Robinair 15600 Vacuum Pump

What is your recommendation for a ac vacuum pump? I have been using a 1 cfm single stage pump at my service station and it takes forever to get a good vacuum, especially on larger trucks and RVs. I have been looking at your Robinair models but I can't decide on the right size.

For a professional auto shop doing automotive air condtioning work, a 1 cfm single stage vacuum is definitely too small. I would recommend the Robinair 15600 which is a 2 stage, 6 cfm vacuum pump. A 6 cfm vacuum pump will work on cars and all the way up to RVs and buses. The Robinair 15600 can pull a 600 micron vacuum in around 60 minutes and I bet it was taking you a lot longer with the little 1 cfm vacuum pump you are using now. An investment in the larger pump will for sure pay off in the long run and save you time and money in the shop.