The heart of the AR2788 is the proprietary 1 HP CPS Cyclone™ oil less Hybrid compatible compressor providing up to 50% faster recovery cycle rates. A unique patent pending plumbing arrangement eliminates the use of all solenoid and check valves, both being highly susceptible to in-field failure when exposed to foreign contaminants such as aftermarket A/C Sealants.The patent pending flow control technology and 6 CFM PRO-SET® vacuum pump allows you to evacuate systems up to 50% faster. Intelligent self diagnostic capabilities, proprietary 5 level modular design layout and quality USA manufacturing all contribute to create a solid unit you can rely on to run smoothly in those busy summer months.As an added feature to the AR2788, all five modules are Takeapartable™ for ease in upgrades and maintenance.