Three Situations Where Refrigerant Charging Precision Matters

Precision matters most when conditions are toughest: Tight mechanical rooms with unreliable signal, critical refrigeration work with zero margin for error and uneven rooftops where surfaces aren’t level but measurements must be. This video shows how the CPS Products CC220 Compute-a-Charge refrigerant scale helps technicians […]

Why Cleaning Your Vacuum Gauge Sensor Matters

Vacuum readings are only as reliable as a clean sensor. This quick how-to shows technicians how to properly clean the CPS Products VG200 sensor to prevent oil vapor and contaminants from skewing micron readings—so evacuation decisions are based on accurate data. Follow the simple steps […]

2-Valve vs. 4-Valve Digital Manifolds: Which Works Best?

As digital tools replace analog gauges, manifold design has become a workflow decision—not just a tool preference. This guide compares 2-valve and 4-valve digital manifolds across real field tasks such as charging, evacuation, decay testing and recovery, showing how valve configuration affects connections, pressure loss […]

Best Practices for HVAC System Evacuation

Pulling a vacuum isn’t the same as completing an evacuation and moisture left behind can quietly damage a system over time. This guide explains effective degassing and dehydration, the most common evacuation mistakes and how to verify results using micron stability and decay behavior instead […]

Vacuum Gauge Calibration Explained

A vacuum gauge can display a micron reading and still be wrong. As systems become more sensitive, calibration and traceability matter more for proper evacuation and moisture removal. This guide explains NIST-traceable calibration, why gauges drift over time and the difference between calibration, verification and […]

How to Avoid Undercharging and Overcharging Refrigerant

Mixed refrigerants, variable-speed equipment and low-GWP alternatives have tightened charging tolerances. This guide explains why blended refrigerants behave differently, what causes undercharging and overcharging in modern systems and the repeatable charging practices technicians can use to protect system performance and compressor life. Download