Collection: Vacuum Gauges for HVAC Pros – Accurate & Reliable

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

1. Mount on the system (far from the pump, post core-removal tools) for a true system reading.
2. Pull down with short, large-bore vacuum hoses; keep connections clean and oil-free.
3. Target 300–500 microns (or per OEM). Close valves and run a standing vacuum test (decay test).
4. 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.

Browse by Brand

Fieldpiece, Testo, Robinair, Imperial, Yellow Jacket.