About

As a world leader in the design, development and manufacture of portable test and measurement instrumentation, professionals in numerous industries across the globe trust Testo instruments to provide accurate data, day after day.  From HVAC/R technicians to process engineers; from compliance testers to quality assurance managers; and everything in between, Testo covers a wide variety of applications for temperature, moisture, combustion, pressure, refrigeration, airflow, and IAQ.

Since the founding of Testo, Inc. of the US and Canada in 1981, the company has grown in size and reputation.  With a far-reaching base of over 2,000 distribution channels and industry experts providing key technical assistance, our customers always have the support they require.  Testo, Inc. has become the standard by which all others are judged.  Whether a sole contractor needs a residential combustion analyzer or a multi-national pharmaceutical company requires a stationary monitoring solution for regulated manufacturing, Testo has you covered.

Since our beginning in 1957 in the Black Forest village of Lenzkirch, Germany, when Testo introduced one of the first digital thermometers to the industry, Testo has been a growing leader and pioneer in bringing measuring innovations to market.  Today, with 30 country subsidiaries and trading partners in more than 70 countries, Testo provides cutting-edge measuring solutions of more than 50 product series across the globe.

Product Line
Testo’s brand has a reputation for exceptionally designed and engineered products that are lightweight, rugged and dependable. 

Handheld analytical instrumentation:

  • Combustion efficiency analyzers
  • Air emission monitors
  • Refrigeration systems analyzers
  • Air quality analyzers
  • Gas analyzers
  • Air flow analyzers
  • Temperature indicators, dataloggers
  • Digital thermometers
  • Humidity indicators, dataloggers
  • Dew point indicators
  • Stack gas analyzers
  • Water quality analyzers
  • Pressure meters
  • Tachometers
  • Light meters
  • Multifunction instruments
  • Visual inspection tools
  • Thermal Imaging

Sensing Technologies:

  • Zr02
  • Electrochemical – 02
  • Thin film technology (capacitive)
  • Toxic gas sensors
  • NO
  • NO2
  • SO2
  • CO
  • CO2
  • Infrared




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