{"product_id":"winix-replacement-filter-a-115115-for-c535-5300-series-true-hepa-activated-carbon-1-year-set","title":"Winix Replacement Filter A 115115 for C535\/5300 Series — True HEPA + Activated Carbon 1-Year Set","description":"\u003cp\u003e\u003cstrong\u003eGenuine Winix 115115 Replacement Filter A is a complete one-year filter set—True HEPA plus activated carbon filters designed to restore your Winix air purifier’s original particle capture and odor control.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese replacement filters are made for Winix models such as C535, 5300-2, 6300-2, P300 and similar units. The set includes a high-efficiency True HEPA element that captures microscopic particles and a multi-pack of activated carbon pre-filters that trap larger debris and reduce household odors. Replacing worn filters keeps an air purifier operating at peak efficiency and helps maintain indoor air quality over time.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the True HEPA filter improve air quality in my home?\u003c\/h3\u003e\n\u003cp\u003eThe True HEPA filter in this Winix 115115 set is engineered to capture very small airborne particles, helping reduce the concentration of dust, pollen, pet dander and smoke in living spaces. It restores the purifier’s ability to filter down to submicron sizes when used as recommended.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCaptures particles as small as 0.3 microns (high-efficiency HEPA performance)\u003c\/li\u003e\n  \u003cli\u003eRemoves common indoor allergens like dust and pet dander\u003c\/li\u003e\n  \u003cli\u003eHelps reduce visible dust buildup on surfaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat role do the carbon filters play and how often should I change them?\u003c\/h3\u003e\n\u003cp\u003eThe included activated carbon filters focus on trapping larger particles and absorbing odors from cooking, pets and smoke, which prevents odors from circulating. Regular carbon filter swaps extend the life and effectiveness of the True HEPA element by keeping it from clogging with larger contaminants.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAbsorbs common household odors and volatile organic compounds (VOCs)\u003c\/li\u003e\n  \u003cli\u003eRecommended replacement: carbon filters every 3 months for best performance\u003c\/li\u003e\n  \u003cli\u003eHelps preserve True HEPA efficiency by capturing larger debris first\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich Winix models are compatible with this replacement set?\u003c\/h3\u003e\n\u003cp\u003eThe Winix 115115 Replacement Filter A is compatible with several popular Winix air purifiers. Check your unit model number to confirm fit before purchasing to ensure proper installation and performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with Winix models C535, 5300-2, 6300-2, P300 and 5300\u003c\/li\u003e\n  \u003cli\u003eDesigned as the genuine factory replacement for reliable performance\u003c\/li\u003e\n  \u003cli\u003eSearch Winix 115115 or part number B002QUZJAS to verify authenticity\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I maintain these filters to get the longest life from my purifier?\u003c\/h3\u003e\n\u003cp\u003eFollowing a regular replacement schedule and using carbon pre-filters as intended keeps the True HEPA performing longer. Most users will replace the HEPA once per year and swap carbon filters quarterly; many Winix units also include a filter-change indicator to simplify timing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplace True HEPA once every 12 months for typical household use\u003c\/li\u003e\n  \u003cli\u003eChange carbon filters every 3 months, or sooner with heavy odor exposure\u003c\/li\u003e\n  \u003cli\u003eUse the purifier’s filter-check light as a reminder for replacements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: The Winix 115115 Replacement Filter A set is intended for owners of compatible Winix purifiers who want genuine OEM parts to ensure consistent performance. It’s a practical choice for households with pets, allergy sufferers looking to maintain lower indoor allergen levels, or anyone wanting to remove cooking and smoke odors while protecting their purifier’s long-term function. Using the genuine Winix replacement kit helps maintain warranty-aligned parts and predictable filtration results.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I replace the Winix 115115 HEPA filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Replace the True HEPA filter every 12 months under typical household use for optimal performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will these filters fit my Winix 5300-2 or P300?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the Winix 115115 set is compatible with models including 5300-2, C535, 6300-2, P300 and 5300.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Winix","offers":[{"title":"Default Title","offer_id":54587050983763,"sku":"B002QUZJAS","price":76.56,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1095\/4257\/2371\/files\/winix-115115-front-packaging.jpg?v=1786698576","url":"https:\/\/findsworth.co.uk\/products\/winix-replacement-filter-a-115115-for-c535-5300-series-true-hepa-activated-carbon-1-year-set","provider":"Findsworth","version":"1.0","type":"link"}