VIVOHOME 110V 1/2 HP 5 CFM Dual Stage Rotary Vane HVAC Air Vacuum Pump with Oil Bottle

The pump arrived packaged well and oil free. I’m guessing based on reviews there were some at some point that the supplied oil leaked from the bottles? Comes with enough oil to fill to recommended level plus enough to change it at least once-possibly twice. Worked great vacuuming the a/c system on my 2015 Dodge Durango which was my first ever attempt at recharging auto a/c on my own after replacing the condenser which was taken out by road debris getting through the grill. No complaints on the vacuum. Seems to be a solid unit, appears built well, and operates as if it’s well made too. I bought the bigger two stage in case of a need for other possible applications in the future.

Works like a pro

It hasn’t disappointed in any way. I use it to extract solvents and organic debris from distilled byproducts and it is spot on. Powerful without the size and easy

Good product

In Project Farm's video titled "Most Reliable 200K Mile Car? Let's Settle This!," he shows how to make a homemade extraction pump for automotive service. I followed his steps to the T and used this vacuum pump for the build. I ran a test using 80W-90 gear oil, and this pump pulled the thick gear oil without struggle.

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

This vacuum pump worked well, easily reaching vacuum levels less than 120 microns during the mini split evacuation and installation. (I measured 4 microns at the pump!) It comes with enough oil for one filling; buy more for repeated uses. The only sad comment is that this little pump will likely spend its lonely life sitting on a dusty shelf after its only use by a DIY mini split customer. If there was only a way to ship it to the next customer to share its benefits.

The media could not be loaded. When it works it’s great. However, after leaving it off overnight it always struggles to start up the next time it is used. Once it starts it’ll will work even after turning it off. I have tried starting it with the valves off and removed and still stutters so it’s not the back pressure preventing it from starting. The stutter sounds like a car that won’t roll over on the start. Don’t think it’s the voltage since i made sure all other appliances are off. I emailed Vivohome and will wait to hear back. Just posting this review so they can see the video of what it does. It eventually works but just takes time and triggers the built in breaker which turns on itself after a few seconds.