SEICETEC 3.5 CFM HVAC Vacuum Pump — 1/4 HP Single-Stage, Portable with Oil Sight Glass

The SEICETEC 3.5 CFM 1/4 HP HVAC Vacuum Pump is a compact single-stage evacuator that delivers steady 3.5 CFM flow and rapid deep vacuum for HVAC and automotive air conditioning service.

Designed for technicians and DIYers who need a reliable, portable pump for evacuating refrigerant lines, the SEICETEC model combines a sturdy die-cast aluminum body with a copper motor and straightforward controls. It’s built to handle common refrigerants, withstand workshop use, and simplify routine maintenance. The pump balances performance and noise control so you can run extended evacuation cycles without excessive vibration or overheating.

How quickly and deeply will this pump evacuate a system?

The SEICETEC pump produces a consistent 3.5 CFM flow powered by a 1/4 HP motor at 1440 RPM, allowing it to pull a deep vacuum efficiently. In typical service conditions it can reach an ultimate vacuum around 5 Pa in about three minutes, making it suitable for most HVAC and automotive AC evacuation tasks.

• 3.5 CFM continuous evacuation rate for steady performance
• 1/4 HP, 1440 RPM single-stage motor for predictable drawdown
• Ultimate vacuum ~5 Pa achievable in roughly three minutes
• Built-in overload protection to reduce motor stress

Which refrigerants and connections does this pump support?

This unit is compatible with common refrigerants used in residential and automotive systems, and accepts standard service fittings. For R410A use, an adapter is required; otherwise the included intake ports fit most hoses and gauges without modification.

• Works with R134a, R12, R22, R502 out of the box
• R410A compatible when using a 5/16" adapter (adapter not included)
• Standard 1/4" SAE and 1/2" Acme intake ports for broad compatibility

What features help keep the pump clean and protected during use?

The pump incorporates filtration and protective circuits to extend service life and improve output quality. A stainless inlet filter stops debris before it reaches the pumping components, while an exhaust cotton filter captures oil mist and contaminants to minimize emissions.

• 304 stainless steel inlet filter prevents particulate ingress
• Exhaust cotton filter reduces oil mist and airborne impurities
• Motor overload protection guards against overheating and current spikes

How easy is it to operate and maintain in a shop environment?

SEICETEC designed everyday conveniences into the pump so routine tasks are quick and safe. An oil sight glass, bottom drain valve, and accessible fill port make oil checks and changes straightforward, while the integrated handle and non-slip base simplify transport and stable placement.

• Clear oil sight glass for quick fluid level checks
• Bottom drain valve and oil fill port for fast maintenance
• Carry handle, cooling fan, and ~65 dB operating noise for shop comfort

Who is this for: The SEICETEC 3.5 CFM 1/4 HP vacuum pump is aimed at HVAC technicians, mobile AC specialists, and knowledgeable DIYers who need a durable, serviceable pump for evacuating lines on residential systems, refrigeration service, or automotive air conditioning. It suits users who want dependable drawdown, easy maintenance, and broad refrigerant compatibility in a portable package without industrial complexity.