Directly from the manufacturer

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No leak goes undetected.

Instant response. No guesswork.
Reliable leak detection for every HVAC/R application.

Leak detector testo 515 Ex

Explore the testo 51x leak detector family.

Two models. One clear choice.
From focused detection to a sensitivity down to 3 g/a –
find the right leak detector for your job.

Leak detector testo 514

testo 514

Dedicated refrigerant leak detector with fast response for AC/R and heat pump systems.

Leak detector testo 513

testo 513

Dedicated gas leak detector for heating systems and maintenance tasks.

Stop chasing. Start detecting.

Rising energy costs and stricter safety requirements demand reliable leak detection in HVAC/R and heating systems. The new testo 51x family delivers fast response, precise results and full control on every job.

Instant response

Fast reaction time for instantaneous readings.

Maximum selectivity

Sensitivity down to 3 g/a.

Full control

Multiple display modes.

For pros in any application.

Reliable leak detection for AC/R

Precise and fast leak detection is essential for efficiency, safety and compliance.

Leak detection for Refrigeration

Discover the new smart HVAC/R World of Testo.

testo Smart Connect

testo Smart Connect

Ventilation & IAQ

Ventilation & IAQ

Refrigeration technology

Refrigeration technology

Heating technology

Heating technology

testo Smart App

testo Smart App

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