ACH Ventilation in Factories: Why Air Changes Per Hour Matter for Industrial Safety and Efficiency Introduction Maintaining good indoor air quality is essential in every factory, regardless of its size or industry. Manufacturing processes often generate heat, dust, fumes, moisture, and airborne contaminants that can affect worker health, equipment performance, and production quality. One of the most effective ways to maintain a healthy industrial environment is by designing a ventilation system based on the correct Air Changes per Hour (ACH). ACH is a key factor in industrial ventilation design because it determines how frequently the air inside a factory is replaced with fresh air. Selecting the right ACH helps improve air quality, control temperature, remove pollutants, and create a safer workplace. This article explains what ACH is, why it is important, and how it benefits modern factories. What Is ACH in Factory Ventilation? ...