Tools & Instruments

Manifold and digital gauges, micron gauge and evacuation, clamp meter, combustion analyzer, recovery machine and nitrogen.

6 guides

• Clamp Meter Techniques for HVAC
  Practical clamp-meter technique for HVAC — measuring running amps, catching inrush/LRA, the wire-wrap multiplier trick for tiny currents, and using the meter to check a run capacitor's microfarads.
• Combustion Analyzer Basics
  What a combustion analyzer measures in the flue, how O2/CO2/CO readings reveal whether a gas appliance is burning cleanly, and the field targets that separate a safe furnace from a CO problem.
• Digital Manifold vs Analog Gauges
  The practical differences between analog gauge manifolds and digital ones — accuracy, automatic superheat/subcooling, wireless probes, and where each still earns its place in the bag.
• Recovery Machines and the Nitrogen-Brazing Setup
  How a recovery machine pulls refrigerant out legally and efficiently, the push-pull method for big charges, and why you flow nitrogen through the lines while brazing to keep the system clean.
• The Micron Gauge and the 500-Micron Decay Test
  What a micron gauge measures, how to run the 500-micron decay test to prove a system is dry and leak-free, and how to read a rising vacuum to tell moisture from a leak.
• The Vacuum Pump and Evacuation Setup (Why Your Vacuum Stalls)
  The pump and the rig that get you to a deep vacuum fast — sizing the pump's CFM, why fresh oil and the gas ballast matter, core-removal tools and large-bore hoses, the right manifold connections, and the triple-evacuation/nitrogen-sweep technique that fixes a stalled pull-down.

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