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1 Choose Your Filter Size
💡 Not sure of your size? Check the edge of your current filter — the size is printed on the cardboard frame.
2 Choose Your MERV Rating
Good
8
MERV 8 — Basic
Captures everyday household particles. A solid baseline for most homes with no allergy concerns.
  • Dust & lint
  • Pollen
  • Mold spores
  • Pet dander
Better
11
MERV 11 — Allergen Control
Adds fine dust and allergens. Good choice if anyone in the household has allergies or mild asthma.
  • Everything in MERV 8
  • Fine dust particles
  • Auto emissions
  • Smoke particles
  • Most allergens
IAQ Recommended
Best
13
MERV 13 — Fine Particle Capture
Captures fine particles including bacteria, virus carriers, and PM2.5. Recommended by IAQ professionals for optimal indoor air quality.
  • Everything in MERV 11
  • Bacteria
  • Virus carriers
  • Ultrafine smoke
  • PM2.5 particles
Your selection
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Learn about MERV ratings →
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Quick Reference — All Sizes

Browse all size + MERV combinations. Filter by depth category below.

Filter Size MERV Rating Best For Buy on Amazon

Why MERV Rating Matters

8
Good
MERV 8 is the minimum recommended for residential HVAC. It handles standard household particles like dust, pollen, and pet dander. Great for homes with no specific air quality concerns — change every 60–90 days.
11
Better
MERV 11 adds filtration of fine particles and most allergens. Recommended for households with allergy sufferers, mild asthma, or homes near high-traffic roads. Slightly restricts airflow — verify your HVAC supports it. Change every 60 days.
13
Best
MERV 13 is the IAQ professional standard. It captures PM2.5 particles, bacteria, and virus-carrying droplets. Best for homes with immune-compromised occupants, respiratory conditions, or wildfire smoke exposure. Change every 30–45 days.