All three air purifiers are different in terms of their air exchange rate and the areas of application. VisionAir Blue Line is usually installed in commercial settings, including hospitals, schools, and nursing homes to filter more than 90% of air and remove harmful odors, using the latest and high-quality carbon filters. HF Industrial is an ideal solution for industries as it has a higher volume of air intake. Lastly, SF Kitchen Filtration is specifically designed for commercial kitchens to remove cooking odors and oil fumes