Dwyer Instruments SAH-22
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$2.290
Advanced wireless air flow hood with Predictive Balancing technology and patent-pending Quad Flow Design for fast, accurate HVAC balancing by a single technician.
Dwyer SAH-22 SMART Air Hood – Predictive Balancing Air Flow Measurement Tool (2′ x 2′ Base).
The Dwyer SAH-22 SMART Air Hood is a revolutionary air flow measurement tool designed to redefine HVAC system balancing with its Predictive Balancing technology and Quad Flow Design. Constructed with durable, lightweight polypropylene housing, the SAH-22 is the most compact and aerodynamic air hood in the industry, enabling one-person operation and fast, accurate testing.
Engineered for use in commercial HVAC systems, cleanrooms, and building commissioning, this smart air hood uses Wi-Fi Direct communication to wirelessly transmit data up to 200 yards (183 meters) to a handheld instrument. With support from the PredictAir™ Application, balancing tasks are optimized and completed with precision—saving valuable time and labor.
Key Features
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Patent-pending Quad Flow Design ensures minimal backpressure and high accuracy
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Predictive Balancing software enables rapid, guided balancing by a single technician
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Wi-Fi Direct wireless range up to 200 yards (183 m)
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Lightweight, ergonomic build reduces technician fatigue
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Large volume flow range: 40 to 2000 CFM (68 to 3398 m³/h)
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Multilingual PredictAir™ handheld app for intuitive operation
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Measures airflow, temperature, humidity, and pressure in one unit
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Includes NIST Traceable Calibration Certificate
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Rechargeable lithium-ion battery or optional AA operation
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Supplied in rugged roller case with full accessory kit
Why Choose the Dwyer SAH-22?
The SAH-22 delivers unmatched performance in environmental testing and air flow measurement by combining ergonomic design, smart software, and rugged construction. It’s ideal for HVAC professionals, commissioning agents, and building engineers seeking to reduce labor costs and eliminate guesswork in balancing tasks.
Its Quad Flow sensing grids offer superior accuracy across all diffusers, while its Predictive Balancing algorithm reduces balancing time by up to 50%. The SAH-22 is a complete, portable solution for professionals who demand precision and efficiency.
Explore more in our Air Flow Measurement collection or read our related guide: Environmental Test Equipment — Tools for Climate, Humidity, and Vibration Analysis.
What’s Included
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(1) 2′ x 2′ SAH base unit
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(1) Handheld test instrument (UHH2) with PredictAir™ App preloaded
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(1) Extendable pole (2′ to 4′)
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(1) Pole safety clamp
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(1) Stationary pole adapter
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(1) Handheld quick-release pole adapter kit
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(1) SAH roller travel case with custom foam inserts
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(1) 3.6 V lithium-ion rechargeable battery
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(1) 4-port universal wall charger
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Charging cables (SAH & handheld unit)
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Wired connection adapter (handheld to SAH)
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Calibration return shipping box for sensors
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NIST Traceable Certificate
Technical Specifications
| Specification | Details |
|---|---|
| Service | Air |
| Flow Units | CFM, l/s, m³/h |
| Flow Ranges | Supply: 40 to 2000 CFM; Exhaust: 80 to 2000 CFM |
| Flow Accuracy | ±3% of reading ±7 CFM (calibrated); ±3% ±10 CFM (any diffuser) |
| Resolution | 1 CFM (0.5 l/s) |
| Temperature Measurement | Range: 40 to 140°F (4.4° to 60°C); Accuracy: ±0.3%; No calibration required |
| Humidity Range | 5 to 95% RH; Accuracy: ±5%; No calibration required |
| Pressure Range | 10 to 2000 mbar; Accuracy: ±2% of reading @ 25°C (300–1100 mbar) |
| Power Options | 3.6 V lithium-ion rechargeable battery or (4) AA alkaline batteries |
| Housing Material | Polypropylene |
| Weight | 5.75 lb (2.6 kg) |
| Wireless Communication | Wi-Fi Direct, 200-yard (183 m) range |
Applications
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HVAC system commissioning and testing
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Commercial air balancing (supply and exhaust)
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Cleanroom air flow verification
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Facility maintenance and inspection
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LEED certification compliance
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Building performance diagnostics
