Air Quality Resources
Free printable guides, reference cards, and tools to help you improve indoor air quality. Download, print, or share with others.
Printable Guides
ACH Quick Reference Card
Printable pocket guide with ACH recommendations for every room type, CADR formulas, and quick sizing tables.
Room-by-Room Air Quality Checklist
Comprehensive checklist covering pollution sources, ventilation, and air purifier placement for every room in your home.
Filter Comparison Chart
Visual guide comparing HEPA H13, MERV-16, and other filter types with efficiency ratings and use cases.
PM2.5 Health Impact Guide
Understanding fine particulate matter, health effects at different AQI levels, and protection strategies.
Shareable Infographics
PM2.5 Size Comparison
Visual guide showing how small PM2.5 particles are compared to human hair and pollen.
Filter Efficiency Chart
Compare HEPA, MERV-16, and other filters at different particle sizes.
UK Seasonal Calendar
Month-by-month guide to air quality challenges and preparation tips.
Interactive Tools & Widgets
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All our guides are based on peer-reviewed research. Visit our research library for sources and citations.
All resources are free to use and share. Attribution to Clean Air Hub appreciated but not required.