A common high-bay mistake is replacing legacy wattage one for one. Efficacy, optics and mounting height determine useful light, so wattage alone cannot predict the floor result.
Define the zone and task plane, shortlist by lumen output and distribution, then verify quantity, spacing and controls in the layout.
Height sets the initial range
As height increases, lumen output and optical control matter more; lower ceilings need glare and hot-spot control.
- Below 6 m prioritize comfort
- At 6-12 m compare medium-wide beams
- Above 12 m verify narrower optics and intensity
Efficacy must include reliability
High efficacy can reduce power but should be checked with chip, driver, thermal design, ambient temperature and warranty.
- Compare whole-fixture efficacy
- Confirm operating temperature
- Model economy and high-efficiency options separately
Match construction to environment
Dust, moisture, oil mist, cold and heat change protection, material and driver needs.
- Confirm whole-fixture IP
- Check low-temperature start
- Keep thermal clearance in hot zones
Match controls to operation
Intermittent warehouses suit sensors, while continuous production may use zoning or daylight control.
- Avoid sensor blind spots
- Set delay and minimum output
- Keep manual and fault fallback
