Wisscool Digital Manifold Gauge HVAC — R1234yf/R134a/R410A/R454B Support, Backlit LCD & Vacuum Testing

The WISSCOOL Digital Manifold Gauge is a handheld HVAC diagnostic tool that combines refrigerant charging, vacuum testing and leak detection in one compact, high-precision instrument.

This digital manifold gauge is built for technicians who need quick, reliable readings across a broad range of refrigerants. It stores a database of 24 NIST refrigerants, supports common gases such as R1234yf, R134a, R410A and R454B, and displays pressure and temperature on a large backlit LCD. Lightweight and designed for everyday workshop use, the unit simplifies diagnostics by reducing the need to swap tools during service calls.

How accurate are the pressure and vacuum readings?

The WISSCOOL gauge uses a precision acquisition module to deliver consistent measurements suitable for troubleshooting and system evaluation. Pressure testing spans from -101 kPa up to 6000 kPa, and vacuum measurement covers down to full vacuum.

• Pressure range: -101 kPa to 6000 kPa
• Vacuum range: -101 kPa to 0 kPa
• Stated accuracy: ±0.5% FS + 5 digits for pressure readings
• Selectable units: kPa, MPa, bar, inHg, PSI, kgf/cm²; temperature °C/°F

Which refrigerants and tasks does this gauge handle?

The gauge includes a built-in refrigerant database of 24 NIST entries so you can work with most modern and legacy refrigerants without manual conversions. Typical applications include charging, leak checks, evacuation monitoring and rapid performance checks on residential and automotive systems.

• Preloaded refrigerants: R1234yf, R134a, R12, R22, R32, R410A, R454B and more
• Functions: refrigerant filling pressure inspection, vacuum pressure testing, and leak detection
• One-device workflow avoids swapping separate gauges for common HVAC tasks
• 1/4" inlets and standard US system threading for easy hose connections

What practical features improve daily use on the job?

Designed for field reliability, the WISSCOOL manifold gauge sports a large, backlit LCD for legible readings in dim spaces and a compact 0.9 lb body that reduces fatigue over long service days. It runs on two AA batteries and includes an auto-off feature to conserve power between jobs.

• Large backlit display for low-light environments
• Lightweight 0.9 lb housing for portability
• Auto-off battery saving; two AA batteries included
• Comes with manual for quick setup and troubleshooting

How durable and easy to connect is the unit?

Construction and fittings are intended for regular shop and field environments: a clear visual layout, standard valve controls and stable threading make hose changes fast and secure. The mirror-style panel design and robust connectors reduce installation errors and improve handling under repetitive use.

• US system thread and 1/4" inlet ports for compatibility with standard hoses
• Valve-switch layout for straightforward operation
• Stable characteristics and reliable performance across repeated cycles
• Compact profile for tool bag or belt carry

Who this product is for: HVAC and refrigeration technicians, mobile service professionals, and advanced DIYers who work with multiple refrigerants and need a single, portable gauge for charging, vacuum checks and leak detection. It fits well into a service toolkit when you require accurate readings, quick refrigerant selection from a built-in database, and a durable digital gauge that stays operational in everyday workshop and field conditions.