Vacuum Pumps for HVAC & Refrigeration

23 products

Reliable, high-vacuum pumps for HVAC/R evacuation.

Achieve faster pull-downs and deep vacuums with our range of 2-stage vacuum pumps. Whether you are commissioning residential splits or large commercial VRF systems, we stock pumps designed for Australian conditions from trusted brands.

Quick Guide: Sizing Your Vacuum Pump

Application Recommended Flow Best Setup
Residential Splits 40 - 100 L/min (2-4 CFM) Standard 2-Stage Pump + Micron Gauge.
Large Commercial / VRF 150 - 300+ L/min (6-12 CFM) High Flow Pump + Wide-Bore Hoses + Core Removal Tools.
Automotive A/C 40 - 80 L/min Compact Single or Dual Stage Pump.

The "Fast Evacuation" Formula

A pump alone isn't enough. To speed up your evacuation time by up to 50%, follow these rules:

  • Remove Cores: Valve cores restrict flow by 90%. Always use a Core Removal Tool.
  • Use Large Hoses: 1/4" hoses are for charging, not evacuating. Use a 3/8" or 1/2" Evacuation Hose.
  • Verify with Microns: Analogue gauges are inaccurate for vacuum. Use a Digital Micron Gauge to prove you hit 500 microns.
  • Change Oil: Wet/cloudy oil kills pump performance. Change your Vacuum Oil frequently.

Common Questions

Do I really need a micron gauge?

Yes. An analogue gauge cannot measure deep vacuum accurately. A digital micron gauge is the only way to prove you have removed moisture and non-condensables down to the required level (usually 500 microns).

How often should I change vacuum pump oil?

Ideally, every job. At a minimum, change it immediately if the oil looks cloudy or milky, as this indicates moisture saturation which destroys the pump's ability to pull a deep vacuum.

What is the difference between Single and 2-Stage pumps?

2-Stage pumps pull a much deeper vacuum (essential for refrigeration/HVAC drying) by using a second stage to clean up the exhaust of the first. Single-stage pumps are generally not recommended for deep evacuation work.

HVAC Shop Australia (ABN: 98 351 143 900) | Support: 0412 333 115
Compliance: Work involving refrigerant emissions generally requires an ARCtick Licence.

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