VIVOHOME HVAC Vacuum Pump 1/2 HP 5 CFM Dual-Stage (110V) – 0.3 Pa Ultimate, Portable with Oil View

The VIVOHOME 110V 1/2 HP dual-stage rotary vane vacuum pump is a portable HVAC service tool that pulls a deep 0.3 Pa vacuum at 5 CFM for fast, reliable moisture and air removal from refrigeration and air-conditioning systems.

This compact, die-cast aluminum pump pairs a 375W (1/2 HP) two-pole copper motor with dual-stage pumping for rapid evacuation and stable performance. Built with safety features such as motor current protection, coarse stainless intake filtration and an exhaust cotton oil mist layer, the unit is engineered for routine AC maintenance, system evacuation before recharge, and diagnostics across common refrigerants. Thoughtful details — from the oil-view window and bottom drain valve to low-noise operation and an ergonomic handle — make it well suited for field technicians and DIYers working on residential and light commercial systems.

How quickly does this pump evacuate an air-conditioning system?

The VIVOHOME dual-stage pump is designed for speed and consistency. Rated at 5 CFM flow with a 1/2 HP motor running at 2880 RPM, it can reach an ultimate vacuum of about 0.3 Pa in roughly three minutes under typical conditions.

• Flow rate: 5 cubic feet per minute (CFM) for efficient evacuation.
• Motor spec: 1/2 HP (375W) at 2880 r/min for steady performance.
• Ultimate vacuum: ~0.3 Pa achieved rapidly for effective moisture removal.

Which refrigerants and fittings does this pump support?

This pump is compatible with most common refrigerants used in residential and light commercial service. It accepts multiple intake fittings to adapt to different service ports and can handle R410a with a simple adapter addition.

• Refrigerants: R134a, R12, R22, R502 supported; R410a usable with a 5/16" adapter (not included).
• Fittings: Both 1/4" SAE and 1/2" Acme intake options for flexible hookups.
• Adapter note: Add a 5/16" adapter when working with R410a systems.

What safety and maintenance features protect the pump during use?

The unit integrates protections to prolong lifespan and reduce service interruptions. Motor current protection guards against overload or phase loss, while multiple filtration layers keep oil and contaminants out of the pump chamber.

• Motor current protection prevents damage during overloads or phase loss.
• 304 stainless coarse filter stops large contaminants at the intake.
• Exhaust has a cotton layer filter to trap oil mist and impurities.

How practical is this pump for field work and routine service calls?

VIVOHOME built this pump with portability and user convenience in mind. The housing and handle balance durability with a lightweight profile, while low operating noise and intuitive service points simplify on-site use and maintenance.

• Housing: one-piece die-cast aluminum for drop resistance and lighter weight.
• User controls: ergonomic grip, clear oil viewing window, simple ON/OFF switch.
• Serviceable parts: bottom oil drain valve for quick oil changes and a cooling fan for lower operating temperature.
• Noise: approximately 65 dB for less disruptive operation on job sites.

Who is this for? The VIVOHOME 110V 1/2 HP dual-stage vacuum pump is aimed at HVAC technicians, contractors, and informed DIY enthusiasts who perform evacuation, leak diagnosis, or refrigerant servicing on residential and light commercial systems. It’s particularly useful for anyone needing a balance of fast pull-down, rugged portability, and protective features that preserve pump life while handling a range of common refrigerants. For R410a work, plan to purchase the appropriate 5/16" adapter separately.