For an A/C tech, a quality set of manifold gauges is an important diagnosis and service tool. We’ve referenced the issue of brass vs aluminum within the text of a previous blog, but since we’re still receiving questions about it,
Manifold Gauge Tutorial Guide
Before servicing a vehicle, confirm system refrigerant type. Cross contamination of refrigerants can cause damage to A/C system, service tools and equipment. GENERAL MANIFOLD INFORMATION: The right (red) side of the manifold is the high side and the red gauge