Fieldpiece DRX3 Refrigerant & Combustible Gas Leak Detector — Heated Diode Sensor for A3/A2L/A1, Lightweight

The Fieldpiece DRX3 is a compact, professional-grade leak detector that senses A3, A2L and A1 refrigerants plus common combustible gases using a heated diode sensor.

Designed for HVAC technicians who need a reliable, easy-to-carry tool, the DRX3 combines sensitivity, durability and simple controls to find leaks fast. It supports a broad range of gases — from hydrocarbons and HFOs to tracer blends — and delivers both visual and audible cues that scale with leak strength. The unit pairs long battery life with field-replaceable parts, and it works with the Job Link System app so you can log and review inspections on the job.

How accurately will the DRX3 find small refrigerant leaks?

The DRX3 uses a heated diode sensor that detects low-level refrigerant concentrations and combustible gases with repeatable readings. Auto and manual zero modes reduce false positives from background contamination, while three sensitivity settings let you match detection range to the task.

• Heated diode sensor optimized for A3, A2L and A1 refrigerants
• High, medium and low sensitivity to tune detection
• Auto/manual zeroing to compensate for ambient gas
• Visual and audio scaling to indicate leak intensity

What refrigerants and gases can this detector handle?

The DRX3 covers a wide spectrum of refrigerants and common heating gases, including pure and blended hydrocarbons, HFCs, HCFCs, CFCs, HFOs and H2/N2 tracer mixes. It is built for field versatility so a single tool will serve multiple systems and service calls.

• Compatible with HC, HFC, HCFC, CFC and HFO refrigerants
• Detects H2/N2 tracer gas and common combustible heating gases
• Suitable for blends as well as pure refrigerant types
• Field-replaceable sensor to maintain long-term performance

How does the DRX3 perform in daily service and harsh conditions?

The DRX3 is engineered for jobsite durability while staying lightweight to cut toolbag bulk. Its controls are straightforward, the batteries are long-lasting and user-replaceable, and the detector ships in a blow-molded case for protected transport. Rugged construction and clear feedback mechanisms keep it dependable on repeat service calls.

• Rugged housing with blow-molded carrying case included
• Long-life, field-replaceable batteries for uninterrupted use
• Multiple visual LEDs plus audible tones that vary with leak size
• Compact and lightweight for easy handling during inspections

Can I log inspections or connect the DRX3 to a mobile workflow?

Yes — the DRX3 integrates with Fieldpiece's Job Link System app so you can record leaks, attach notes and keep a digital history for customers. Wireless connectivity streamlines reporting and helps technicians maintain consistent service records across jobs.

• Compatible with Job Link System app for logging and review
• Enables saving inspection data and images where supported
• Helps standardize leak documentation across service teams

Who is this for: The Fieldpiece DRX3 is intended for HVACR technicians, service contractors and facilities personnel who need a single, versatile leak detector that covers modern refrigerant classes and combustible gases. It’s a practical choice for pros who value portability, proven sensor technology and the ability to archive inspection results.