• All CSD classrooms and other spaces meet or exceed ASHRAE standard 62.1 expectations for outside air exchange by providing at least 10 cubic feet of air per minute (cfm) per person, calibrated for the maximum number of people in the space (30 people for a standard classroom in a non-pandemic environment).  
    • Air in all areas at DHS is circulated through systems containing Global Plasma Bipolar Ionization modules.  In classrooms in the 1500s, 2000s, 2500s, 3000s, and 3500s halls, each wall unit contains an ionizing device.  
    • In the newer sections of the building, these devices are woven into the overall air system. 
    • In total, DHS contains more than 150 individual bipolar ionization modules.
    • As long as the fan in a unit is blowing, the air is being circulated and cleaned in the room.  Thus, it will be important that we do not open these units to manually adjust flow or to turn them off if we’re not happy with the temperature of air they’re blowing.
    • Our facilities department will run the fans in our units while buildings are occupied, turn them off overnight to conserve energy, then run the units at a high rate of speed for two hours pre-occupancy to flush the entire building before classes resume the following day.  
    • The most important step you can take to assist in keeping our air clean and circulating is to keep your windows closed.  As you’ve likely experienced in your own home, opening windows and doors while your A/C is on only taxes the system and invites unwanted allergens and humidity into the conditioned space.  If we open our windows in DHS, we’ll be overtaxing a system that’s been finely tuned to maximize fresh air flow and cleaning.  Put plainly, our air will be cleaner and fresher if we keep our windows shut.