DEEP VACUUM & FAST AIR REMOVAL: The VIVOHOME 1 HP dual-stage vacuum pump reaches a 15-micron vacuum quickly; 9.6 CFM flow and 1728 RPM high-torque copper motor ensure rapid air removal, preventing ice buildup and corrosion in HVAC and automotive A/C system ONE KIT FOR PROS & SERIOUS DIYERS: The AC vacuum pump kit handles larger HVAC systems (R22/R410A) and high-demand automotive A/C repairs (R134a) efficiently; A go-to solution for on-site servicing, mobile repairs, and routine HVAC maintenance CLEAN, QUIET & SAFE OPERATION: Universal 1/4", 3/8" SAE, and 1/2" ACME inlets fit R134a, R410A, R22, R12, and R502; Anti-backflow valves limit oil backflow, while dual exhaust filters reduce oil mist and keep noise ≤70 dB for cleaner, quieter workspace STABLE & RELIABLE PERFORMANCE: The heavy, solid build minimizes vibration for smoother operation; Cooling fins and a high-volume internal fan prevent overheating, ensuring stable, continuous performance for extended HVAC or professional service jobs PRECISE DIAGNOSTICS, UNMATCHED DURABILITY: Get accurate readings every time; Shock-resistant core and rubber case protect against drops; Built-in hanging hook allows hands-free use, and easy-access calibration screw maintains precision with a simple twist COMPLETE KIT FOR HVAC & AUTO A/C: This vacuum pump kit includes a 9.6 CFM pump, 2 vacuum oils, manifold gauge set, 2 R134a quick couplers, 4 color-coded hoses, adapters (2×1/4"M to 5/16"F, 1×1/4"M to 1/2"F), and an R134a self-sealing can tap NOTE: The quick couplers ship in the open position; Turn the knob to closed before connecting; Not for use with A2L/A2 refrigerants This 9.6 CFM vacuum pump kit is crafted for HVAC maintenance, offering a user-friendly experience. It ensures easy operation, lasting durability, and dependable performance. Ideal for both residential and commercial AC systems, it makes every task feel effortless, enhancing your overall convenience.