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  • Usually ships in 4-6 business days



  • Quad flow design technology
  • Predictive balancing
  • 40 to 2000 CFM (19 to 944 l/s) (68 to 3398 m3/h) range
  • ±3% accuracy
  • 1 CFM (.5 l/s) (1.7 m3/h) resolution
  • Wi-Fi direct wireless communication up to 600 ft (183m)
  • 5 to 95% RH range
  • 10 to 2000 mbar (1000 to 200,000 Pa)
  • 2 x 2ft (0.61 x 0.61m) opening
For full functionality and versatility, the A-SAH-12P is required for operation of all SAH models

What's in the Box

  • Handheld test instrument
  • Android phone
  • SAH travel case
  • Connector cable
  • Charger and cable


The SAH Series Smart Air Hood balancing instrument is made with polymer construction that represents the smallest and most aerodynamic design in the industry. The patent pending Quad Flow Design Technology is based on controlling air flow and minimizing back pressure which yields superior measurement accuracy. Featuring Wi-Fi direct communication, with a range of up to 200 yards (183 m) between the hood and a handheld test instrument, the user interface, mobility, data storage and transmission has never been better. The Series SAH includes Predictive Balancing, an industry first for air flow balancing. Predictive Balancing is a method of projecting the optimal flow set point for each diffuser while balancing the HVAC system. The handheld PredictAir™ application software includes algorithms enabling Predictive Balancing to achieve best in class accuracy. Balancing can be done with just one technician.


This product can be used in the following applications:

Here's how some of our customers use this product...

Airflow Measurement with Limited Space

The Background: Our customer is an HVAC contractor working on an air balancing project at a tech company.

The Problem: The customer is having difficulty getting airflow measurements in a server room due to the fact the server cabinets do not leave much room to access the air registers with a standard size flow hood.

The Solution: We recommended the Dwyer SAH Series Smart Air Hood due to its ability to fit into small spaces. Made with polymer construction and using Quad Flow Design Technology, the SAH has the smallest and most aerodynamic design in the industry and maintains superior measurement accuracy.