Indoor air can be 2-5 times more polluted than outdoor air. Your HVAC system plays a crucial role in maintaining healthy air.
Common Indoor Pollutants
- Dust and dust mites
- Pet dander
- Pollen
- Mold spores
- Bacteria and viruses
- VOCs from cleaning products
- Wildfire smoke (seasonal)
HVAC-Based Solutions
Filter Upgrades - Move from MERV 6 to MERV 11+ - Higher MERV = better filtration - Check system compatibility
Air Purification Systems - **HEPA filters:** 99.97% particle capture - **UV lights:** Kill biological contaminants - **Ionizers:** Help settle particles
Humidity Control - Keep humidity 30-50% - Too low = respiratory irritation - Too high = mold growth
Simple Improvements
Ventilation - Use exhaust fans - Open windows when outdoor air is good - Consider ERV/HRV systems
Source Control - Remove shoes at door - Groom pets regularly - Use low-VOC products - No smoking indoors
Regular Cleaning - Vacuum with HEPA filter - Dust with damp cloths - Wash bedding regularly
Bay Area Considerations
Wildfire Season - Upgrade to MERV 13 filters - Run HVAC fan continuously - Consider portable HEPA purifiers
Coastal Humidity - Monitor humidity levels - Use dehumidification if needed - Watch for mold
Measuring Air Quality
Home Monitors - Measure PM2.5, CO2, humidity - Brands: Awair, Purple Air, IQAir
When to Test - New symptoms at home - After renovation - Suspected mold issues
Good indoor air quality improves health, sleep, and comfort. Start with filter upgrades and build from there.