Inficon Whisper 711-203-G11 Ultrasonic Leak Detector with Accessory Kit

The Inficon Whisper 711-203-G11 is a professional ultrasonic leak detector designed for HVAC, refrigeration, and gas system technicians who need to locate pressure and vacuum leaks quickly — even in noisy plant rooms and mechanical spaces where electronic sniffers struggle.

Unlike refrigerant-specific detectors, the Whisper detects any gas leak by sensing the ultrasonic signature of escaping gas. It works on nitrogen, CO₂, refrigerants, compressed air, and any pressurised system — making it an essential diagnostic tool for pre-charge leak testing and fault finding.

Key Features

• Ultrasonic detection: Locates leaks on any gas or vacuum system regardless of refrigerant type
• Built-in laser pointer: Pinpoints the exact leak location on large or complex systems
• Noise-filtering technology: Isolates ultrasonic leak signals from background mechanical noise
• Detects nitrogen leaks: Ideal for pre-charge pressure testing before refrigerant is introduced
• Sensitivity: Detects leaks from a 0.1 mm orifice at 5 psig from 30 cm
• Field-replaceable batteries: 2 × D alkaline — up to 165 hours battery life (laser off)
• Operating range: -20°C to 50°C
• Weight: 482 g with batteries
• Made in USA with 24-month replacement warranty

What's Included

• 1 × Inficon Whisper 711-203-G11 ultrasonic leak detector
• 1 × Hard plastic carry case
• 2 × D batteries
• 1 × Rubber extension probe
• 1 × Set of headphones
• 1 × Operating instructions
• 1 × 24-month warranty card
• Accessory kit: premium headphones, metal contact probe, and ultrasonic transmitter with 9V battery

Suitable For

• Pre-charge nitrogen leak testing on new installations
• Fault diagnosis on refrigeration and HVAC systems
• Locating leaks in tight spaces, overhead pipework, and noisy environments
• Any pressurised gas or vacuum system where refrigerant-specific detectors cannot be used

Related Products

Browse all Inficon leak detection tools and HVAC service tools at HVAC Supply Shop. For refrigerant-specific detection, see our full range of electronic refrigerant leak detectors.

Ships Australia-wide from our Australian warehouse. Contact us for trade pricing.