VEVOR 3.5 CFM Vacuum Pump, 1-Stage HVAC Vacuum Pump with Oil, AC Vacuum Pump 134a, 4-Pole Pure Copper Motor-Longer Running Time, for Resin Degassing, Refrigeration Maintenance, Vacuum Package etc.

Done a few drafts with this or as great and don’t burn down the oil still on the first bottle

Luego de una buena espera he recibido mi bomba para hacer vació, la misma se nota que tiene una buena construcción y tiene unos buenos soportes de goma que no la dejan mover durante su funcionamiento, aunque de momento no tengo un vacumetro digital para probarla con mas exactitud, he visto muchos comentarios donde la misma trabaja muy bien.La bomba es bastante silenciosa, trajo su aceite aunque este no llega a la linea de nivel máximo, creo que debería traer la cantidad total del aceite, sin embargo una carga de 250ml la deja a mitad de nivel, suficiente para realizar una buena cantidad de vacíos antes de tener que cambiar el aceite.Estoy contento con mis nuevas herramientas para emprender en el mundo de la Electricidad y Refrigeración.

Works great and highly recommend.

Nice, budget friendly vacuum pump. I wouldn't buy it if I were running an auto shop, since I don't think it's good enough to withstand daily use; it gets VERY hot. But, if you need a pump that you will use only once in a while, this one should do the job. I did 2 car air conditioners with it, and had no problems.

First impressions are great. Pulled my home hvac system down to 240 microns. Bought as a backup for my work rig, needed to test it out and had a repair to do on my own system. Pulled a large split heat pump unit with 55 ft of line down to 240 microns in 15min. I was using 1/2” vacuum rated hoses with an 3/8 “Y” adapter. Hose fittings were 3/8 on one end to 1/4 on opposite, 6ft length. After a triple evac system held at 240 for over 2 hrs before charging. Can’t really ask for more. As far as longevity- time will tell.

Works beautifully and no oil leaking or mistake at all. It is whisper quiet and achieved -29 InHg within a few seconds. See my photos.I hardly ever write reviews but this is an exception. I highly recommend this pump.

Only used this once, but it pulled a decent vacuum and was much cheaper than taking my car into a shop for an AC recharge after fitting a new compressor.

Returned it twice because it couldn't pull a full vacuum off a 3 gallon chamber made by the same company. I think tech support was AI or something because they always suggested the same fix before agreeing to just return it.I got my money back so I only wasted time. I love how quite it was though and really wished it work.I'm going to eventually but the HF 3CFM one and see if it pulls a vacuum. If it can't I'll then know it's something with my new chamber from this company or the supplied hoses.I really REALLY wanted this to work.