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I bought this for a auto air application and it was not loud for 10 min's then it sounded like a single stage air compressor Loud but it worked well for my use. Just make sure you keep the hard to find high speed vacuum oil HFV 32 to the full line and clean or it might not, we'll see, it's here and I like owning one instead of renting junk from auto part stores, the price was right.
Verified purchase: Yes | Condition: New
I bought this to vacuum a new mini split a/c unit (R410A) . Pump is light, quiet and had no problem pulling the required vacuum. The unit does get hot but I ran it for over an hour in 95 degree heat with no problem. The vacuum port is 1/4" which was perfect for my R410A manifold gauge hose but you may need an adapter if using for R134A system. Low price and fast free shipping made this a great buy!
Verified purchase: Yes | Condition: New
The vacuum pumped worked, but the MIN MAX oil level was incorrectly stamped and the instructions were barely intelligible English. The MIN MAX stamp didn't increase my confidence in the product. If they can't get that right, then what else did they screw up? The pump worked, so I'm good to go, but it didn't please me that my queries about the incorrect stamp or the pseudo-English instructions were completely ignored.
Verified purchase: Yes | Condition: New
I have used the vacuum pump on car a/c since I received it. I pulled vacuum for 3 hours on each car. Probably not for professional users but works great for weekend mechanics. Only negative thing encountered was having to buy an adapter for my manifold hose connector.
Verified purchase: Yes | Condition: New
very happy with product used it on my truck AC unit. The only problem with this unit it will stop working when it heat up had to run 4 to 5 min then stop let it cool down then restart pull a good vacuum my truck AC is ice cold.
Verified purchase: Yes | Condition: New