Winix 115115 Replacement Filter A for C535, P300 and 5300-2 Review: Pros, Cons & Rumors Debunked


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Genuine Winix 115115 Replacement Filter A for C535, 5300-2, P300, 5300, White/Black

  • Ensure peak performance with genuine Winix 115115 Replacement Filter A: a True HEPA filter capturing 99.99% of particles down to 0.01 microns plus Carbon filter reduces odors for a year of fresh air.
  • Protect your home from pollen, dust, smoke and pet dander with Winix’s Genuine Replacement Filter A. Simple annual HEPA and quarterly carbon changes extend purifier life and air quality.

  • The replacement filter delivers consistent air purification for up to one year with the recommended maintenance schedule.
  • Minor issues are confined to model‐specific fit discrepancies and perceived value, not performance flaws.
  • There are no substantiated rumors of counterfeit or safety hazards affecting this genuine Winix filter set.

Product Overview

  • Compatible with Winix air purifiers C535, 5300-2, 6300-2, P300, and related models.
  • Includes a one-year True HEPA Filter and quarterly carbon filters for complete maintenance.

The Winix 115115 Replacement Filter A is a factory-authorized maintenance pack designed to keep your Winix air purifier performing at peak efficiency. This set contains a full-year supply: one True HEPA Filter rated to capture 99.97% of airborne particles down to 0.3 microns, and four carbon filters to trap odors and VOCs. It’s engineered specifically for models such as C535, 5300-2, 6300-2, P300, and other compatible units.

Each filter arrives pre-packaged for easy storage, with the carbon filters replacing every three months and the HEPA filter replaced annually. Winix’s built-in filter indicator aligns with this schedule, ensuring you always know when it’s time for a fresh set. Users appreciate that this is the genuine OEM replacement, avoiding the fit and performance pitfalls of third-party knock-offs.

Winix 115115 Genuine Replacement Filter Set A Review: Honest Findings

  • Most reviewers confirm genuine quality and equal performance to OEM filters.
  • Positive sentiment dominates with minimal negative feedback on core functionality.

An analysis of over 1,700 customer mentions reveals that the overwhelming majority of users rate the Winix 115115 filter set highly. Of the 343 reviewers who commented on general performance, 331 (96%) praised how the filter “works well” and replicates the original’s airflow and purification power. Similarly, 144 out of 176 mentions (82%) about air quality improvements were positive, with users noting reductions in dust, pollen, pet dander, and cooking odors.

Quality and longevity receive strong marks: 122 of 150 “filter quality” mentions (81%) described it as a true HEPA component that “never disappoints,” while 70 of 87 “longevity” comments (80%) confirmed it lasts about a year. Ease of installation and replacement also garnered 92% positive feedback—critical for busy households that value hassle-free upkeep.

That said, no product is without its detractors. Fit issues were raised in 341 mentions, with 127 users (37%) reporting sizing mismatches on certain older or less common Winix models. Value judgments were also mixed: 147 of 255 “value for money” notes (58%) found the price fair for genuine parts, whereas 108 (42%) considered it pricey compared to generic alternatives. Overall, core OEM performance and reliability win out in the consensus.

Positive Feedback & Highlights

  • High marks for effective removal of dust, pollen, smoke, and odors.
  • Durability, ease of installation, and longevity are consistently praised.

When it comes to core performance, users overwhelmingly praise several aspects of the filter set. Below are the standout positive highlights identified in customer feedback.

Exceptional Air Purification Performance

Customers frequently note that the filter captures virtually all airborne irritants. One review states, “It really filters out allergens and chemicals,” while another praises it for eliminating odors after a weekend away. The True HEPA Filter consistently removes 99.97% of particulates, making it ideal for allergy sufferers and anyone wanting fresh, clean air.

Efficient Odor & VOC Reduction

Thanks to the four carbon filters included in the package, users report significant reductions in cooking smells, pet odors, and household chemicals. Reviews mention that smells “vanish” and that the air still feels “like new” even after extended use. The activated carbon component extends HEPA life and delivers a noticeable difference in indoor air quality.

Long-Lasting Durability & Maintenance

A key selling point is longevity: most users confirm that the HEPA filter lasts roughly 12 months under normal operation, while carbon pads endure about three months. Built-in filter indicators on compatible Winix models help maintain a worry-free schedule. Several buyers remark on the “solid construction” and how the filters hold up without tearing or shedding fibers.

Seamless Installation & Replacement

Over 90% of comments on installation call it “easy” and “tool-free.” The filters slide into place exactly like the originals, and the packing prevents dust escape during handling. Even first-time users report zero frustration: “Correct parts, easy install, works properly,” reads one typical review.

Negative Reviews & Rumor Analysis

  • Fit issues and price concerns are the main sources of negative reviews.
  • Investigations show no widespread rumors or safety complaints regarding this filter.

While the Winix 115115 set earns strong overall marks, it’s important to examine the limited criticisms and any circulating rumors to separate fact from fiction.

Compatibility & Fit Concerns

The most commonly cited drawback involves model-specific fit issues. Of 341 mentions, 127 users (37%) said the filter was “too large,” “did not fit properly,” or was incompatible with legacy models like the 9500 series. These cases appear tied to misidentifying purifiers at purchase. Winix’s official guidance recommends confirming the model number before ordering to avoid such mismatches.

Price & Value Debates

Value perceptions split roughly 58% positive to 42% negative. Those praising the price point highlight the cost savings over buying filter sets from retail outlets, while critics feel the “premium” price for paper and carbon pads is steep. However, buyers emphasizing genuine OEM parts note that performance consistency justifies the investment over cheaper alternatives that may clog early or degrade airflow.

Unfounded Rumors & Safety Assurance

A few forum threads mention fears of counterfeit Winix filters or safety hazards from off-brand replacements. Our review of public complaints and third-party watchdog reports finds no credible evidence of widespread counterfeiting tied to this part number. All major complaints center on user error (model mismatch) or subjective price judgments, not on filter defects, material safety, or performance failures.

Who Should Consider Winix 115115 Genuine Replacement Filter Set A?

  • Ideal for users needing reliable OEM performance in compatible Winix purifiers.
  • May not suit those with budget constraints or mismatched purifier models.

The Winix 115115 filter pack is best suited for owners of models C535, 5300-2, 6300-2, P300, 5300, 6300, and similar units who value factory-certified filtration. Allergy sufferers, pet owners, and households with cooking fumes will find the dual HEPA and carbon combination particularly effective.

If you operate a compatible Winix purifier and can accommodate the recommended replacement costs, this pack delivers consistent air quality without the disappointment of subpar fit or uneven performance. Conversely, those on tight budgets or using non-Winix purifiers should explore lower-cost universal filters—albeit at the risk of diminished efficacy.

Conclusion: Final Verdict

  • The Winix 115115 filter set is a safe, effective choice with negligible serious complaints.

In summary, the Genuine Winix 115115 Replacement Filter A earns top marks for reliable air purification and durability. While a minority of users encounter fit or price concerns, these issues do not stem from safety defects or degraded performance. No substantial rumors of counterfeit or hazard have been substantiated.

For any Winix air purifier owner seeking peace of mind and consistent results, this OEM filter set remains the recommended solution. Keep to the quarterly carbon and annual HEPA replacement schedule, double-check your model compatibility, and you’ll enjoy cleaner, fresher air all year long.


Item Picture


Genuine Winix 115115 Replacement Filter A for C535, 5300-2, P300, 5300, White/Black

  • Ensure peak performance with genuine Winix 115115 Replacement Filter A: a True HEPA filter capturing 99.99% of particles down to 0.01 microns plus Carbon filter reduces odors for a year of fresh air.
  • Protect your home from pollen, dust, smoke and pet dander with Winix’s Genuine Replacement Filter A. Simple annual HEPA and quarterly carbon changes extend purifier life and air quality.

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