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The best air purifier replacement filter is the one made for your exact purifier. A fresh filter restores airflow and filtration, while the wrong one can leak air around the edges.
We matched genuine replacement filters to the most popular purifiers on Amazon and compared filtration, carbon layers and replacement intervals. Here are 8 picks for 2026.
Quick Answer: The Best Air Purifier Replacement Filter
- Best for Levoit Core 300: Levoit Core 300-P Genuine Replacement Filter
- Best for Winix: Genuine Winix 115115 Replacement Filter A
- Best 1-Year Pack (Coway): Coway Airmega AP-1512HH Filter Replacement Set
- Best for Honeywell HPA: Honeywell HEPA Air Purifier Filter R, 3-Pack
- Best for Blueair 211+: BLUEAIR Genuine 211+ / 211+ Auto Replacement Filter, AllergenBlock
- Best for Larger Rooms: Levoit Core 400S-P Genuine Replacement Filter
- Best for Shark: Shark Anti-Allergen Filter with True HEPA HE1FKPET
- Best H14 Filter: Medify MA-40 Genuine Replacement Filter
The Levoit Core 300 Genuine Filter is the best air purifier replacement filter for the most popular purifier on Amazon. Winix 115115 Filter A is best for Winix, and the Coway AP-1512HH Set is the best 1-year pack.
Best Air Purifier Replacement Filter Comparison Table
| Product | Best For | Type | Key Feature | Buy |
|---|---|---|---|---|
| Levoit Core 300-P Genuine Replacement Filter | Best for Levoit Core 300 | Genuine 3-stage filter | HEPA-grade main filter, AHAM Verifide | Check Price |
| Genuine Winix 115115 Replacement Filter A | Best for Winix | Genuine HEPA + carbon | True HEPA with carbon filters | Check Price |
| Coway Airmega AP-1512HH Filter Replacement Set | Best 1-Year Pack (Coway) | Genuine 1-year filter pack | True HEPA + 2 carbon pre-filters | Check Price |
| Honeywell HEPA Air Purifier Filter R, 3-Pack | Best for Honeywell HPA | Genuine HEPA filters | Captures 99.97% of airborne particles (maker claim) | Check Price |
| BLUEAIR Genuine 211+ / 211+ Auto Replacement Filter, AllergenBlock | Best for Blueair 211+ | Genuine 4-layer filter | 4-layer filtration with carbon | Check Price |
| Levoit Core 400S-P Genuine Replacement Filter | Best for Larger Rooms | Genuine 3-stage filter | For larger rooms | Check Price |
| Shark Anti-Allergen Filter with True HEPA HE1FKPET | Best for Shark | Genuine NanoSeal HEPA | True HEPA with odor guard | Check Price |
| Medify MA-40 Genuine Replacement Filter | Best H14 Filter | Genuine H14 3-stage filter | H14 HEPA, up to 3,000 hours | Check Price |
The 8 Best Air Purifier Replacement Filters by Model
Each best air purifier replacement filter below is matched to a popular purifier model.
Levoit Core 300-P Genuine Replacement Filter
1The genuine Levoit Core 300-P filter combines a pre-filter, HEPA-grade main filter and activated carbon in one cylinder.
👍 Pros & Cons
Pros
- Genuine Levoit fit
- Pre-filter, main filter and carbon in one
- Best-selling purifier filter on Amazon
Cons
- Only fits Core 300 series
📄 Detailed Review
- Type: Genuine 3-stage filter
- Fits: Levoit Core 300, Core 300S
- Key feature: HEPA-grade main filter, AHAM Verifide
It is one of the best-selling air purifier filters on Amazon and drops straight into the Core 300 and 300S.
Levoit notes it supports HEPA-grade performance in sleep mode.
Genuine Winix 115115 Replacement Filter A
2The genuine Winix 115115 Filter A pairs a True HEPA filter with carbon filters for the C535, 5300-2, 6300-2 and P300.
👍 Pros & Cons
Pros
- Genuine Winix True HEPA
- Carbon filters for odors and VOCs
- Fits several popular Winix models
Cons
- Carbon filters need more frequent swaps
📄 Detailed Review
- Type: Genuine HEPA + carbon
- Fits: Winix C535, 5300-2, 6300-2, P300
- Key feature: True HEPA with carbon filters
Winix says the HEPA captures 99.99% of airborne allergens, and the carbon reduces VOCs and odors.
Search the part number 115115 to make sure you get the genuine filter.
Coway Airmega AP-1512HH Filter Replacement Set
3The Coway AP-1512HH set is a 1-year pack with one True HEPA filter and two carbon pre-filters.
👍 Pros & Cons
Pros
- 1-year pack: HEPA + 2 carbon filters
- HEPA lasts about 12 months (maker average)
- Carbon lasts about 6 months
Cons
- Only fits AP-1512HH / 200M
📄 Detailed Review
- Type: Genuine 1-year filter pack
- Fits: Coway AP-1512HH, Airmega 200M
- Key feature: True HEPA + 2 carbon pre-filters
Coway rates the HEPA at about 12 months and each carbon filter at about 6 months on average.
The washable mesh pre-filter on the purifier should be cleaned every few weeks.
Honeywell HEPA Air Purifier Filter R, 3-Pack
4Honeywell Filter R is a genuine 3-pack of HEPA filters for HPA100, 200, 300 and 5000 series purifiers.
👍 Pros & Cons
Pros
- Genuine Honeywell HEPA
- 3-pack for one full set
- Fits HPA series purifiers
Cons
- Pre-filters sold separately
📄 Detailed Review
- Type: Genuine HEPA filters
- Fits: Honeywell HPA100/200/300 and 5000 series
- Key feature: Captures 99.97% of airborne particles (maker claim)
Honeywell says the HEPA filters capture 99.97% of common airborne allergens.
Pair them with Honeywell A pre-filters to protect the HEPA.
BLUEAIR Genuine 211+ / 211+ Auto Replacement Filter, AllergenBlock
5The Blueair 211+ AllergenBlock filter uses 4-layer filtration with an integrated carbon layer for the Blue Pure 211+.
👍 Pros & Cons
Pros
- 4-layer AllergenBlock filtration
- Integrated carbon for light odors
- Genuine fit
Cons
- Replace every 6 months (maker guidance)
📄 Detailed Review
- Type: Genuine 4-layer filter
- Fits: Blueair Blue Pure 211+, 211+ Auto
- Key feature: 4-layer filtration with carbon
Blueair recommends replacing it about every 6 months with continuous use.
The washable fabric pre-filter on the purifier is separate.
Levoit Core 400S-P Genuine Replacement Filter
6The genuine Levoit Core 400S-P filter keeps the larger Core 400S working with its 3-stage system.
👍 Pros & Cons
Pros
- Genuine fit for the Core 400S
- 3-stage filtration
- Suits larger rooms
Cons
- Only fits Core 400S
📄 Detailed Review
- Type: Genuine 3-stage filter
- Fits: Levoit Core 400S
- Key feature: For larger rooms
The 400S covers bigger rooms, so a fresh filter matters more for airflow.
Replace it when the app or filter light says so.
Shark Anti-Allergen Filter with True HEPA HE1FKPET
7The Shark HE1FKPET filter combines NanoSeal True HEPA with an odor guard for the HP102 and HP132.
👍 Pros & Cons
Pros
- NanoSeal True HEPA (99.98%, maker claim)
- Odor guard layer
- Genuine fit
Cons
- Fits HP102/HP132 only
📄 Detailed Review
- Type: Genuine NanoSeal HEPA
- Fits: Shark HP102, HP102PET, HP132
- Key feature: True HEPA with odor guard
Shark recommends replacing it every 6 to 12 months.
It is a good match for small bedrooms and offices.
8The Medify MA-40 filter uses a pre-filter, H14 HEPA and carbon, rated for up to 3,000 hours or 4–5 months.
👍 Pros & Cons
Pros
- H14 HEPA (99.99% at 0.1 micron, maker claim)
- Up to 3,000 hours / 4–5 months
- 3-stage filtration
Cons
- MA-40 only
📄 Detailed Review
- Type: Genuine H14 3-stage filter
- Fits: Medify MA-40
- Key feature: H14 HEPA, up to 3,000 hours
H14 is a step above the common H13 grade in the maker’s rating.
Track hours with the purifier’s filter indicator.
How We Chose the Best Air Purifier Replacement Filter
To choose the best air purifier replacement filter, we matched genuine filters to popular purifier models and compared filtration grade, carbon layers, rated life and owner feedback.
For EPA advice on choosing and maintaining air cleaners and their filters, see the EPA Guide to Air Cleaners in the Home.
Product details in this guide are based on manufacturer specifications and verified owner feedback. Read more on our How We Test page.
Buying Guide: How to Choose a Replacement Filter
Keep these points in mind to find the best air purifier replacement filter for your purifier.
Match the model number first
Every purifier uses its own filter shape. Find the model number on the label and match it to the filter part number before you buy.
Genuine vs. compatible filters
Genuine filters guarantee fit and the maker’s rated performance. Compatible filters cost less, and many fit well, but quality varies; read recent reviews.
True HEPA, HEPA-grade and H13/H14
True HEPA traps at least 99.97% of 0.3-micron particles. H13 and H14 grades are higher ratings. Watch for vague terms like HEPA-type.
What the carbon layer does
Activated carbon adsorbs odors, smoke and some VOCs. It fills up faster than HEPA, so carbon layers or pre-filters often need changing more often.
How often to replace
Most makers suggest about 6–12 months for the main filter and more often for carbon pre-filters. Smoke, pets and running 24/7 shorten filter life.
Do not wash the HEPA
Unless the maker says it is washable, do not wash or vacuum a HEPA filter; it can damage the media. Unplug the purifier before changing filters.
How to Change a Purifier Filter
A simple 4-step swap:
- Unplug the purifier.
- Remove the old filter and bag it.
- Unwrap the new filter fully.
- Reset the filter indicator.
Quick answers about the best air purifier replacement filter.
Frequently Asked Questions
What is the best air purifier replacement filter?
The best air purifier replacement filter is the genuine one for your model; the Levoit Core 300 filter is our top pick for the most popular purifier.
Are compatible filters OK?
Many fit well, but quality varies; genuine filters guarantee the rated performance.
How often should I replace the filter?
Usually every 6–12 months; carbon pre-filters more often.
Can I wash a HEPA filter?
Only if the maker says it is washable.
Final Verdict
Our final pick for the best air purifier replacement filter is the Levoit Core 300 Genuine Filter. Choose the Winix 115115 Filter A if you want a Winix filter, or the Coway AP-1512HH Filter Set for a 1-year Coway pack.
Related Guides
More air purifier guides:
- Best Air Purifier Replacement Filters
- Best Air Purifier for Bedroom
- Air Purifier Cleaning Kit
- Best Air Purifier With Carbon Filter for Bedroom
- Best Air Purifier for Small Bedroom
Product details are based on manufacturer specifications at the time of writing. Prices and availability change often, so check Amazon for the latest price.
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