Orion Motor Tech Vacuum Pump, 3.5 cfm 1/4 hp HVAC Single Stage Vacuum Pump for R12 R22 R134a R410a R502, Auto AC Vacuum Pump Kit for Automotive Air Conditioner Resin Degassing & More, Oil Included

I purchased this vacuum pump specifically for evacuating my vehicle's AC system before recharging it, and I'm pleased to report it performed exactly as needed. For anyone doing their own AC work or HVAC repairs, this pump delivers solid performance at a price point that makes it an attractive alternative to more expensive professional-grade options. Performance on AC Systems The pump pulled down my AC system efficiently and reached the necessary vacuum level without any issues. It handled the job smoothly, maintaining consistent suction throughout the evacuation process. The gauge readings were stable, and the pump achieved the proper vacuum depth required for removing moisture and air from the system before introducing new refrigerant. This is exactly what you need from a vacuum pump—reliable performance that gets the job done correctly the first time. Exceptional Value What really stands out about this pump is the value proposition. AC vacuum pumps can get quite expensive, especially if you're only an occasional user rather than a professional technician. This pump provides the functionality you need without the premium price tag of top-tier brands. For DIY mechanics or homeowners who occasionally need to service AC systems, the cost-to-performance ratio is excellent. It's affordable enough that you don't feel like you're making a huge investment for a tool you might only use a few times a year. Build Quality and Longevity Based on my initial experience and inspection of the pump, it appears to be well-constructed with durability in mind. The housing feels solid, the components seem robust, and there's nothing about the build quality that raises red flags about premature failure. While only time will tell for certain, all indications suggest this pump should provide reliable service for many years. It doesn't have that cheap, disposable feel you sometimes get with budget tools—this seems like equipment that's built to last through multiple jobs. Would I Buy It Again? Absolutely. If I were in the market for another vacuum pump or needed to recommend one to someone else, this would be an easy choice. That said, based on how well it's holding up and how solidly it's built, I don't anticipate needing a replacement anytime soon. This appears to be one of those purchases where you buy it once and it serves you reliably for the long haul. Final Recommendation For anyone needing a vacuum pump for AC work, HVAC repairs, or similar applications, this pump hits the sweet spot of performance, quality, and affordability. It does what it's supposed to do, it's built to last, and it won't break the bank. Whether you're a DIY enthusiast tackling your own AC repairs or a professional looking for a cost-effective backup pump, this is a solid choice that delivers excellent value.

Really great vacuum pump for diy. Got the job done. Great product.

Second Orion product I’ve bought and both have been quality tools. The pump came with oil, I filled it and put it to use. It works perfectly and I like the fact that it has both common size fittings on the pump. It also was a great value!

Seems ok, It worked for one use so I can't attest to longevity. They only send you a tiny little bottle of the special oil required. Somehow some of the oil leaked out and there wasn't even a tiny bit of oil left in that little bottle too even top it off.

Seems to work properly time will tell how long it will last.

What Vacuum Pump. It arrived leak free, seemed very sturdy upon inspection. I used it on my truck today (1990 Chevy Silverado 1500 5.7L V8) and the A/C had been converted to R134a back in 1998. It was real easy to use with my OMT AC Manifold Gauge Set that I bought separately as I wanted better gauges than the ones offered by OMT kits. This pump is a wonder. It pulled a -30 inHg in about 20 seconds flat. Then when I kept it on for over 30 minutes to pull out all the air and water it got Semi-Hot but you could still touch it for a couple seconds to check the temp. Never got real hot at all. Actually it states it will pull a 5Pa but it looks like it will do a low 4Pa as my gauge went past the -30 into the black. Oil supplied was sufficient for a good between High-Low fill and it never moved from that position the whole time. Smoked very little upon start-up. IMHO this is a excellent unit and priced right for a DIY person. Need it - Get it..

This thing removes air very fast and well, draws down a car a/c very fast. The oil filler top is liable to spill if you lean the unit over, so keep it upright or you will make a mess. Buy a spare bottle of oil if you plan in using it a lot. You will need the entire bottle they give you to get it started. Excellent value for money and delivers. -- Update. I have now used this pump multiple times over a 2 year period. Works great no problems at all. Paid for itself the first time i used it, every time since is a big bonus. Draws down a small A/C system in 20 seconds, a large house type it takes a couple of minutes. Holds a vacuum well, if you forget to close the manifold right away. Top up with oil when you are going to take it out and use it, or if the oil become discolored with contamination. I also rigged up a system to use it instead of a foodsaver for vacuum sealing mason jars, vast improvement.

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I bought this vacuum pump mainly to replace my car’s A/C compressor, and it worked perfectly. It pulled a strong, steady vacuum and held pressure without any leaks. The setup was straightforward, and the pump feels solid and well-built for the price. It made the whole A/C recharge process smooth and professional. Highly recommend for DIY automotive work or anyone servicing their own A/C system.

Used it to vacuum prep my vehicles AC before adding refrigerant. Was pulling at least -30 PSI, but my gauges max out for any lower. Ran it for 45 minutes. Electric motor body was warm to touch. The pump part was hot, but not enough to burn. Easy to setup and use.

Burns oil but that seems to be normal

works well, had to vacuum my ac system and it seems to work as expected and good price. hold the vacuum correctly.