AMCA/ASHRAE Air Flow Tunnels

Airflow Sciences' Air Flow Measurement Tunnel is a highly accurate, self-contained measurement system meeting AMCA/ASHRAE specifications and custom-built to meet your exact flow measurement needs.


Compact 3,000 CFM tunnel with venturi flow measurement

What is a flow tunnel?

Airflow Sciences designs and manufactures air flow tunnels for laboratory testing of fans and other air moving devices. These tunnels are designed to comply with a number of industry standards including AMCA 210, AMCA 270, AMCA 610, ASHRAE 51, HVI 915, etc… Based off of a few standard designs, individual tunnels are customizable to meet the specific needs of our clients. From small tunnels (0.1- 50 CFM) used for leakage testing or small products and filters, to medium tunnels (50 – 10,000 CFM) used for fans and HVAC equipment, to large tunnels (10,000 – 100,000+ CFM) for testing large fans and complete air handling units, Airflow Sciences can build a tunnel that’s tailor-made for your application.

Common Applications for Flow Tunnels

  • Fan testing and P-Q generation
  • Pressure drop vs. flow rate data (for filters, valves, orifices, dampers, register vents, etc…)
  • Air handling units
  • Automobile climate control systems
  • Many more!

Software / Data Logger

Our TunnelFlow Pro software performs data logging for all of the following parameters:

  • Supplied air flow rate
  • Static pressures (at appropriate test planes)
  • Temperatures (at appropriate test planes)
  • Ambient conditions (barometric pressure, temperature, humidity)
  • Device Under Test (DUT) operating conditions (fan voltage / amperage)
  • OPTION – Additional channels and parameters per the client’s request

The software allows user input of test conditions and displays real-time on-screen results during the testing. All data is logged and available for export (.csv) for instant data analysis.

Performance and Operation

As air is moved through the chamber the pressure drop is measured across the nozzle plane. Expected accuracy is +/-2% of full scale for each nozzle, and typical accuracy of calibration results are better than 1% of the reading.

For more information, please review Air Flow Measurement Tunnel brochure or contact our team of engineers today.

Air Flow Tunnel
custom air flow tunnel

Automotive testing with typical AFT-100 (left) and typical AFT-3000 (right)


Learn more:

Visit our equipment-specific website, Airflow Sciences Equipment, for more info, videos, and blogs on Airflow Sciences' flow tunnels.

Watch ASC's AMCA-ASHRAE Air Flow Tunnel on YouTube.