Attachment 1: Example Preventive Maintenance Schedule
It is highly recommended that schools have a preventive maintenance schedule--edit according to operational needs of each
school building. Consult HVAC contractor, HVAC vendors, flooring manufacturer, cleaning product vendor, facility staff, etc.
Daily
AIR HANDLING UNITS
Intake unobstructed
Air Flows In
No Pollutant Sources Nearby
Intake Dampers Operational
Outdoor Damper Open (at least 10%)
Filters Replaced/Fitted Properly
Moisture (e.g., drain pans)
Cleanliness
Belts
Lubrication
Cleaning of Heating & Cooling Coils
Cleaning of Drainage Areas
Calibration of Sensors & Controls
Cleaning of Ductwork
Airflow Balancing
Remove Snow Around Intakes, Exhaust, Stacks
LOCAL EXHAUST SYSTEMS
Functional
Correct Air Direction
Rooftop Fans Undamaged & Unobstructed
Proper Exhaust Air Volume
GENERAL BUILDING CLEANING
Garbage
Carpet and Hard Floors
Wet Mop Hard Floors
Tables
Entry Mats
Cushions & Upholstered Furniture
Shelves, & Cupboard Tops
Ventilation Diffusers
Provide each Room with All-purpose Green cleaner
Check & Maintenance Vacuum Cleaners
Deep Clean Carpets & Re-finish Hard Floors
Spot Deep Clean Small Spills/Stains
OTHER
Fill/Flush: floor drains, unused sinks & toilets
Thermostats Functional
Moisture Inspection: ceiling, plumbing, roof, exterior
Check Hazardous Chemicals Storage
Weekly 3 Months 6 Months Yearly 2 Years
As Needed
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Minnesota Department of Health
Indoor Air Quality Management Plan Development Package
Att.1. Example Preventive Maintenance
May 2016
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Replace Stained Ceiling Tiles
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Your preventive maintenance schedule could include examining:
1. Light fixtures for burnt-out lamp ballasts
2. Proper shielding of outdoor air intakes to prevent entry of wind driven rain and snow
3. Measuring fresh air supply rates and comparing to design specifications, to see whether the HVAC
system is delivering adequate fresh air for the space and number of people it serves
4. Fresh air supply intake more frequently, to see if it’s cut off
5. Unit ventilators more frequently than other ventilation equipment to see if cleaning should be done
more often (such as every month)
6. Plumbing hardware for inappropriate sizing
7. Landscaping and grounds operations (such as presence of mud at building entrances, sloping land
away from buildings, pest entry points, grass clippings discharged into unit vents)
8. Attic insulation and ventilation to keep the attic tempered, and reduce the problem of ice dams on
the roof
9. Different areas seasonally (create a different checklist for each season)
Minnesota Department of Health
Indoor Air Quality Management Plan Development Package
Att.1. Example Preventive Maintenance
May 2016