VIVOHOME 110V 1 4 HP 3 5 CFM Single Stage Rotary Vane Air Vacuum Pump with Oil Bottle

I havent used it alot but the times I have, its worked very well. Hopefully it holds up over time. Read more

I bought this to evacuate the air conditioning system in my 2015 Forester after having replaced a high pressure rubber gasket that was leaking at its A/C compressor attachment point. After leaving it run for 45 minutes, the VIVOHOME 3.5 CFM Single Stage Rotary Vane Air Vacuum Pump was hot to the touch but it did create the vacuum needed. That vacuum was maintained for over 30 minutes even after the pump was shut off giving me proof that there were no other leaks in the system. Using my auto A/C vacuum gauges and hoses, I then recharged the system with one 12 oz. can of R13 . VIVOHOME's instructions say before running to add the included pump oil up to the fill line level in the site glass. There are two fill lines, a min and a max. I decided to fill it to to the min fill line and that seemed to be the right level as no oil spray came out of the exhaust hole at any point during my use and the oil level remained constant. I was left with about a quarter of the provided oil still available for future use or topping up. It's recommended to change the oil after each use but the oil in my pump remained clear and clean so I left it in the pump for another use. Often times, I think of a low cost item as being inferior; and oftentimes it is. But I don't think that's the case with the VIVOHOME 3.5 CFM Pump as I was pleasantly surprised with how well it worked. Read more

Replace the fuel seals on my AC system on my vehicle. I ended up losing all the freon due to these leaks. So instead of taking it somewhere I have a set of gauges but I needed a vacuum pump to pull vacuum on the system and make sure it has no more leaks and to dry it out. I settled on this pump I know it's only a quarter horsepower but it does the job. It pumped down the system fairly quickly in about 15 minutes but I let it run for over an hour to ensure it pulled a heavy vacuum to help dry out the system. I let the system sit for about 5 hours make sure I had no leaks. I fill the system with freon and it works great. The nice thing about this pump is it comes with the oil, and there are two type of fittings on the pump one for r22 and one for r143a. The pump construction seems pretty durable although I wouldn't drop it it will probably snap something. The oil is easy to drain and the side Glass is nice so you can see any contamination in the oil. Just make sure when you replace the oil you you vacuum pump oil of a good quality. I imagine after a few uses the oil will become contaminated with moisture. Otherwise this pump work fantastic for my intermittent use for the home mechanic Read more

Good product Read more

Works great for vacuum chamber !!! Read more

This thing is great. I just installed two new mini split heat pumps and ordered this to pull the vacuum before releasing the refrigerant. It took 18 minutes to get into microns. About an hour to get to 500 microns. Coming from a former professional hvac technician, this little quarter horsepower vacuum pump is well worth the money. Read more

WHile my career shifted decades ago, I still have the knownedge and skills to DIY my own repairs when my AC dies on my car. First things first, this is NOT a recovery machine, nor is it intended to be. If you are DIYing your own AC repair, take the unit in to have it recovered by a local shop or shade tree with a recovery machine. They might actually pay YOU for the refrigerant recovered.... Break in procedure is in the user guide, such as it is. The oil included is of course vital. Hook it up properly to an empty system that needs to be vacuumed, open your low side guage and turn this thing on, watch it slam the needle over and you are pulling plenty of vacuum with no funny noises. Build quality seems decent enough for the cost. To be blunt it just does what I need it to do, and really have no reason to suspect it of not being able to hold up to light to medium use. I wouldn't want it to be my only vacuum pump in a busy shop where i Need to move several cars a day to make my living, but for DIYer or a mechanic that might do a job once a month involving vacuuming down an auto AC system this would really fill the bill... Read more

I purchased this with the garages and changed the compressor on 2 of my cars and with all that I spend including compressor and r134a I saved about 1000 bucks. Read more