Navtek NML1 Electronic Refrigerant Leak Detector.

• Semiconductor sensor for precise, long-life detection
• Compatible with CFC, HCFC, and HFC refrigerants
• Response time: ≤3 seconds
• Auto-calibration for hassle-free operation
• Sniffing fan for accurate refrigerant sampling
• 7″ flexible probe for accessing tight spaces
• Rechargeable lithium battery — ≥8 hours battery life
• Sensor life: ≥1 year / 1500 hours under normal usage
• System pressure requirement: ≥50 psi
• Lightweight ergonomic design — 0.77 lbs
• 1 year warranty

NML1 – Navtek Electronic Refrigerant Leak Detector – Find Leaks Fast, With Precision

Precise Detection with Semiconductor Sensor Technology

The Navtek NML1 Electronic Leak Detector uses an advanced semiconductor sensor to detect CFC, HCFC, and HFC refrigerant leaks with high precision and reliability. Semiconductor sensor technology offers a longer service life than traditional heated diode sensors, making the NML1 a cost-effective tool built to last.

Fast Response — Results in 3 Seconds or Less

When you’re on the job, speed matters. The NML1 delivers a response time of 3 seconds or less, depending on the size and location of the leak — giving you rapid feedback so you can pinpoint leaks quickly and get the system back into service.

Auto-Calibration for Hassle-Free Use

The NML1 features automatic calibration, eliminating the need for manual adjustment before use. Simply switch it on and it’s ready to work — saving time and reducing the chance of operator error.

Sniffing Fan for Accurate Sampling

The built-in sniffing fan actively draws air into the sensor, improving detection accuracy and responsiveness — particularly useful in low-airflow environments or when tracing small leaks in hard-to-reach locations.

15.7″ Flexible Probe for Hard-to-Reach Areas

The 15.7″ flexible probe allows you to reach into tight spaces, behind panels, and around components where leaks are most commonly found. The flexible design lets you position the tip precisely without awkward angles or disassembly.

Long Battery Life — 8+ Hours

Powered by a high-performance rechargeable lithium battery, the NML1 delivers 8 or more hours of continuous operation on a single charge — more than enough for a full day’s work in the field without needing to recharge.

Durable Sensor Life — 1500 Hours

The semiconductor sensor is rated for 1 year or 1500 hours of normal use — significantly longer than many competing leak detectors. This means fewer sensor replacements, lower ongoing costs, and a tool you can rely on day after day.

Lightweight Ergonomic Design

At just 0.77 lbs, the NML1 is light enough to carry and use one-handed throughout the day without fatigue. The ergonomic body design fits comfortably in the hand, making leak detection a quick and easy part of your service routine.

The Essential Leak Detection Tool for HVAC Professionals

Don’t let refrigerant leaks go undetected. The Navtek NML1 gives you the speed, precision, and convenience to find leaks confidently — protecting your systems, your clients, and the environment.