SEICETEC 3.5 CFM HVAC Vacuum Pump — 1/4 HP Compact Single-Stage, 5 Pa Ultimate Vacuum

The SEICETEC 3.5 CFM 1/4 HP HVAC Vacuum Pump is a compact single-stage pump built to evacuate HVAC and automotive AC systems quickly and reliably.

This compact vacuum pump pairs a 1/4 horsepower copper motor with a robust die-cast aluminum body to give technicians consistent suction and long service life. Designed for service bays, mobile technicians, and home HVAC repairs, it balances portability with the capacity to achieve deep vacuums fast. Built-in protection features and easy service points reduce downtime while the noise-attenuated design keeps operation reasonably quiet in crowded garages.

How fast and deep does this pump evacuate systems?

The pump delivers a steady 3.5 cubic feet per minute (CFM) flow powered by a 1/4 HP motor at 1440 RPM. In normal conditions it can reach an ultimate vacuum around 5 Pa in roughly three minutes, making it suitable for most evacuation and dehydration tasks before charging refrigerant.

• 3.5 CFM continuous flow for efficient evacuation
• 1/4 HP motor running at 1440 RPM for stable suction
• Ultimate vacuum approx. 5 Pa achievable in ~3 minutes
• Single-stage architecture ideal for general HVAC and automotive use

Which refrigerants and fittings does it support?

This pump is compatible with common refrigerants used in residential and automotive systems, including R134a, R12, R22, and R502. For R410A systems it can be used when the correct adapter is fitted; standard intake ports are supplied to connect to a wide range of service hoses and manifolds.

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

What measures protect the pump and make maintenance easier?

The SEICETEC pump includes several built-in protections and accessible maintenance points to extend service life and simplify routine care. Motor overload protection prevents electrical damage, while filtration elements keep contaminants out of the pumping chamber and oil from polluting the exhaust.

• Motor overload protection to prevent burnout
• 304 stainless steel inlet filter blocks debris before the chamber
• Exhaust cotton filter captures oil mist and airborne particles
• Clear oil sight glass and bottom drain valve for quick oil checks and changes

How durable and quiet is this pump in workshop conditions?

The housing is a single-piece die-cast aluminum design that resists corrosion and helps dissipate heat during extended use. A four-pole pure copper motor contributes to long-term reliability, while the integrated cooling fan and anti-slip base keep operating noise around 65 dB and the unit stable on benches or vehicle floors.

• Die-cast aluminum body for heat management and durability
• Four-pole copper motor engineered for repeated use
• Approximately 65 dB operation with cooling fan
• Carry handle and compact footprint for easy transport

Who is this for? Technicians, HVAC contractors, mobile mechanics, and serious DIYers who need a portable, dependable vacuum solution will find the SEICETEC 3.5 CFM pump well suited to routine evacuation and service tasks. It’s optimized for shops and fieldwork where a balance of performance, durability, and straightforward maintenance matters. If you require faster multi-stage deep vacuums for specialty refrigeration, consider a multi-stage unit, but for everyday HVAC and automotive AC evacuation this model offers a strong mix of capability and value.