How to Choose the Right Air Filter for Your Home

Understanding MERV Ratings

MERV (Minimum Efficiency Reporting Value) rates filter effectiveness:

• MERV 1-4: Basic filtration, captures large particles
• MERV 5-8: Better for residential use, captures dust mites and mold spores
• MERV 9-12: Good for allergies, captures fine dust
• MERV 13-16: Hospital-grade, captures bacteria and viruses

Peninsula Air Quality Considerations

Our area has unique air quality challenges:

• Wildfire smoke during fire season
• Coastal fog moisture
• Pollen from local vegetation
• Traffic pollution near highways

Filter Types Explained

Fiberglass Filters

• Inexpensive but low effectiveness
• Change monthly
• Best for: Budget-conscious, no allergies

Pleated Filters

• Better filtration, longer life
• Change every 3 months
• Best for: Most Peninsula homes

Electrostatic Filters

• Washable and reusable
• Good dust capture
• Best for: Eco-conscious homeowners

HEPA Filters

• Highest filtration level
• May require HVAC modifications
• Best for: Severe allergies, respiratory conditions

Our Recommendation

For most Peninsula homes, we recommend MERV 8-11 pleated filters changed every 3 months. Higher isn't always better - very high MERV ratings can restrict airflow and strain your system.