testo 316-3 - Refrigerant Leak Detector

The testo 316-3 is our best refrigerant leak detector yet, and delivers dependable, rugged performance at a great value. The heated diode sensor provides sensitivity down to 0.15 ounces/year including the new refrigerant blends like R-410A, R-407C,...

testo 317-1 - Gas spillage detector

The testo 317-1 quickly and efficiently detects escaping flue gases at the source. Flue gas escaping from a burner is caused by equipment failure and is an indicator of CO in the living space; this will trigger an...

testo 317-3 Ambient CO meter

The testo 317-3 ambient CO meter provides fast and easy CO testing with a small, lightweight form factor.  An exclusive self-test mode provides worry-free operation, as it will always verify that the CO sensor is...

testo 330i LX - Advanced flue gas analyzer kit

At the core of the innovative testo 330i LX flue gas analyzer is the measuring technology of the preceding testo 330 LL models, which have been proven in practice a thousand times over.  The outstanding technical features of this flue gas...

testo 400 - Universal Air Flow and IAQ Instrument

As an expert in the field of air conditioning and ventilation, you will find the testo 400 universal Air flow and IAQ measuring instrument ideal. The measuring instrument with a built-in measurement assistant provides optimum support for...

testo 400 Air Flow Kit - For TAB / Commissioning Professionals

testo 400 is the universal measuring instrument for all TAB / Commissioning and IAQ professionals, enabling them to measure, document and analyze all Airflow and IAQ parameters with just one instrument.   Smart support...

testo 400 Comfort Kit - for comfort professionals in high performance buildings

testo 400 is the universal measuring instrument for all TAB / Commissioning and IAQ professionals, enabling them to measure, document and analyze all IAQ parameters with just one instrument.   Smart support through stored...

testo 400 IAQ Kit - for Commissioning and IAQ investigation professionals

The testo 400 IAQ kit is the universal measuring instrument for all Commissioning and IAQ professionals, enabling them to measure, document, and analyze all IAQ parameters with just one instrument.   Smart support through...

testo 405 - Pocket-sized thermal anemometer

If, in your capacity as an HVAC engineer, you carry out fast check measurements in ventilation ducts or in rooms, then the testo 405 thermal anemometer is a must-have. The anemometer features a permanently mounted...

testo 405i - Hot-wire anemometer wireless Smart Probe

Users can read the measurements using the testo Smart app installed on their smart device.  The app lets users configure duct dimensions to calculate volume flow measurements.  Use the testo 405i along with the...

testo 410-1 - Vane anemometer

The testo 410-1 pocket anemometer provides accurate air velocity measurement in an affordable air flow instrument. Simple to use and feature packed, the testo 410-1 air flow instrument from our Pocket Pro line...

testo 410i - Vane anemometer wireless Smart Probe

Users can read the measurements using the testo Smart app installed on their smart device.  It is easy to configure volume flow measurements, and to reliably run timed multipoint averaging traverses.  It is...