Extech AN100 CFM/CMM Mini Thermo-Anemometer


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Extech AN100 CFM/CMM Mini Thermo-Anemometer

The AN100 is ideal for HVAC installation, repair, diagnostics, and optimization. The AN100 and AN200 feature a vane sensor with 3.9' cable and have the ability to set and store 8 area dimensions.



  • Simultaneous display of Ambient Temperature and Air Flow or Air Velocity
  • Up to 8 easy to set Area Dimensions are stored in the meter's internal memory
  • 20 point average function for Air Flow
  • Super large LCD Backlit Display
  • 3% velocity accuracy via low friction 2.83" D (72mm) ball bearing vane wheel on 3.9 ft. (120cm) cable
  • Data hold and MIN/MAX
  • Auto Power off

The Extech AN100 Thermo-Anemometer equips HVAC/R professionals with an instrument that measures air velocity, airflow and ambient temperature. With a large backlit display, the AN100 Anemometer can simultaneously display a temperature reading alongside either air flow or air velocity measurements.

The Extech AN100 uses a rotating vane probe and is ideal for measuring airflow from heating vents and other ventilation systems. An essential tool for HVAC installation, repair, diagnostics and optimisation.

Click here for product datasheet


General Specifications Range Resolution Basic Accuracy
Air Velocity 0.40 to 30.00 m/s
1.4 to 108.0 km/h
80 to 5906 ft/min
0.9 to 67.2 mph
0.8 to 58.3 knots
0.01 m/s
0.1 km/h
1 ft/min
0.1 mph
0.1 knots
±3% m/s
±3% km/h
±3% ft/min
±3% mph
±3% knots
Air Temperature 14 to 140°F (-10 to 60°C) 0.1°F / °C ±6.0°F (3°C)
Air Flow 0 to 9999 CMM (M³/min)
0 to 9999 CFM (ft³/min)
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  • Extech AN100 CFM/CMM Mini Thermo-Anemometer