VIVOHOME 110V 1/2 HP 5 CFM Dual Stage Rotary Vane HVAC Air

The VIVOHOME 110V Dual Stage Vacuum Pump is designed for DIYers and technicians tackling air conditioning diagnosis, moisture evacuation, and refrigerant recharges. Powered by a two-pole pure copper 1/2 HP (375W) motor turning at 2880 r/min, this unit delivers a 5 CFM flow rate. It evacuates air and moisture efficiently, reaching an ultimate vacuum level of 0.3 Pa in approximately 3 minutes.

For setup flexibility, the pump features both 1/4-inch SAE and 1/2-inch Acme intake fittings. It is ready out of the box for common refrigerants including R134a, R12, R22, and R502. If you work on R410a systems, you can hook it up by adding a standard 5/16-inch adapter. Safe operation is reinforced by built-in motor current protection, which guards the machine against overloads or phase loss during its duty cycle.

Daily maintenance and handling are kept simple. A one-piece die-cast aluminum housing shields internal components while keeping the unit portable via an ergonomic carry handle. A transparent viewing window lets you check oil clarity and volume instantly, while a bottom drain valve simplifies routine fluid changes. Internal cleanliness is maintained through a 304 stainless steel coarse intake screen and an exhaust cotton filter that traps oil mist during operation at around 65 dB.

Keep in mind that while it offers broad compatibility, the 5/16-inch adapter required for R410a mini-split systems is not included in the box. The unit also requires a standard 110V power source and relies on regular oil monitoring through its sight glass to stay in working order.

Verdict: This dual-stage pump is a dependable choice for anyone needing to pull deep vacuums on automotive or residential AC systems. It provides solid flow performance, essential safety protections, and clean dual-port connectivity for standard HVAC servicing.

• Power: 1/2 HP (375W), 110V
• Motor Speed: 2880 r/min
• Flow Rate: 5 CFM
• Ultimate Vacuum: 0.3 Pa
• Housing Material: One-piece die-cast aluminum
• Motor Type: Two-pole pure copper
• Intake Fittings: 1/4-inch SAE and 1/2-inch Acme
• Noise Level: Approximately 65 dB
• Refrigerant Compatibility: R134a, R12, R22, R502 (R410a with optional adapter)

A great fit if you:

• Need to evacuate moisture and air from automotive or home AC systems using R134a, R12, R22, or R502.
• Want a fast dual-stage vacuum pump that reaches 0.3 Pa in a few minutes.
• Prefer a machine with visible oil level windows and simple drain ports for easy upkeep.
• Value built-in motor protection against overloads and phase loss.

Consider something else if you:

• Need native R410a support without purchasing a separate 5/16-inch adapter.
• Require a 220V or cordless battery-powered vacuum pump.

What refrigerants can this vacuum pump be used with?
It is directly compatible with R134a, R12, R22, and R502. It can also service R410a systems if you use a 5/16-inch adapter, which is not included.

What inlet ports come on the unit?
The pump is equipped with both 1/4-inch SAE and 1/2-inch Acme intake fittings to accommodate standard service hoses.

How loud is the pump during operation?
The pump operates at a sound level of approximately 65 dB and includes a built-in cooling fan and non-slip base to maintain stable operation.

How do I check and change the pump oil?
You can monitor the fluid level through the clear oil viewing window, add oil via the top fill port, and empty it using the dedicated bottom drain valve.