TEC TrueFlow Air Handler Flow meter

TEC TrueFlow Air Handler Flow meter -
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TEC TrueFlow Air Handler Flow meter

Item Id: FlowTrue
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The TrueFlow® Air Handler* Flow Meter is designed to provide a simple and accurate measurement of airflow through residential air handlers. The TrueFlow Meter temporarily replaces the filter in the air handler distribution system during the airflow measurement process. If the filter location is directly adjacent to the air handler, the TrueFlow Meter will measure the total air handler flow. If the filter is located remotely at a central return, the TrueFlow Meter will measure airflow through the central return.

TrueFlow® Air Handler Flow Meter

  • Easy and fast to use in the field. The TrueFlow Meter provides direct CFM readings in 2 to 3 minutes without extensive calculations or setup.
  • Designed to measure flow through air handlers rated from 1 to 5 tons.
  • Can be used in a wide range of return plenums and air handler fan configurations.
  • Adjustable sizing to fit standard and custom filter slots.
  • Proven to be more accurate than the single-point temperature rise method and easier than the fan curve method.
  • Use with any manometer which has a resolution of 1 Pascal or 0.004" w.c.

* US Patent by The Energy Conservatory. TrueFlow is a registered trademark of The Energy Conservatory.


  • Fits most standard size filter slots including:
    Plate #1:14 x 2014 x 2516 x 2016 x 2416 x 2518 x 20
    Plate #2:20 x 2020 x 2220 x 2420 x 2520 x 3024 x 24
  • Flow accuracy is +/- 7% for most applications when used with a 1% accurate pressure gauge.

Specifications subject to change without notice.


  • TrueFlow® Kit includes two calibrated metering plates, 8 spacers, static pressure probe, tubing, carrying case, flow conversion table and operation manual.

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