HVAC Shop Blog

Proper evacuation is the difference between a system that lasts and one that fails early. This step-by-step guide covers the complete Mastercool vacuum pump evacuation procedure: pre-job checks, starting the cycle, reading the micron gauge correctly, troubleshooting plateaus and leaks, and interpreting the decay test before you charge. Written for ARCtick-licensed technicians and apprentices learning the right habits from the start.

Running refrigerant recovery correctly is more than just connecting a machine and pressing start. This step-by-step guide covers the full Mastercool recovery workflow: pre-job safety checks, high and low-side connection sequence, choosing liquid or vapour recovery mode, monitoring the active cycle, and completing post-recovery documentation to stay ARCtick compliant.