Air Capture Hoods

Air capture hoods are the cornerstone of TAB airflow measurement. Their purpose is simple: help technicians collect stable volumetric readings directly at diffusers and grilles so systems can be balanced quickly and documented with confidence.

Key capabilities:

• Direct volumetric measurement at supply and return inlets
• Quick-change hood sizes to fit a wide range of device types
• Lightweight, ergonomic frames for ladder work and long days on site
• Advanced micromanometers with density correction and backpressure compensation
• Optional detachable gauges for Pitot traverses and pressure tests
• Wireless connectivity and app workflows for tagging, logging, and exporting data

Where they excel:

• VAV box and terminal unit verification across large floor plates
• Ventilation rate checks aligned with ASHRAE 62.1 methodologies
• School, healthcare, and lab ventilation surveys with mixed device types
• Return air balancing and troubleshooting starved branches
• Post-project documentation for commissioning and re-commissioning

Workflow benefits for TAB teams:

• Faster route times: match hood sizes to devices to reduce leakage and retakes
• Data integrity: log readings with location tags and timestamps for clear traceability
• Less rework: backpressure compensation helps stabilize readings on high-flow diffusers
• Flexibility: detachable micromanometers can support Pitot tube traverses and pressure tasks

Selection guidance:

• Choose a kit with multiple hood sizes if your projects span diffusers, grilles, and linear slots
• Look for integrated correction features to help handle varying temperatures and elevations
• Consider carrying cases or rolling carts for multi-building routes
• Evaluate app compatibility for digital reports and handoff to balancing software

Field tips:

• Center the hood, seat the frame evenly, and verify no bypass paths before recording
• Allow readings to stabilize; use averaging to handle pulsing or cycling flows
• Document upstream device status (damper position, VAV command) to speed adjustments
• Pair with an IAQ meter to correlate airflow with CO2 and comfort conditions
• For low-flow devices, use appropriate low-flow hoods or accessories to improve resolution

Reporting and handoff:

• Assign room and diffuser IDs as you measure to streamline final reports
• Export datasets to spreadsheets or balancing platforms to summarize totals vs. design
• Capture before-and-after readings when trimming VAVs to clearly show progress

Service and lifecycle:

• Routine calibration supports consistent measurement quality across projects
• Replacement gaskets and frames help maintain a tight seal and repeatable setup
• Training resources and application notes reinforce best practices for new technicians

From punch lists to full building balances, capture hoods help TAB professionals move faster while maintaining measurement discipline. Combined with micromanometers, anemometers, and IAQ meters, they create a comprehensive field toolkit for airflow verification, ventilation checks, and clear documentation — supporting better comfort outcomes and energy-aware operation across a variety of building type