Powerful Performance: With a high-output motor, this single-stage rotary vane vacuum pump delivers a 3.5 CFM flow rate and 5 Pa ultimate vacuum. Ideal for HVAC services, it brings thorough cleaning and optimal results every time Stable, Reliable Operation: Driven by a 4-pole high-torque motor, this air conditioning vacuum pump provides long-lasting power and efficiency. The built-in cooling fan avoids overheating, ensuring reliable performance even during extended use Exceptional Compatibility: Designed with 1/4" SAE and 1/2" ACME ports, this HVAC vacuum pump is compatible with automotive and low-tonnage R22, R134a, and R410a systems. Whether you're servicing cars or home HVAC units, the job gets done with ease User-Friendly Design: Equipped with a 0.27 qt. (260 ml) oil capacity and a visible oil window, monitoring oil levels has never been easier. Plus, we've included a bottle of 0.35 qt. (330 ml) vacuum oil to get you started Versatile for Any Job: Whether you're working on refrigeration maintenance, HVAC repairs, resin degassing, wood stabilization, or more, this vacuum pump is ideal for both commercial and residential applications