Manifold Gauge, AC Gauges & Air Conditioning Gauges
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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 is the tool you trust most.
This collection features analogue and digital manifold gauge sets, replacement AC gauges, and vacuum gauge accessories. We stock the brands that Australian tradies actually use on site.
Built for Australian Conditions:
From humid coastal installs in Brisbane to frosty winter starts in Melbourne, our gear is ready. Pair the right manifold with a solid vacuum pump and refrigerant scale to cut call-backs and hit your targets the first time.
Common Applications
Our manifold and refrigeration gauges are designed for:
- Charging & Commissioning: Split systems, ducted units, VRF/VRV, and commercial refrigeration.
- Diagnostics: Checking suction and head pressures alongside temperature readings.
- Verification: Measuring superheat and subcooling (essential for warranty call-outs).
- Automotive: A/C charging and diagnostics using compatible couplers.
Types of Gauges Available
Digital Refrigeration Manifolds
Multi-probe, app-connected gauges. These automatically calculate superheat/subcooling, log data, and generate professional reports for your clients.
Analogue Manifold Gauge Sets
Rugged 2-valve and 4-valve sets. The reliable, battery-free choice for everyday service work and van backups.
Replacement & Individual Gauges
High-side (Red) and low-side (Blue) replacement heads. Compatible with common refrigerants like R32, R410A, R134a, and R404A.
Accessories
Protect your gear with gauge boots, replacement lenses, and micron gauge couplers.
Buyer’s Guide: How to Choose
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Check the Refrigerant Rating:
For R32 or R410A work, ensure the manifold body and hoses are rated for high pressures. For freezers, check the low-temp scale. -
2-Valve vs. 4-Valve:
- 2-Valve: Lighter and easier for split systems.
- 4-Valve: Includes a dedicated vacuum port, allowing you to pull a vacuum and charge without changing hoses.
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Digital vs. Analogue:
- Digital: Faster commissioning with auto-calculations.
- Analogue: Tougher and requires no batteries.
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Connection Sizes:
Most splits use 1/4" or 5/16" ports. Check your hose fittings before buying.
Need advice? Contact our team for a quick recommendation.
Complete Your Charging Setup
Don't stop at the gauges. For a reliable evacuation and charging process, you will need:
- A dedicated Vacuum Pump (sized correctly in CFM).
- A Micron Gauge to prove system dryness.
- A Refrigerant Scale for precise charging by weight.
Common Questions (FAQs)
1. Are these manifold gauges rated for R32 and R410A?
Yes. All manifolds in this collection are built to withstand the higher operating pressures of R410A and R32. If working with R32 (A2L), please verify the gauge face includes the correct P-T chart for that gas.
2. Do these sets come with 5/16” adapters for Mini-Splits?
Standard hoses usually come with 1/4" SAE fittings. Modern R410A/R32 splits often use 5/16" ports. Unless "R410A Hoses" are specified, we recommend adding a 5/16" adapter to your order.
3. Can I replace just the gauge face if I drop the manifold?
Yes. We stock standalone high-side and low-side replacement gauges for Testo, Imperial, and Mastercool. You don't need to buy a whole new set if the glass cracks.
Trust & Compliance
- Author: HVAC Shop Content Team (Australia)
- Business: HVAC Shop (ABN: 98 351 143 900)
- Support: 0412 333 115 | support@hvacshop.com.au
- Shipping: Australia-wide (Sydney, Melbourne, Brisbane, Perth, etc.)
Safety Note: In Australia, you must hold a valid Refrigerant Handling Licence to work with regulated refrigerants. Always follow Australian Standards.
































