump for the price..

I purchased this vacuum pump for two purposes. First was to pull a vacuum on a newly installed air conditioning system. I was able to pull just a tad over 30in/Hg of vacuum which was exactly what was needed per the systems recommendations. It was able to achieve this in just a few seconds, and was able to hold the vacuum for over 30 minutes even after being shut off. The pump has since then lived its life connected to a vacuum former that I use to make firearm holsters, mag pouches and knife sheaths. The pump again achieves 30in/Hg of vacuum on a regular basis. The supplied bottle of oil has lasted for just under a year, and I expect it to last another 6 months at minimum. The pump is fairly quite, and works quickly. The fittings are standard with clean brass threads.

I received the pump just in time to complete an urgent project. The directions include an "oil flush" procedure, so I filled the pump with oil, ran the pump for 1 minute, then drained the oil . The pump only came with one bottle of oil, and it took the entire bottle to fill up the pump, so now the pump is empty, and I have no oil to refill it for use. I bet the company who designed this pump package is still laughing about it. Well, now I have a properly flushed pump, that I can't use. Also, I needed the pump to vacuum bag a carbon fiber part, but I couldn't find anything online, or in my local hardware store, that would adapt either the 1/4 male flare or 1/2 male acme fittings on the pump to a regular straight or pipe thread. I needed a 3/8 barbed fitting to come off the pump to hook up the vacuum tubing, and hours of searching for an adapter revealed nothing. Edit 12/11/2018: I was able to find vacuum pump oil at a local auto parts store, though there were no specifications on either the pump directions included in the box, or the oil bottle I bought. They were also different colors (the oil provided was light amber, the oil I found is clear). I ran the pump with the 2nd fill of oil, and it ran great. It does shoot a lot of oil fog out of the air exhaust while pulling down to final vacuum pressure, but I detected no oil fog exhaust while the pump ran once the system was at full vacuum pressure. The gauge I used at 170' AGL on a cool, clear night showed a full 30.00" of Hg (I know, max is 29.92 at standard ATP). Since the pump works, and pulls a full vacuum, I upped my rating to four stars. The problem of the manufacturer supplying only enough oil to flush the pump, and not enough to actually use the pump, took off the 5th star.

I am a regular pay cash for this item type customer. Bought this vacuum pump to pull a vacuum on a Dodge R-12 system that had been retrofitted to R-134a about 14 years ago. Pump arrived on time and in good shape. It is packed in a Styrofoam molded box so it ships very well. Instruction book is good and clear. Added oil to the pump (came with the pump, exact amount needed) and put teflon tape on the connections. Fired the pump up and it immediately pulled a vacuum. My gauges only read accurately down to 30 inches, and this pump pulled slightly below that (30+). Pump is quiet and ran for an hour under load with no issues. I can't speak for longevity of the pump yet, as I have only used it once. However, if you need to pull a vacuum on an ac system or want to do some smaller vacuum molding, then this pump should work well for you.

I will be returning this as I have not heard from the manufacturer (sent them a note). For the most part, it seems to work but not if I lose 1/4 of the oil in process. Luckily the oil is not corrosive but I had a mess on my hardwood floors. I left it running after it seemed to be doing ok but came back and noticed the oil gasket / cover worked itself loose so oil was spewing out (I don't mean the exhaust, which is supposed to happen). I tightened it as much as I could but remember it's plastic so it should be finger tightened. Also, one of the 1/4" adapters which plugs into the refrigerator suction or high side valve (there are two and one is suspect) leaked all over the place and I lost a bunch of freon. With no response to replace these items, I am sending it back and will be looking for a different unit or a different manufacturer.

Compact, portable, easy to use. The handle doesn’t get in the way of the valves so that I can easily add hoses or whatever I need. Powerful enough to handle multiple tasks at once. The best thing I like about it is that it smokes less and uses almost no oil compared to all the other vacuum pumps I have used. In the past 6 years, I believe I have tried just about every vacuum pump on the market and they’re all oil eaters. I am talking a quart ever two or three weeks! This machine has been filled twice since I’ve had it. And other vacuum pumps have this steam/smoke that Is really annoying at best and possibly harmful to your lungs at worst. This one I actually have to look to see that it does have something similar but it’s such a little amount to as to be negligible. Its smokes, but it doesnt produce a cloud I can barely see through like the others. Without a doubt this is going to be my vacuum pump of choice from here on out.

The pump delivers good vacuum when brand new (under 200 micron) but that’s short lived. The unit has a very short lifespan and after about 15 hours use it will barely break 2000 microns. New, clean oil won’t bring the performance back. It’s simply worn out.

I bought this pump to charge the A/C system on my Silverado. It arrived on time, was well packaged, clean and included the oil necessary to run it the first time. When I hooked it up, it quickly brought the vacuum down to near -30. After testing for leaks, I ran it for nearly an hour to remove any moisture from the system. It ran the entire time without incident and had no problem dissipating the heat it generated. I have only used it once so far, but am very happy with its quality and performance. I would recommend this unit to weekend mechanics.

Great little vacuum pump for ac repairs. Work well. Pulls a full vacuum quickly. Good value for the money.

excelente materiales

Worked great to evacuate auto AC, well worth the extra over an air operated vacuum pump

I purchased this pump so I could bleed automotive hydraulic systems like brakes and clutches. The pump works very well and easily pulls 30" of mercury and it runs cool with no sign of overheating. If operated without any load it will push out a fine mist of oil through the breather but that is quite normal for this type of pump. My only complaint is with the intake fitting that it came with. It's set up for a flared metal line and is useless for my purposes so I changed it out for 1/4" NPT fittings that are more applicable for my application. It's a good little pump and will do the job and pricing is reasonable when compared to some others. I would buy again if need be. Revision: I purchased this unit to build a vacuum operated brake bleeding system. Unfortunately the plastic base and handle cannot withstand contact with brake fluid and they decompose and become extremely brittle and fail. There is no mention of this in the ad. If I had known that at the time of purchase I would have looked for something a little more robust. As it stands, I will have to modify the base and the handle to make this machine useful again.

Good price, worked well 50hrs so far. Good price.