Mastercool 90058-5A-EU 18V Cordless 1.5 CFM Vacuum Pump for HVAC

Mastercool 90058-5A 18V Cordless 1.5 CFM 2-Stage Vacuum Pump (5Ah Kit)

The Mastercool 90058-5A is a professional 18V cordless 2-stage vacuum pump delivering powerful evacuation performance without the need for mains power. With a 1.5 CFM flow rate and deep-vacuum capability down to 15 microns, it delivers the performance of a traditional pump in a compact, fully portable design.

Engineered for HVAC and refrigeration engineers, this unit is ideal for on-site servicing, rooftop work, and remote installations where access to power is limited.

Key Features & Benefits

• 18V cordless operation – complete freedom from power cables and generators
• 2-stage rotary vane pump – achieves deep vacuum levels for proper system evacuation
• 1.5 CFM (42.5 L/min) flow rate – efficient performance for small to medium systems
• Ultimate vacuum: 15 microns – suitable for professional HVAC/R applications
• Oil mist-free exhaust system – cleaner operation and reduced contamination risk
• Air-cooled motor – reliable operation in high-temperature environments
• Reinforced base – improved durability for site use
• Compact and lightweight design – easy transport and storage

Designed for Field Engineers

• Perfect for mobile HVAC/R servicing and maintenance
• Ideal for split systems, small commercial installs, and repair work
• Excellent for rooftop and outdoor applications where power is unavailable

What's Included

• 18V cordless vacuum pump
• 5.0Ah lithium-ion rechargeable battery
• Battery charger (110–240V compatible)
• Adapter sleeve for battery connection
• 1/4" SAE inlet connection

Specifications

• Model: 90058-5A-EU
• Flow Rate: 1.5 CFM (42.5 L/min)
• Stages: 2-stage rotary vane
• Ultimate Vacuum: 15 microns
• Motor: 18V DC, 90W
• Battery: 18V Li-ion, 5.0Ah
• Oil Capacity: 3.5 oz
• Connection: 1/4" SAE
• Weight: Approx. 2.3kg
• Brand: Mastercool

Operation & Maintenance

• Always use vacuum pump oil – running without oil will damage the unit
• Check the oil level via sight glass before operation
• Change oil regularly to maintain deep vacuum performance
• Use the gas ballast function during initial evacuation to reduce moisture contamination

Safety Notes

• For use by qualified HVAC/R personnel only
• Avoid exposure to refrigerant vapours during operation
• Do not operate on pressurised systems
• Use only Mastercool-approved batteries for safe operation

Ideal Applications

• HVAC system evacuation and commissioning
• Refrigeration servicing
• Automotive A/C work
• Remote or off-grid installations

Why Choose a Cordless Vacuum Pump?

Cordless vacuum pumps allow engineers to work faster and more efficiently by eliminating the need for power access. This makes them ideal for service work in confined spaces, rooftops, and outdoor environments, while still delivering professional evacuation performance.

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