Goplus Air-Operated Vacuum Pump 4.2 CFM — Portable Venturi HVAC/R Pump for R134a & R12, Includes Fittings

This compact Venturi-style vacuum pump uses compressed air to create a powerful vacuum in under two minutes, making it a fast, portable solution for evacuating moisture and air before refrigerant charging. Lightweight and simple to use, the pump is designed for automotive R134a and R12 service as well as domestic air conditioners, refrigerators, and freezers. It ships with the essential fittings so you can connect to service ports and start evacuating right away.

How fast and powerful is this air-operated vacuum pump?

The Goplus AT4280 produces a 4.2 CFM equivalent vacuum flow using an air-driven Venturi mechanism, designed to reach service vacuum levels quickly. Typical setups pull a full vacuum in less than two minutes when supplied with adequate shop air, saving time compared with slow manual methods.

• Rated 4.2 CFM equivalent performance
• Reaches service vacuum in under two minutes with proper air pressure
• Venturi design avoids electrical motors—ideal for mobile or shop use

What systems and refrigerants is it compatible with?

Built for HVAC/R service, this pump works with automotive air conditioning systems using R134a and legacy R12, plus household air conditioners, refrigerators, and freezers. Use it to evacuate lines and components before charging refrigerant to help reduce moisture and contamination.

• Compatible with R134a and R12 automotive systems
• Suitable for small residential AC units, fridges, and freezers
• Includes fittings to adapt to common service ports

How easy is it to set up and operate?

Operation requires only a compressed air source and the included fittings — no electricity, pump oil, or complicated assembly. Clear instructions make hookup straightforward: connect the air line, attach service hoses, and open valves to let the Venturi draw a vacuum.

• Plug-and-play operation with included fittings
• No oil changes or electrical hookup required
• Lightweight (approx. 0.99 lb) for portability and field work

What should I know about durability and maintenance?

With few moving parts and a solid Venturi build, maintenance needs are minimal compared with motor-driven pumps. Periodic inspection of fittings and ensuring clean compressed air will preserve performance and extend service life.

• Simple, low-maintenance Venturi mechanism
• Inspect seals and fittings regularly for leaks
• Use clean, dry shop air to prevent contamination

Who is this for: The Goplus air-operated vacuum pump is ideal for mechanics, HVAC technicians, and DIYers who need a fast, portable evacuation tool without electrical power. It suits mobile service vans, small shops, and homeowners who perform refrigerant charging and want a reliable, easy-to-use vacuum solution compatible with R134a and R12 systems.