best HVAC pump for AC servicing

2.5 CFM 1/6 HP One Stage Vacuum Pump Air Conditioning HVAC Brand: Pittsburgh CFM (Cubic Feet per Minute): 2.5 CFM Horsepower: 1/6 HP Vacuum Level: Down to 75 microns Pump Stage: One stage Housing Material: Durable die cast aluminum Ports Compatibility: Dual ports for R134A and R12/R22 systems Protection Features: Thermal and current overload…