Vacuum Gauges for HVAC Pros – Accurate & Reliable

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HVAC Vacuum Gauges (Micron Gauges) — Accurate & Job-Ready

Tired of sketchy readings wasting time on site? Our HVAC vacuum gauges give rock-solid micron numbers so you can hit targets, prove a dry system, and charge with confidence. Built for Aussie conditions—from Brisbane humidity to Melbourne winters—they’re tough, precise, and ready for daily use.

Shop gauges trusted Australia-wide: Fieldpiece, Testo, Robinair, CPS, Imperial, Yellow Jacket and more. Perfect for split systems, ducted installs, commercial refrigeration, and auto A/C evacuation checks.

Level up your setup: pair your gauge with a high-flow vacuum pump for faster pulls, use manifold gauges for full diagnostics, add leak detection to prevent call-backs, and keep interiors clean with cleaning bags when working indoors.

Why Techs Choose These Gauges

Accurate micron readings for reliable evacuation and documentation.
Rugged housings and sealed sensors for real job-site abuse.
Wide compatibility with vacuum pumps, core tools, and large-bore hoses.
Top brands: Fieldpiece, Testo, Robinair, CPS, Imperial, Yellow Jacket.

Quick Guide: Using a Digital Micron Gauge

Mount on the system (far from the pump, post core-removal tools) for a true system reading.
Pull down with short, large-bore vacuum hoses; keep connections clean and oil-free.
Target 300–500 microns (or per OEM). Close valves and run a standing vacuum test (decay test).
Interpret results: fast rise = leak; slow rise that plateaus > 1000 microns = moisture; stable = good to charge.

Tip: Open the pump’s gas ballast early to drive off moisture, and change vacuum oil when cloudy.

Why Buy From HVAC Shop?

Fast shipping AU-wide — tools in your hands sooner.
Price-match on identical stock items.
Trade discounts for contractors.
Warranty & local support you can actually reach.

FAQs

Do I still need a micron gauge if I have a good pump?
Yes. The pump removes air and moisture; the gauge verifies system dryness and depth of vacuum so you can charge with confidence.

What micron number should I hit?
Most HVAC systems are considered ready to charge at ≤ 500 microns after a stable standing test. Always follow the equipment manufacturer’s spec.

Where should I connect the micron gauge?
On the system (not at the pump), ideally after core-removal tools and as far from the pump as practical to avoid false low readings.

Can I use the same gauge for auto A/C?
Absolutely. A digital micron gauge is essential anywhere you need to confirm deep vacuum before charging.

How do I look after the gauge?
Keep fittings clean and dry, cap ports when not in use, avoid oil contamination, and store in a protective case.