Extech RD350 Refrigerant Leak Detector

HVAC technicians and refrigeration service professionals rely on the Extech RD350 to pinpoint refrigerant leaks in air conditioning and cooling systems. This handheld detector uses a heated diode sensor to identify CFCs, HCFCs, HFCs, and HFOs, including R-134a, R-410a, and R-1234yf, with a sensitivity of 0.1 oz/year for R-134a. The flexible 16-inch probe reaches into tight spaces, while the multi-color LED bar graph and variable frequency alarm provide clear visual and audible leak indication.

Key specifications

• Detection principle: Heated diode sensor
• Refrigerants: CFCs, HCFCs, HFCs, HFOs (R-12, R-22, R-134a, R-404a, R-410a, R-407c, R-32, R-1234yf)
• Sensitivity: 0.1 oz/year (3 g/year) for R-134a
• Response time: Instantaneous
• Warm-up time: < 30 seconds
• Sensor life: > 300 hours
• Operating temperature: 0 to 50°C (32 to 122°F)
• Operating humidity: < 80% RH (non-condensing)
• Power source: 4 x AA batteries
• Battery life: Approximately 4 hours continuous use
• Probe length: 16 inches (40 cm) flexible probe
• Certifications: SAE J2791, SAE J2913
• Calibration: Automatic background calibration
• Low battery indicator: Yes
• Controls: Power On/Off, Sensitivity Adjustment

Why choose it

The RD350 offers instant response and automatic background calibration, eliminating manual adjustments. Its flexible probe and high sensitivity make it suitable for both residential and commercial systems, and the dual visual/audible alarms ensure leaks are not missed even in noisy environments.

Ideal use cases

• Locating refrigerant leaks in residential and commercial HVAC systems
• Servicing automotive air conditioning systems
• Verifying repairs and system tightness
• Routine maintenance in refrigeration plants

Good to know

The detector operates on four AA batteries, providing approximately four hours of continuous use. It is certified to SAE J2791 and SAE J2913 standards, ensuring reliable performance in professional applications.