Shop Filters by Type
Every home or business has unique air quality and filtration needs. The type of filter you choose makes a difference. Whether your goal is cleaner air, purer water, added humidity, or protection from wildfire smoke, we have the right filter for you. Explore our most popular types below to compare benefits, lifespans, and best-use cases. Every order ships fast and free.
Choose Your Air Filter Type Below
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Furnace Filters
Capture dust, pollen, and pet dander to protect your HVAC and indoor air. Available in MERV 8–13.
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Water Filters
Reduce sediment, chlorine taste/odor, and select contaminants for better-tasting water at home.
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Humidifier Filters
Trap minerals and impurities to deliver cleaner, comfortable moisture through your humidifier.
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Wldfire Smoke Filters
Target fine smoke particles and odors with higher-efficiency media and optional carbon.
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Air Purifier Filters
Keep your purifier performing—replacement HEPA and carbon options for leading models.
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Best Sellers
Shop our best selling air filters. Your go-to lineup of top-rated air filters trusted by thousands of homeowners that consistently deliver performance, reliability, and value, month after month.
Compare Air Filter Types
Furnace Filters (MERV 8–13): Whole-home air; balances airflow and capture.
Furnace Filters (MERV 8–13): Whole-home air; balances airflow and capture.
Water Filters: Drinking/cooking; pitcher, fridge, under-sink, or whole-house options.
Water Filters: Drinking/cooking; pitcher, fridge, under-sink, or whole-house options.
Humidifier Filters: Helps reduce white dust; supports healthier humidity levels.
Humidifier Filters: Helps reduce white dust; supports healthier humidity levels.
Wildfire Smoke Filters: Fine particulate + odor control; best during smoke season/events.
Wildfire Smoke Filters: Fine particulate + odor control; best during smoke season/events.
Air Purifier Filters: Room-by-room; HEPA for particles, carbon for odors/VOCs.
Air Purifier Filters: Room-by-room; HEPA for particles, carbon for odors/VOCs.
Replacement Cadence
Furnace: 1" every 1–3 months; 4–5" every 6–12 months
Furnace: 1" every 1–3 months; 4–5" every 6–12 months
Water: per capacity/brand (often 3–6 months)
Water: per capacity/brand (often 3–6 months)
Humidifier: 1–3 months in season
Humidifier: 1–3 months in season
Wildfire smoke: check monthly during events; replace as needed
Wildfire smoke: check monthly during events; replace as needed
Air purifier: HEPA 6–12 months; carbon 3–6 months (brand-specific)
Air purifier: HEPA 6–12 months; carbon 3–6 months (brand-specific)
Shop Best Sellers from Aerostar Air Filters
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From $40.76$50.95Unit price /UnavailableIn stock -
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Frequently Asked Questions
Which filter type is best for allergies?
Which filter type is best for allergies?
Furnace filters in MERV 11–13 or HEPA air purifier filters. Add carbon if odors are a concern.
What should I use for wildfire smoke?
What should I use for wildfire smoke?
A high-efficiency furnace filter (MERV 13 ideal if your system allows) and/or an air purifier with HEPA + carbon. Replace more frequently during smoke events.
How do I choose between a furnace filter and an air purifier?
How do I choose between a furnace filter and an air purifier?
Furnace filters treat whole-home air whenever your HVAC runs. Air purifiers target specific rooms and can add HEPA capture even if your HVAC can’t.
How often should I replace each type?
How often should I replace each type?
It varies by type and usage; see our replacement cadence above or check the product page for brand-specific guidance.
Do higher MERV or HEPA filters restrict airflow?
Do higher MERV or HEPA filters restrict airflow?
They can if your system isn’t designed for them. Follow your HVAC specs; when in doubt, choose MERV 8–11 or use a room air purifier for HEPA-level capture.