The VacuMasterâ„¢ 15500 vacuum pump is a 5-cfm unit designed specifically for HVACR applications. It has a heavy-duty, 115-V motor with a high-torque design. According to the manufacturer, the motor's two-stage design enables the unit to start pumping at a lower pressure, allowing it to pull a deeper vacuum. An integral check valve prevents pump oil from being sucked into the system if a power loss occurs, says the company. It comes with a one-year warranty.
Robinair, SPX Corp., 3270 Executive Way, Miramar, FL 33025; 800-327-5060; email@example.com; www.robinairhvac.com.