Kozyvacu Single-Stage Rotary Vane Vacuum Pump TA350 - Quiet 3.5 CFM

In this review of the Kozyvacu Single-Stage Rotary Vane Vacuum Pump (TA350) we look at who gets the most value from a compact, quieter 3.5 CFM unit and why it might be the right tool for refrigeration, resin degassing or lab use. The bottom line: the TA350 is aimed at hobbyists, small shops and light commercial users who need a reliable, portable vacuum pump with a solid all-copper motor and visible oil monitoring; its combination of a 3.5 CFM flow rate and 150 micron ultimate vacuum makes it especially useful for HVAC service and degassing tasks where consistent pull and quieter operation matter.

Key Features

• Flow Rate: The 3.5 CFM flow delivers steady evacuation for small to medium refrigerant recharge jobs and resin degassing without long wait times.
• Ultimate Vacuum: A 150 micron ultimate vacuum provides the deep pull needed for effective moisture removal in refrigeration and epoxy casting.
• Noise Reduction: The included noise reducer helps the pump run quieter, which is a real benefit in workshops or lab spaces where lower noise improves comfort.
• Durable Motor: The all-copper wired motor is more robust than typical aluminum-wired alternatives, promising longer service life under regular use.
• Easy Monitoring: The oil viewing window and supplied bottle of vacuum pump oil make it simple to check and maintain proper oil level and quality to protect the pump.
• Versatile Inlets: With 1/4 flare and 1/2 male inlet ports the pump adapts to common refrigeration and vacuum fittings used in HVAC and laboratory setups.

Who It's For

The TA350 is best for HVAC technicians, automotive AC hobbyists, small labs, craft resin users and small wineries that need a compact vacuum solution for refrigeration maintenance, epoxy or wine degassing, thermoforming and packaging. Its quieter operation and visible oil window are practical for environments where prolonged operation occurs.

Users who need heavy industrial throughput or continuous, high-duty-cycle vacuum for large manufacturing lines should consider a larger commercial pump. Also, those requiring specialized laboratory certifications for clinical or critical medical procedures should verify compliance needs before purchase.

Pros & Cons

Pros

• Solid 3.5 CFM flow and 150 micron ultimate vacuum suitable for HVAC and degassing tasks.
• All-copper wired motor for improved durability and longer service life.
• Oil viewing window plus a bottle of oil included simplifies maintenance and reduces initial setup time.
• Noise reducer reduces operational noise compared with basic pumps, making it better for small shops.

Cons

• Not intended for large-scale industrial continuous-duty applications; capacity is aimed at light commercial and household use.
• Runs on 110V/60Hz which may limit use in regions with different mains standards without an appropriate transformer.

Specifications

Our Verdict

The Kozyvacu TA350 is a well-rounded choice for technicians, hobbyists and small labs that need a dependable, quieter 3.5 CFM vacuum pump with a strong all-copper motor and convenient oil monitoring. It delivers good value for routine HVAC maintenance, epoxy and wine degassing or light laboratory tasks, but those needing heavy continuous-duty or non-110V operation should consider a larger or region-specific model.

Frequently Asked Questions

Does the pump come with oil?
Yes, the pump includes one bottle of vacuum pump oil and an oil viewing window to monitor level and quality.

What inlet fittings are provided?
The TA350 offers both a 1/4 flare and a 1/2 male inlet to fit common refrigeration and vacuum hoses.

Is this pump suitable for continuous industrial use?
No, it is designed for light commercial and household applications; heavy continuous industrial duty would require a larger commercial pump.