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An AAF Flanders Brand · Authorized Dealer Since 2006

NaturalAire Pleated Air Filters

Individually sealed pleated filters for residential and light-commercial HVAC. Three MERV tiers — 8, 10, and 13 — built on the same trusted construction. Each filter shipped in its own protective wrapping for clean installation, every time.

Choose your MERV Shop by size

What sets NaturalAire apart

NaturalAire is AAF Flanders' individually sealed pleated filter line — the same engineering that goes into commercial Pre-Pleat product, packaged and sized for residential and light-commercial use. The defining feature: every single filter ships in its own protective wrapping, so dust from the warehouse, the truck, or the supply closet never touches the media before it goes into your system.

Individually sealed

Every filter ships in its own protective wrapping. Pleats arrive uncrushed, media stays clean, installation is straight from the bag.

Three MERV tiers

Standard MERV 8, Microparticle MERV 10, and Healthy Ultra MERV 13 — same construction, different efficiency. Step up without changing brands.

AAF Flanders engineering

The same media, frame construction, and quality control that backs AAF's commercial product line. UL 900 Classified across all three MERV tiers.

3-month service life

Designed for 90-day replacement intervals in standard residential systems — 3× the change interval of fiberglass at meaningfully higher efficiency.

Choose your NaturalAire MERV tier

All three tiers are individually sealed, all three install in standard 1″ residential racks, all three are AAF Flanders engineered. The only question is what level of capture your home or facility needs.

Baseline pleated
MERV 8
NaturalAire Standard

The default residential pleated upgrade from fiberglass. Captures pollen, dust mites, larger mold spores, textile fibers, and pet hair. The right call for households without specific allergy or air-quality concerns.

  • 77 sizes in stock
  • 1″ depth, 12-pack case pricing
  • 90-day replacement interval
Shop MERV 8 →
Allergy & pet households
MERV 10
NaturalAire Microparticle

The middle-tier upgrade. Adds capture of finer mold spores, pet dander, and smaller dust particles down to 3 microns. Specified for households with allergies, pets, or anyone who notices visible dust on surfaces between cleanings.

  • 47 sizes in stock
  • 1″ depth, 12-pack and 6-pack options
  • 90-day replacement interval
Shop MERV 10 →
Aerosol & smoke capture
MERV 13
NaturalAire Healthy Ultra

The highest residential efficiency tier. Captures bacteria-sized particles, fine smoke, virus carriers, and ultrafine pollen down to 0.3 microns. CDC-recommended baseline for occupied spaces; specified by allergists and immunology-aware households.

  • 48 sizes in stock
  • 1″ depth, 12-pack and 4-pack options
  • 90-day replacement interval
Shop MERV 13 →
Odor & VOC

NaturalAire Odor Eliminator

MERV 8 base media combined with activated carbon and baking soda for odor, cooking smell, and VOC capture. The right pick for kitchens, smokers, pet households, and homes near agriculture or industrial sources.

Shop Odor Eliminator →
Reusable

NaturalAire Permaire & Kwik Kut

Permaire washable foam pads and Kwik Kut pre-cut foam filters for permanent racks, return air boxes, and grille applications. Wash and reuse instead of disposing.

Shop washable →

96 NaturalAire sizes in stock

Every common residential size plus dozens of compact, fractional, and oversized fits that other pleated lines don't carry. All 1″ depth.

Common residential

14x20x1 14x25x1 16x20x1 16x25x1 18x20x1 18x24x1 18x25x1 20x20x1 20x25x1 20x30x1 24x24x1 25x25x1

Compact sizes

8x14x1 8x24x1 8x30x1 10x10x1 10x20x1 10x24x1 10x25x1 10x30x1 12x12x1 12x18x1 12x20x1 12x24x1 12x25x1 12x30x1 12x36x1 14x14x1 14x18x1 14x24x1 14x30x1 15x20x1 15x25x1 15x30x1 16x16x1 16x24x1 18x18x1 20x22x1 20x24x1 21x21x1 21x22x1 22x22x1

Fractional & non-standard

11-1/2x11-1/2x1 17-1/2x17-1/2x1 17-1/2x23-1/2x1 23-1/2x23-1/2x1 13x20x1 14x22x1 17x21x1 17x29x1 12x27x1

Larger commercial

10x36x1 14x36x1 16x30x1 18x30x1 18x36x1 20x36x1 24x30x1 24x36x1 25x30x1

Don't see your size? Build a custom NaturalAire pleated filter in 1/8″ increments, or request a quote for bulk facility runs.

When NaturalAire is the right call

Good fit
  • Residential furnace, AC, or heat pump systems running standard 1″ filter racks
  • Light-commercial offices, retail, and small clinics with residential-style filtration
  • Anyone upgrading from fiberglass who wants real particle capture without going commercial
  • Households with allergies (MERV 10), pets (MERV 10–13), or post-COVID IAQ awareness (MERV 13)
  • Property managers standardizing across multi-unit residential portfolios
Consider an alternative

Looking at alternatives? Compare with EZ Flow fiberglass (MERV 1–4, equipment protection) or our PrimeShield pleated tier — produced to PrimeShield specs by partner manufacturers, positioned alongside NaturalAire.

NaturalAire filters: common questions

What does "individually sealed" actually mean?

Every single NaturalAire filter ships in its own protective wrapping — not just the case. When a filter sits in a warehouse, on a delivery truck, or in your supply closet for weeks before installation, the wrapping keeps dust and contaminants off the media so the filter performs at full rated efficiency from day one. It's a small detail with a real performance impact.

What's the difference between MERV 8, 10, and 13?

MERV 8 (NaturalAire Standard) captures pollen, larger dust, dust mites, and textile fibers — the residential default. MERV 10 (Microparticle) adds finer dust, mold spores, and pet dander. MERV 13 (Healthy Ultra) adds bacteria, fine smoke, and virus-sized aerosols. All three install in the same 1″ rack — the only differences are media density and capture efficiency.

How often should I replace a NaturalAire filter?

Every 90 days is the standard residential interval across all three MERV tiers. Households with pets, smokers, or allergy concerns may want to step to 60-day replacement. Light-commercial applications often run 60–90 days depending on occupancy and dust load. The filter doesn't degrade over time — it loads with particles and starts restricting airflow.

Do NaturalAire filters fit Air Bear or Aprilaire cabinets?

No — NaturalAire is a 1″ deep pleated filter for standard return-grille and filter-rack racks. Whole-home media cabinets (Trion Air Bear, Aprilaire, Honeywell, Space-Gard) take 4″ or 5″ deep media filters in different sizes. See our Air Bear & Whole-Home collection for cabinet-compatible filters.

Will MERV 13 restrict airflow on my system?

NaturalAire Healthy Ultra MERV 13 has higher pressure drop than MERV 8 by design — more efficient capture means more resistance. On most modern residential systems with a 1″ filter slot it works without issue. On older systems already operating near static pressure limits, your HVAC contractor may want to verify before stepping up. If you're unsure, MERV 10 is the safer mid-tier upgrade.

Do you carry the NaturalAire Odor Eliminator?

Yes. NaturalAire Odor Eliminator combines MERV 8 base media with activated carbon and baking soda for cooking smells, pet odors, smoke, and VOCs. Shop the Odor Eliminator collection. It's the right pick for kitchens, pet households, smokers, and homes near agricultural or industrial odor sources.

Are NaturalAire filters made by AAF Flanders?

Yes. NaturalAire is manufactured by AAF Flanders, the world's largest air filter manufacturer. RememberTheFilter has been an authorized AAF Flanders dealer since 2006, with every NaturalAire order sourced through official channels.

Do you carry custom NaturalAire sizes?

Yes. Non-standard NaturalAire pleated sizes are available through our custom filter builder in 1/8″ increments. For bulk facility runs of non-catalog sizes, request a quote.

How do I measure my filter for replacement?

Remove your existing filter and check the nominal size printed on the frame (like 16x25x1). That's usually the size you order. If your system doesn't use a standard nominal size, measure the actual filter slot to the nearest 1/8″ — our measurement guide walks through it.

Buying NaturalAire in bulk for a facility or property?

We offer case pricing, standing delivery schedules, and PO terms for qualified commercial accounts. Common use cases: multi-family housing portfolios, hotels, light-commercial facilities, school districts, and property management companies standardizing on AAF specs.

Request a quote Commercial services