In the AHU HVAC industry, ID fans are mainly used when the system needs controlled exhaust, negative pressure, fume removal, hot air removal, or dirty-air extraction instead of simple supply air movement. In normal comfort HVAC, the terminology may be supply fan,...

In a shot blasting plant, the ID fan is not just an exhaust fan. It creates the suction needed to pull dust-laden air from the blasting chamber, separator and dust collection system. If the fan is undersized, wrongly selected or poorly maintained, the plant can face...