Inficon D-TEK 3 Refrigerant Leak Detector — Replaceable Sensor, Fast-Charge Battery, A2L Compatible

The Inficon D-TEK 3 is a professional-grade refrigerant leak detector that combines fast response, replaceable sensors, and an ergonomic design for reliable HVAC/R leak location.

The D-TEK 3 builds on Inficon’s established D-TEK legacy by adding practical upgrades that speed inspections and reduce downtime. It uses a specially formulated sensor that can be changed in the field, a quick-charge lithium-ion battery for extended service life, and multiple sensitivity levels to pinpoint leaks across refrigerant chemistries, including modern blends and A2L refrigerants. The unit’s optional CO2 sensor expands functionality for technicians who service commercial refrigeration and controlled-atmosphere systems.

How quickly will the D-TEK 3 find a refrigerant leak?

The D-TEK 3 offers rapid detection with audible and visual cues so you can move from large leaks to micro-leaks efficiently. Its Super sensitivity setting helps reveal the smallest emissions while lower settings avoid false alarms near background traces.

• Four sensitivity modes: Low, Medium, High, Super for staged searching
• Fast response sensor for near-instant feedback on concentration changes
• Visual LED bar plus audio tone for clear leak confirmation

What refrigerants and blends does this detector recognize?

The D-TEK 3 detects a wide range of refrigerant families, making it suitable for legacy systems and modern low-GWP A2L blends. It is manufactured to sense CFCs, HCFCs, HFCs, HFOs and many blended formulations so you don’t need multiple detectors for most jobs.

• Compatible with CFCs, HCFCs, HFCs, HFOs and refrigerant blends
• Works with A2L (mildly flammable) refrigerants used in current HVAC/R retrofits
• Optional CO2 sensor accessory for applications requiring dual-gas monitoring

How durable and serviceable is the tool on the jobsite?

Designed for everyday HVAC/R use, the detector features a rugged carrying case and an easy-to-replace sensor module so downtime is minimal. The quick-charge lithium-ion battery gives longer on-the-job runtime and fast turnaround between service calls.

• Ergonomic housing for comfortable, extended handheld use
• Quick-change sensor cartridge reduces field maintenance time
• Rugged protective case included for transport and storage

What power and calibration options does it offer?

The D-TEK 3 supports automatic and manual zero modes, and a rapid charging battery that gets you back to work faster. These control options let technicians adapt the detector to environmental backgrounds and maintain consistent sensitivity.

• Automatic or manual zeroing for baseline adjustment in variable environments
• Fast-charge lithium-ion battery for minimal downtime between jobs
• Built-in controls to toggle sensitivity and mute or adjust alarm behavior

Who is this for: The Inficon D-TEK 3 is aimed at HVAC and refrigeration professionals, commercial service technicians, and facilities maintenance teams who need a dependable, flexible leak detector that covers legacy refrigerants and modern low-GWP blends. Its replaceable sensor and rugged kit design make it ideal for service vans and busy field schedules where speed, accuracy, and maintainability matter most.