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Save Money

Trade-in  your existing ventilation or IAQ instrumentation (WORKING OR NOT, NO MATTER WHAT THE BRAND) and get a CREDIT towards the purchase of a new instrument.


PH731 Prohood Capture Hood


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Proven Leader in Air Flow Measurement Instruments

At TSI, precision measurement devices are our specialty, and our line of air flow measurement instruments is unbeatable in terms of accuracy. Airflow™ Instruments are accurate, high quality, professional-grade instruments used by a wide range of customers, including building service contractors, commissioning specialists, facility engineers and research professionals.

An Industry Reputation and Experience You Can Depend On

For more than half a century, we have earned a reputation for quality airflow measurement instruments.

  • It began in 1955, when a single airflow measurement and fan design expert founded Airflow Developments Limited. The company was hailed as innovative and easy to use.
  • Fifty years later, in 2005, TSI acquired the Instrument Division of Airflow Developments. The result expanded the production of highly effective and accurate precision airflow measurement tools.
  • Since then, we have invested in research and development so that we can maintain our place at the head this field. We continue to innovate the best ways to measure air flow and ventilation parameters.
Precision Instruments for Accurate Measurements
  • Anemometers – from multi-function instruments to thermal anemometers and rotating vanes, Airflow Instruments provide the level of detail you need for accurate ventilation testing
  • Volume and Pressure Products – our accurate and reliable line includes capture hoods, manometers, micromanometers and hydronic manometers
  • Duct Leakage Testers  – a complete line of duct leakage testers designed to simplify duct pressure testing
  • Indoor Air Monitoring Instruments – a complete line of products designed to help ensure quality indoor air

Need Help Finding a Product?

  1. 1 Where are you trying to make a measurement?
  2. 2 What is your application?
  3. 3 What are you trying to measure?
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