What do we recommend for schools? If you want an air purification system for a large area like a school or gym, it's important to choose the right unit. Not all purifiers are created equal, and only some can make a significant impact in a large space. We recommend Aerus air purifiers that use ActivePure Technology for large spaces. These purifiers work well because: They can filter out viruses They target contaminants and allergens You can choose permanent or portable options A few of the products we carry are the AP500, Hydroxyl Blaster, Aerus Pure & Clean and the Beyond Guardian Air.