HVAC Shop Blog
Vacuum Pump Buying Guide: 1-Stage vs 2-Stage, CFM Sizing, and Why Yours Won't Hold Vacuum
Choosing an HVAC vacuum pump takes more than comparing CFM. This guide explains single-stage and two-stage pumps, how hoses and micron gauges affect evacuation, and what to check when a system will not pull down or hold vacuum.
How to Set Up a Air Conditioner Vacuum Pump
Learn how to set up an air conditioner vacuum pump the right way with this practical step-by-step HVAC guide for tradies and DIYers. It covers the tools you need, how to connect hoses and gauges, when to change vacuum pump oil, how to run a proper decay test, and the common mistakes that can lead to moisture, leaks, and poor system performance.