Features Details Powerful Performance: With a robust pure copper motor, our 4CFM single-stage rotary vane vacuum pump delivers fast, efficient evacuation, reaching an impressive 5Pa ultimate vacuum. Ideal for HVAC services, it ensures thorough system cleaning, making your job quicker and more effective. Stable, Reliable Operation: Driven by a high-performance 4-stage pure copper motor, this air conditioning vacuum pump offers long-lasting power and efficiency. The built-in cooling fan avoids overheating, ensuring consistent, reliable performance even during extended use. Exceptional Compatibility: Designed with 1/4" SAE and 1/2" ACME ports, this HVAC vacuum pump works seamlessly with a variety of systems, including automotive and smaller-tonnage R22, R134a, and R410a refrigerant 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. You'll always know when it's time for a top-up to keep things running smoothly. 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 HVAC maintenance, refrigerant system servicing, resin degassing, wood stabilization, or more, this vacuum pump automotive is ideal for both commercial and residential applications. With its broad compatibility with refrigerants, you can trust it to tackle any job with confidence.