Wisscool Digital HVAC Gauge – 3-in-1 Manifold for R134a/R454B/R1234yf/R32, Backlit LCD & Leak/Vacuum Test

WISSCOOL's Digital Gauge is a lightweight 3-in-1 HVAC manifold that measures pressure, performs vacuum tests, and detects leaks across 24 refrigerants.

This handheld instrument combines a digital pressure display, vacuum capability and leak-check functions into one compact tool built for service techs and contractors. With a wide refrigerant database, multiple pressure units and a backlit LCD, it’s designed to speed diagnostic tasks and charging jobs while reducing the need to swap separate gauges during routine AC and refrigeration work.

How does this gauge simplify refrigerant charging and system checks?

The WISSCOOL gauge centralizes filling, pressure inspection and leak detection so you can complete common service steps without changing instruments. The built-in refrigerant list quickly converts pressure to temperature values for faster decision-making.

• Supports 24 refrigerants including R134a, R454B, R1234yf, R32 and R410A
• Pressure range from -101 kPa up to 6000 kPa for broad system coverage
• Multiple unit displays: kPa, MPa, bar, inHg, PSI and kgf/cm²
• Backlit large LCD for clear readings in dim workspaces

What accuracy and performance can I expect during diagnostics?

The device uses a 32-bit processor and a precision acquisition module to deliver stable measurements suitable for professional troubleshooting. Accuracy specs support repeatable results for pressure and vacuum verification without relying on analog guesswork.

• Pressure accuracy: ±0.5% (FS) plus 5 count for reliable readings
• Vacuum measurement covers deep pulls from -101 kPa to 0 kPa
• Fast digital sampling for quicker system response checks
• Visual mirror design and US-standard 1/4” connections for compatibility

How easy is it to use and maintain on the job?

The gauge is designed for daily trade use: it’s light, runs on two AA batteries, and includes an auto-off to conserve power. Installation and battery replacement are straightforward, and the display options let techs work in varied environments without extra tools.

• Supplied with one digital gauge, two AA batteries and a user manual
• Auto-off feature extends battery life during intermittent use
• Simple back cover rotation to insert batteries — no tools required
• Compact weight under 1.1 lb for reduced fatigue on long jobs

What fittings and connections does the manifold offer?

Fitted with standard service threads and 1/4” inlets, the WISSCOOL gauge mates cleanly to most HVAC hoses and systems. Valve control and robust construction aim to minimize leaks at connection points and maintain stable readings while hooked to active systems.

• US system thread and 1/4” inlet ports for broad compatibility
• Integrated valve switch for controlled charging and isolation
• Stable mechanical design reduces vibration-related errors

Who is this for: HVAC technicians, refrigeration specialists and mobile service contractors who need a single, dependable handheld tool for charging, vacuum pulls and leak checks. It's also a practical choice for facilities maintenance teams that support multiple refrigerant types and need fast, repeatable diagnostics without carrying multiple analog gauges.