Quick ask: what courses tie ventilation calculations to real health gains? I’m an air quality specialist and after fixing return leaks and upsizing a filter rack to fit MERV 13s in a 28-classroom school last week, PM2.5 dropped about 35% and static fell from 0.9 to 0.6 in.w.c., so I’m hunting CEUs that cover filter selection vs pressure drop, duct leakage, and field balancing with a manometer/balometer.
I’d pair ASHRAE ALI’s filtration/IEQ modules with NCI’s Commercial Air Balancing — both give CEUs and connect MERV 13 selection to pressure-drop curves, duct leakage testing, and field TAB (see https://www.ashrae.org/education--certification/learning-institute). Small step: on your next school, log total external static and filter ΔP at three fan speeds and plot against the filter’s curve to validate gains like your “0.9 to 0.6 in.w.c.” drop — , too many courses skip that. Do you need NATE or state-board credit?
Building on @slee, NAFA’s CAFS ties MERV 13 selection to pressure-drop curves and energy, and it’s solid for predicting shifts like your 0.9→0.6 in.w.c. after the rack change; it offers CEUs: CAFS and NCT Exams - National Air Filtration Association. For the field piece on leakage and balancing, NEBB’s TAB Technician course pairs well and gets into pitot traverses and fan curves. Worth it if you’re doing more 28-classroom retrofits.
Check out ACGIH’s Industrial Ventilation course (Industrial Ventilation Learning - ACGIH) — CEUs included and nerdy but practical, making you connect airflow math to exposure reduction; not filter-heavy, but the fan/system-effect sections map cleanly to school AHUs. @slee already hit ASHRAE/NCI; if you’re trend-logging CO2 and PM, this will help tie those traces to predicted health gains.