Precision refrigeration leak detectors you can rely on.
Complimentary spare sensor head now included with every Testo 316-3 and 316-4 leak detector purchase — offer valid for a limited time!
Find leaks fast.
Testo detectors deliver ultra-sensitive leak detection, ready for any refrigerant —
from R-410A to R-22.
Purchase any of the 3 eligible Testo Refrigerant Leak Detectors and receive a FREE replacement sensor head, so your ready for whatever the job throws at you.
Trusted by HVAC professionals worldwide, Testo leak detectors help you to get the job done quickly & efficiently.
Detect even the smallest refrigerant leaks quickly and reliably
Work across all common refrigerants including R-410A, R-22, R-134a, and more
Minimize downtime with fast warm-up and auto-reset features
Ensure compliance with industry standard
Your Versatile detector for multiple HVAC applications for the budget conscious.
Automatic zeroing in contaminated areas
Highly sensitive sensor < 4 g/a - can detect even the smallest leaks
Audible & visual alarm
Compatible with all standard refrigerants
Patented heated diode sensor provides
excellent sensitivity
testo 316-3 refrigerant leak detector, sensor head, filter, carry case, protocol certificate, batteries, and free replacement sensor head included at check-out.
Shop 316-3 leak detector
testo 316-4 refrigeration leak detector Kit 1 designed for HVAC&R professionals
Highly accurate sensor of ˂3g/a enables
detection of the smallest leaksVisual and acoustic alarm for optimum leakage detection
Earplug connection for safe leakage
detection in loud environmentsMaximum indicator shows maximum leakages
Includes: testo 316-4 leak detector , standard sensor head, filter set, power supply, carry case & free replacement sensor head at check-out.
Shop 316-4 leak detector
testo 316-4 refrigeration leak detector Set 2 for fast reliable detection of Ammonia & refrigerants.
Highly accurate sensor of ˂3g/a enables
detection of the smallest leaksPractical sensor technology for long life & ease of use.
Earplug connection for safe leakage detection in loud environments including optical and audible alarm.
Includes 316-4 (2) leak detector, Ammonia sensor head, carry case, mains unit and earphones and free ammonia sensor head included at check-out.
Shop 316-4, Ammonia leak detectors
Why Choose Testo Leak Detectors?
German-engineered precision – trusted accuracy and reliability for every HVAC/R job.
Ultra-sensitive detection – find even the smallest leaks quickly (< 3 g/a sensitivity).
Fast response time – detects leaks in seconds to save time on every service call.
Automatic zeroing – ensures consistent results even in contaminated environments.
Work anywhere – visual, audible, and optional headphone alerts for noisy sites.
Built for professionals – rugged, ergonomic design with flexible gooseneck probe.
Wide refrigerant coverage – detects CFCs, HCFCs, HFCs, H₂, and even NH₃ (ammonia with 316-4 kit 2 model).
Long operating life – efficient power use and replaceable sensor heads.
2 year Warranty and Local service support: Testo Australia is located in Victoria for all service repairs & calibrations, we also have specialist and customer service people here to assist with any questions.
