Collection: Manifold Gauge, AC Gauges & Air Conditioning Gauges

Precise diagnostics, charging, and commissioning tools from Testo, Imperial, Mastercool, Fieldpiece, and more.

When you’re pulling down, charging, or diagnosing a system, your manifold and refrigerant gauges are the tools you trust most. This range brings together analogue and digital manifold gauge sets, replacement AC gauges, vacuum gauge accessories, and service kits from brands tradies actually use on site.

Every set is built for real Australian conditions, from humid coastal installs in Brisbane through to frosty winter starts in Melbourne. Pair the right manifold gauge set with a solid vacuum pump and refrigerant scale and you’ll cut call-backs, speed up commissioning, and hit targets the first time.

What You’ll Use These Gauges For

Manifold and refrigeration gauges in this collection are designed to help with:

• Charging and commissioning: Split systems, ducted units, VRF/VRV, and commercial refrigeration.
• Recovery and fault finding: Checking suction/head pressures alongside temperature readings.
• Verifying superheat and subcooling: Essential for new installs and warranty call-outs.
• Automotive A/C: Charging and diagnostics using compatible manifolds and couplers.
• Service checks: Confirming system health before you leave the site.

Types of Gauges in This Range

Within this collection you’ll find:

Digital Refrigeration Manifolds

Multi-probe, app-connected gauges that calculate superheat/subcooling, log data, and generate reports.

Analogue Manifold Gauge Sets

Rugged 2-valve and 4-valve sets for everyday service work and as reliable backups in the van.

Replacement & Individual Gauges

High-side and low-side replacement AC gauges for common refrigerants such as R32, R410A, R134a, and R404A.

Accessories

Gauge protectors, boots, lenses, and micron/vacuum gauge couplers to keep your gear earning its keep.

How to Choose the Right Manifold Gauge Set

1. System Type & Refrigerant: For R32/R410A work, ensure manifolds and hoses are rated for high pressures. For freezers, check the low-temp scale.
2. 2-Valve vs 4-Valve:
   • 2-Valve: Ideal for split systems and automotive work.
   • 4-Valve: Best for pulling deep vacuums and charging without re-rigging hoses.
3. Digital vs Analogue:
   • Digital: Fast, accurate, auto-calculations, and reporting (great for commissioning).
   • Analogue: Tough, simple, and battery-free (great for reliable daily use).
4. Connection Sizes: Check your preferred hose size (¼", 5/16", 3/8") to match your typical systems.
5. Durability: Look for solid metal bodies and replaceable lenses.

Need advice? Contact our team for a quick recommendation.

Building a Complete Charging & Evacuation Setup

For a reliable process, combine your gauges with:

• A dedicated Vacuum Pump (correctly sized in CFM).
• A Micron Gauge to prove system dryness.
• A Refrigerant Scale for precise charging.

Safety, Licensing & Compliance in Australia

Refrigerant is not a DIY product. In Australia, you must hold a valid Refrigerant Handling Licence to carry out work involving regulated refrigerants.

Always follow Australian Standards, manufacturer instructions, and rules regarding flammable refrigerants (like R32) and GWP levels.

FAQs – Manifold & Refrigerant Gauges

1. What’s the difference between a manifold set and standalone gauges?

A manifold set includes the body, valves, and hoses for full system work. Standalone gauges are replacement heads that mount onto an existing manifold if one gets damaged.

2. Do I need a 2-valve or 4-valve manifold for R32/R410A?

A 2-valve is fine for everyday splits. A 4-valve is better for larger systems and recovery work, as it has separate ports for vacuum and charging, reducing hose swapping.

3. Are digital AC gauges worth it?

Yes, especially for commissioning. They automatically calculate superheat and subcooling, preventing calculation errors and allowing you to export professional reports to clients.

4. Can these gauges be used with flammable refrigerants?

Many are rated for R32/A2L, but you must check the specific product rating. Always follow safety guidance for flammable gases.

5. How often should I calibrate my gauges?

Digital manifolds should be calibrated per manufacturer specs. Analogue gauges should be checked regularly for zero error and pointer alignment.