PAC Inventory & Replacement 

• In the prior school year the Facilities department installed portable air cleaners (PACs) in all classrooms, libraries and cafeteria spaces. 
• Over the Summer, custodial staff completed a review at each school site to identify classroom, library, or cafeteria spaces that were missing PACs.
• During the week of August 8th, warehouse staff installed PACs in classroom, library or cafeteria spaces where they were missing.
• If you have a classroom, library or cafeteria without a PAC please contact Greg Markwith (markwithg@sfusd.edu) and he will coordinate the delivery of the unit.

PAC Filter Replacements 

• School sites have 3 models of PACs - a large white model (Wright model), a large black model (Austin model), and a smaller unit.
• Wright models require an annual pre-filter replacement. This replacement was completed in July.
• Austin models require filter replacement every five (5) years - no replacements are needed at this time.
• Small units receive filter replacements on an annual basis. Site filter replacements are on a staggered schedule throughout the year. Filter changes are on schedule..