Updated August 21, 2026 | Michael Danielsson, CEO, Vindus Fans
Industrial ventilation system design starts by separating three jobs: exhaust removes contaminated or heated air, supply replaces and conditions air, and HVLS fans recirculate air through occupied zones. A sound plan maps those paths together instead of treating a ceiling fan as a substitute for source capture or required outdoor air.
Write down whether the project is addressing heat, humidity, fumes, dust, odors, pressure balance, thermal stratification, or occupant comfort. These objectives lead to different equipment and acceptance tests. OSHA ventilation guidance is a useful starting point for workplace hazards, but local codes and qualified engineering review determine the final design.
Draw the intended path from each supply opening through the work area to the exhaust point. Mark doors, loading bays, partitions, racks, cranes, process equipment, capture hoods, sprinklers, and maintenance clearances. Avoid placing supply and exhaust openings so close that clean air short-circuits before reaching the source or occupied zone.
Every exhausted volume needs replacement air. Insufficient make-up air can create negative pressure, difficult doors, uncontrolled drafts, or combustion backdrafting. Excess supply can push air into adjacent rooms. Record normal, reduced-occupancy, shutdown, alarm, and fire/smoke operating modes before selecting fan controls.
HVLS fans can reduce vertical temperature layers and spread supplied air across a broad floor zone. They primarily recirculate indoor air, so they should not be credited as contaminant extraction or proof of an outdoor-air requirement. Check the combined system while exhaust, supply, doors, and process equipment are operating.
The Vindus P780 Series is published for U.S. projects with 20 ft and 24 ft diameters and approximate blade heights of 20–33 ft. It uses a direct-drive PMSM motor, lists input below 1,000 W at maximum speed, and provides a floor-level integrated HMI with a single ceiling-to-floor cable. Confirm structure, electrical supply, obstructions, controls, and service access before a quotation.
| Planning item | What to verify |
|---|---|
| Ceiling and structure | Clear height, mounting loads, steel, sprinklers, lights, cranes, and ducts |
| Airflow interaction | Supply outlets, exhaust inlets, capture hoods, doors, and occupied zones |
| Controls | Speed schedule, direction, alarms, interlocks, shutdown, and BAS connection |
| Environment | Dust, moisture, corrosion, washdown, temperature, and product sensitivity |
No. HVLS fans mix indoor air; exhaust fans remove air and may capture contaminants. They can work in the same design but perform different functions.
Provide floor plans, clear heights, process sources, doors, equipment, supply and exhaust locations, operating schedules, electrical details, environmental exposure, and the required comfort or exposure criteria.
No. The published 20–33 ft blade-height range is only one check. Structure, obstructions, process hazards, environment, controls, and the complete ventilation path must also fit.
Use the Vindus contact page to request a P780 review with drawings and operating requirements. For standards context, compare measured performance using AMCA 230-15 and ANSI/ASHRAE 216P rather than headline figures without test conditions.
Michael Danielsson is CEO of Vindus Fans, with experience across fan product development, production, operations, and customer service for large-space airflow projects.
A step-by-step framework for placing supply, exhaust, and HVLS circulation in one coordinated industrial ventilation system design.
Hi, I’m Michael Danielsson, CEO of Vindus Fans, with over 15 years of experience in the engineering and design industry. I’m here to share what I’ve learned. If you have any questions, feel free to contact me at any time. Let’s grow together!
