HVAC Shop Blog

Reading a manifold gauge correctly is a foundational skill that separates confident diagnosis from guesswork. This step-by-step guide covers gauge layout and scales, superheat and subcooling calculation, and how to interpret abnormal pressure readings to diagnose what's actually happening in the system.

Choose the right Testo Smart Probes for Aussie jobs—115i, 549i, 605i, 410i. See starter loadouts, kit vs individual buys, and faster Smart App reports.