VEVOR 3.5 CFM Vacuum Pump — 1/4 HP Single-Stage Rotary Vane, 5 Pa Ultimate Vacuum, Oil Included

VEVOR’s 3.5 CFM single-stage rotary vane vacuum pump is a compact, high-output HVAC service tool designed to evacuate refrigerant lines, perform resin degassing, and support automotive and home air-conditioning maintenance.

This vacuum pump pairs a 1/4 HP motor with a 3.5 CFM flow rate and a low ultimate vacuum to remove moisture and non-condensable gases from refrigeration and HVAC systems. Built for technicians and DIYers, it includes user-friendly features like a visible oil window, an included bottle of vacuum oil, and standard ports that fit common gauges and hoses. The pump’s cooling fan and 4-pole high-torque motor make it suitable for repeated service work across automotive A/C units, small chillers, and resin degassing setups.

How fast and deep can this pump evacuate an HVAC or automotive system?

The VEVOR pump delivers a 3.5 CFM (cubic feet per minute) displacement and reaches an ultimate vacuum down to about 5 Pa, enabling efficient evacuation of lines and components. Its single-stage rotary vane design balances speed and affordability for low- to medium-load jobs.

• 3.5 CFM displacement for quicker evacuation of typical A/C circuits
• Ultimate vacuum approximately 5 Pa for moisture and gas removal
• 1720 RPM motor speed tuned for steady vacuum performance

Which refrigerants and system sizes is this vacuum pump compatible with?

This unit is compatible with common refrigerants used in automotive and light commercial HVAC, including R134a, R22, and R410a systems. The pump’s 1/4" SAE and 1/2" ACME ports allow connection to standard manifold gauges and vacuum hoses for low-tonnage servicing.

• Compatible with R134a, R22, and R410a applications
• Ports: 1/4" SAE for gauges and 1/2" ACME for service fittings
• Sized for automotive systems, split systems, and small refrigeration units

What features make this pump easy and safe to use during service tasks?

The VEVOR pump includes practical features that simplify monitoring and maintenance: a visible oil sight window to check lubricant level, a supplied 0.35 qt (330 ml) bottle of vacuum oil to get started, and an internal cooling fan to prevent overheating during extended runs. The compact footprint and handle make it portable between job sites.

• 0.27 qt (260 ml) oil capacity with sight window for quick checks
• Includes 0.35 qt (330 ml) vacuum oil for initial setup
• Cooling fan and 4-pole motor for steady, reliable operation

Can this vacuum pump be used beyond HVAC, such as for resin degassing or woodworking?

Yes — the pump’s vacuum depth and steady flow make it suitable for resin degassing, wood stabilization, and other small-batch vacuum tasks. It’s well-suited to hobbyists and small shops that need a dependable vacuum source for both maintenance and production processes.

• Effective for resin degassing and small-scale vacuum casting
• Useful for wood stabilizing and other moisture-reduction tasks
• Compact design fits benches, service carts, and workbenches

Who this is for: Technicians, mobile A/C servicemen, HVAC contractors, and hobbyists who need a reliable, cost-effective vacuum pump for evacuating automotive and light commercial refrigeration systems, plus occasional resin degassing or woodworking vacuum tasks. Choose this VEVOR model if you want a portable pump with straightforward connections, visible oil monitoring, and sufficient flow and vacuum depth for low- to medium-tonnage jobs.