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WISSCOOL 4.5 CFM Single-Stage HVAC Vacuum Pump, 1/4 HP

Wisscool

WISSCOOL 4.5 CFM Single-Stage HVAC Vacuum Pump, 1/4 HP

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9.2/10
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Highlights

  • Powerful Vacuum Pump: Wisscool vacuum pump delivers a flow of 4.5 CFM. Powered by 1/4HP(180w) 110V motor to ensure efficient and reliable performance. It maintains air conditioning systems by effectively removing moisture before refilling the refrigerant, perfect for those who want to self-diagnose or recharge their AC systems
  • Universal Compatibility: Our AC vacuum pump can be widely used for automotive refrigeration maintenance and HVAC repair, an effective tool for removing contaminants from air conditioning and refrigeration systems. Designed with 1/4" SAE and 1/2" ACME ports, this HVAC vacuum pump works seamlessly with a variety of systems, including automotive and smaller-tonnage R134a, R12, R22, R502 and R410a refrigerant systems
  • High-Efficiency Performance: Constructed with a sturdy aluminum alloy casing, this automatic AC vacuum pump effectively dissipates heat and withstands corrosion, ensuring longevity. Its intake filter provide efficient protection against impurities and oil mist, preserving peak performance
  • User-Friendly Air Conditioning Pump: Equipped with an oil reservoir featuring a practical sight glass and scale, this AC vacuum pump allows easy monitoring of oil levels and timely refills. Its nonslip handle enhances portability, facilitating transport and storage between tasks.Low-noise operation at approximately 65 dB, a built-in cooling fan, and a non-slip base guarantee comfortable portability and stable performance in various AC system
  • Package Information: Package includes one 4.5CFM ac vacuum pump, one bottle of 0.23 qt. (250 ml) vacuum oil to get started.Whether you're working on HVAC maintenance, refrigerant system servicing, resin degassing, wood stabilization, or more, this vacuum pump automotive is ideal for both commercial and residential applications

Why You'll Love It

  • Delivers 4.5 CFM flow powered by a 1/4 HP motor for evacuating air conditioning systems
  • Dual 1/4-inch SAE and 1/2-inch ACME inlet ports fit a wide range of refrigerant setups
  • Built-in sight glass with measurement scale simplifies checking and refilling pump oil
  • Sturdy aluminum alloy casing dissipates heat effectively and resists corrosion over time
  • Comes with a 250 ml starter bottle of vacuum oil for immediate setup
  • Runs at approximately 65 dB with a built-in fan and non-slip base for steady operation

Pros

  • +Includes 250 ml vacuum oil bottle
  • +Dual 1/4-inch SAE and 1/2-inch ACME ports
  • +Clear sight glass for oil monitoring
  • +Moderate 65 dB operating noise level
  • +Built-in cooling fan and nonslip base

Cons

  • -Single-stage design rather than two-stage
  • -Requires 110V standard outlet power source
  • -No manifold gauges or hoses included

Detailed Review

The Wisscool 4.5 CFM Single-Stage HVAC Vacuum Pump is designed for automotive air conditioning maintenance, residential refrigerant servicing, and workshop tasks like resin degassing or wood stabilization. Powered by a 1/4 HP (180W) 110V motor, it pulls out moisture and air contaminants before recharging refrigerant systems, making it a practical tool for DIYers and technicians working on HVAC equipment.

Port compatibility is a strong point on this unit, as it features both 1/4-inch SAE and 1/2-inch ACME intake ports. This allows connection to systems utilizing R134a, R12, R22, R502, and R410a refrigerants. The intake includes a filter to catch impurities and oil mist, helping keep internal parts running smoothly. Maintenance is straightforward thanks to an oil reservoir with an integrated sight glass and scale, letting you monitor levels and refill as needed.

For everyday handling, the pump utilizes an aluminum alloy body that aids in heat dissipation and resists corrosion. It operates at around 65 dB, supported by a built-in cooling fan and a non-slip base to minimize vibrations during extended runs. A non-slip top handle makes it easy to carry between vehicles, workbenches, and storage areas.

As a single-stage pump, it is geared toward standard evacuation and degassing jobs rather than deep laboratory-grade vacuums. The package includes a 250 ml (0.23 qt.) starter bottle of vacuum oil, though you will need to supply your own manifold gauges, charging hoses, and adapters for your specific vehicle or AC unit.

Verdict: The Wisscool 4.5 CFM vacuum pump is a dependable, budget-conscious choice for DIY mechanics and technicians needing a solid evacuation pump for automotive and small-tonnage HVAC systems.

Specifications

  • Flow Rate: 4.5 CFM
  • Motor Power: 1/4 HP (180W)
  • Voltage: 110V
  • Noise Level: Approximately 65 dB
  • Inlet Ports: 1/4-inch SAE and 1/2-inch ACME
  • Housing Material: Aluminum alloy
  • Refrigerant Compatibility: R134a, R12, R22, R502, R410a
  • Included Oil: 0.23 qt. (250 ml)

Who Should Buy It

A great fit if you:

  • Need to evacuate moisture and air from automotive or small HVAC systems before recharging
  • Work with refrigerants like R134a, R12, R22, R502, or R410a
  • Perform hobby crafts such as resin degassing or wood stabilizing
  • Want an easy-to-monitor pump with an oil sight glass and included starter oil

Consider something else if you:

  • Require a commercial two-stage vacuum pump for extreme deep-vacuum applications
  • Need a cordless, battery-operated pump for off-grid servicing
  • Want an all-in-one kit that already includes manifold gauges and hoses

FAQ

What comes in the box?
The package includes the Wisscool 4.5 CFM vacuum pump and one 0.23 qt. (250 ml) bottle of vacuum oil to get started.

What types of refrigerants can this pump work with?
It is designed to work with automotive and smaller-tonnage systems using R134a, R12, R22, R502, and R410a refrigerants.

How loud is this vacuum pump during operation?
The pump operates at a low-noise level of approximately 65 dB.

Can this pump be used for projects other than HVAC work?
Yes, it can be used for non-refrigerant tasks such as resin degassing and wood stabilization.

Product Details

BrandWisscool
ASINB0CXCLQZ7W

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