Due to forest fires in the area, air filters are being replaced the week of October 5, 2020
Air filters replaced quarterly throughout the district
Chico Unified School District (CUSD) uses MERV 13 rated air filters
As a comparison, typical rated air filters used in home are MERV 5-8
MERV 13 is highest rated filter we can use before impacting air flow into systems
MERV 13 filters pollen, dust, dust mites, mold, bacteria, pet dander, cooking oil smoke, smoke from fires, smog, and virus carriers
Please Note: Law requires a specific amount of outside air flow into classrooms and indoor spaces through our Heating Ventilation and Air Conditioning (HVAC) systems. The calculation works out to approximately 15% of air in a classroom is outside air. The district utilizing an energy management system with all HVAC units set to meet the legal requirement for outside air intake.