{"product_id":"bu3523-bu3521-bu3120-hepa-filter-7-pack-replacement-value-pack","title":"BU3523 BU3521 BU3120 HEPA Filter 7-Pack Replacement - Value Pack","description":"\u003cp\u003eIn this review of the NIXOOT 7-pack replacement filters, the bottom line is simple: this set is for owners of the Shark BU3523, BU3521 or BU3120 cordless stick vacuums who want a convenient, cost-effective way to keep suction and filtration consistent between cleanings. The reviewer found the package covers both handheld and auto-empty system needs, provides washable HEPA elements that capture fine dust, and is easy to swap in without tools, making it a practical routine maintenance purchase for households that use their cordless cleaner frequently.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Model:\u003c\/strong\u003e Specifically designed to fit BU3523, BU3521 and BU3120 cordless stick vacuums so users can replace worn parts with confidence.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValue Pack:\u003c\/strong\u003e Includes two handheld pre-motor filters, two auto-empty HEPA filters and two pre-motor filter assemblies with foam and felt so you get multiple spares in one purchase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWashable and Reusable:\u003c\/strong\u003e Filters can be cleaned manually and reused several times, extending service life and helping maintain suction between replacements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Material:\u003c\/strong\u003e Made from high-toughness HEPA filter paper and durable ABS components to trap particles down to 0.3 microns, including pollen and allergens.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e No tools required to remove and replace the parts, which speeds routine maintenance and reduces downtime for cleaning tasks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis replacement set is aimed at owners of the supported Shark cordless models who prefer to do their own maintenance and want a complete set of both handheld and auto-empty system filters in one purchase. It suits households with pets or allergy concerns where frequent filter changes help preserve air quality and vacuum performance.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include people who do not own the specified models or who expect machine-washable filters only; these filters are intended for manual cleaning and scheduled replacement rather than laundry-style washing.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComplete replacement kit covers handheld and auto-empty system needs, reducing the need to buy parts separately.\u003c\/li\u003e\n\u003cli\u003eWashable HEPA media and durable ABS parts offer multiple uses before replacement, lowering long-term cost.\u003c\/li\u003e\n\u003cli\u003eFilters claim to block up to 99.97% of particles as small as 0.3 microns, helping with allergen control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilters must be cleaned manually rather than machine washed, which requires a little extra care and time.\u003c\/li\u003e\n\u003cli\u003eThe set is specific to certain Shark models, so it is not universal and will not fit other vacuum lines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eNIXOOT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Models\u003c\/td\u003e\n\u003ctd\u003eBU3523, BU3521, BU3120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Contents\u003c\/td\u003e\n\u003ctd\u003e2 pre-motor handheld, 2 auto-empty HEPA, 2 pre-motor foam\/felt assemblies (7 total pieces)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eHEPA filter paper with ABS frame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParticle Capture\u003c\/td\u003e\n\u003ctd\u003eUp to 99.97% of particles down to 0.3 microns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCleaning\u003c\/td\u003e\n\u003ctd\u003eManual cleaning; not machine washable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Replacement\u003c\/td\u003e\n\u003ctd\u003eReplace set every 3 months for best performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe NIXOOT 7-pack is a practical maintenance kit for owners of BU3523, BU3521 and BU3120 cordless vacuums who want to keep filtration and suction consistent without hunting for individual parts. It delivers good value by combining handheld and auto-empty system filters, uses HEPA media that helps with allergens, and installs without tools, making it a sensible purchase for routine upkeep.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these filters compatible with my Shark BU3523?\u003c\/strong\u003e\u003cbr\u003eYes, the set is designed specifically for BU3523, BU3521 and BU3120 models.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I machine wash the HEPA filters?\u003c\/strong\u003e\u003cbr\u003eNo, the filters are washable by hand but are not machine washable and should be dried completely before reinstalling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should I replace the filters?\u003c\/strong\u003e\u003cbr\u003eThe manufacturer recommends replacing the filter set every three months for optimal performance, though reusable filters can be manually cleaned between replacements.\u003c\/p\u003e","brand":"NIXOOT","offers":[{"title":"Default Title","offer_id":46493837197531,"sku":"B0DPZHQDFJ","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/714BwVfG4aL._AC_SL1500.jpg?v=1739569873","url":"https:\/\/gearmusthave.com\/products\/bu3523-bu3521-bu3120-hepa-filter-7-pack-replacement-value-pack","provider":"GearMustHave","version":"1.0","type":"link"}