{"meta":{"api_version":"v1","data_status":"verified","category":"air-purifier","market":"GB","evidence_checked_at":"2026-07-30T20:39:46.000Z","generated_at":null,"comparison_schema_version":"review-led-category-index-v1.0","method_version":"flexible-review-led-category-v1.1","comparison_status":"published_bounded_comparison","included_product_count":5,"quality_ordered_count":5,"routed_specialist_count":0,"purchase_advice_supported":false,"ranking_basis":"Flexible qualitative exact-model review synthesis using category-specific evidence needs and visible disagreement.","review_policy":"Published bounded comparison using corroborated exact-model evidence, one clear editorial order and specialist labels.","commercial_policy":"Price, availability, affiliate state and conversion data cannot change the review-led result.","methodology_url":"https://agentreviewdata.com/methodology#review-led-all-categories"},"data":{"schema_version":"review-led-category-index-v1.0","method_version":"flexible-review-led-category-v1.1","category":"air-purifier","market":"GB","published_at":"2026-07-30T21:32:49Z","evidence_checked_at":"2026-07-30T20:39:46.000Z","status":"published_bounded_comparison","purchase_advice_supported":false,"title":"Air purifier review-led quality comparison","summary":"Five exact large-room purifiers have enough controlled and hands-on evidence for a bounded throughput-led comparison. Measured clean-air delivery at useful noise levels, room-clearing behaviour, filters and ownership experience lead the judgement.","cohort":{"tracked_product_count":20,"reviewed_product_count":5,"quality_ordered_count":5,"routed_specialist_count":0,"review_and_test_source_count":11,"independent_publisher_group_count":6,"unreviewed_product_count":15,"not_whole_market":true,"coverage_status":"material_gaps_visible"},"candidate_universe_rule":"Tracked GB air purifiers with exact model matches to controlled particle-removal or certified CADR evidence plus a second independent publication. Small-room products are not mixed into this large-room order.","selection_note":"The cohort focuses on five large-room models with the strongest exact evidence. Other exact products with only one current independent source remain outside the order rather than borrowing results from US or nearby variants.","quality_basis":{"uses_universal_numeric_score":false,"uses_price":false,"uses_availability":false,"uses_affiliate_or_conversion_data":false,"approach":"Keep certified and independently measured airflow in their original units and conditions. Judge useful clean-air throughput with noise, observed room clearing, filter and sensor behaviour, app reliability and ownership burden. Do not average conflicting tests or use claimed coverage area as a quality score.","minimum_publication_gate":"Two independent publisher groups per ordered exact model, including certified or independently measured clean-air performance and visible operating or ownership context.","topic_priority":["Measured or certified clean-air delivery with unit and test condition","Useful throughput at tolerable noise","Observed particle clearing and room-size suitability","Filter availability, sealing and maintenance","Sensors, controls, app behaviour and sleep use"]},"products":[{"product_id":"prd-air-purifier-114123","product_name":"Airmega 450","slug":"coway-114123","brand":"Coway","model":"114123","image":{"url":"https://coway.co.uk/cdn/shop/files/450Productmain.webp?v=1782223890&width=2000","source_url":"https://coway.co.uk/products/airmega-450","alt":"Coway Airmega 450 product image","credit":"Coway UK product page","checked_at":"2026-07-29T17:17:15.937Z","rights_status":"source_hosted_manufacturer"},"quality_status":"quality_ordered","quality_position_label":"#1","position_range":{"low":1,"high":1},"tier":"Highest raw-throughput group","confidence":"moderate","best_for":["Large rooms needing maximum certified airflow","Users prioritising rapid high-speed cleaning"],"rationale":"Certified smoke, dust and pollen throughput is the strongest in this exact large-room cohort, and a second controlled group supports effective particle removal. It takes first place, while the lack of comparable quiet-mode throughput keeps the confidence appropriately qualified.","strengths":["Highest certified raw clean-air delivery in the cohort","Strong large-room particle-removal case","Independent certification and controlled review coverage","Substantial filter area"],"limitations":["Comparable quiet-mode throughput is missing","Large physical footprint","Detailed Consumer Reports results may require subscriber access"],"sense_check":"A defensible maximum-throughput leader, but the evidence cannot prove it is the best at a sleep-friendly noise level.","review_and_test_sources":[{"source_id":"ap-energy-airmega450","publisher":"ENERGY STAR","publisher_group":"US Environmental Protection Agency","title":"Coway Airmega 450 certified room air cleaner details","url":"https://www.energystar.gov/productfinder/product/certified-room-air-cleaners/details/4005919/export/pdf/download","source_kind":"certification_record","checked_at":"2026-07-30T20:39:46.000Z","test_context":"The certification record reports smoke, dust and pollen clean-air delivery under the ENERGY STAR room-air-cleaner method, with values around 443 to 450 cfm. It does not establish quiet-mode performance."},{"source_id":"ap-cr-airmega450","publisher":"Consumer Reports","publisher_group":"Consumer Reports","title":"Coway Airmega 450 air purifier review","url":"https://www.consumerreports.org/appliances/air-purifiers/coway-airmega-450/m417271/","source_kind":"controlled_test","checked_at":"2026-07-30T20:39:46.000Z","test_context":"Consumer Reports tested particle removal at multiple fan speeds alongside noise, controls and operating considerations for the exact model. Detailed scores may require subscriber access."}],"lowest_checked_offer":{"status":"stale","retailer":"Coway UK","price_gbp":null,"availability":null,"checked_at":"2026-07-29T17:17:15.937Z","freshness":{"status":"stale","checked_at":"2026-07-29T17:17:15.937Z","fresh_until":"2026-07-31T17:17:15.937Z","freshness_threshold_hours":48,"usable_for_current_price":false,"usable_for_current_availability":false},"tracked_offer_count":1,"fresh_offer_count":0,"selection_basis":"most_recent_tracked_offer_no_fresh_price","scope":"tracked_retailers_not_whole_market","retailer_url":"https://agentreviewdata.com/go/coway-114123?from=api"},"links":{"html":"https://agentreviewdata.com/categories/air-purifiers#coway-114123","product":"https://agentreviewdata.com/products/coway-114123","offer":"https://agentreviewdata.com/go/coway-114123?from=api"}},{"product_id":"prd-air-purifier-112931","product_name":"Blue Signature™ Large Nordic Fog","slug":"blueair-112931","brand":"Blueair","model":"112931","image":{"url":"https://blueair.co.uk/cdn/shop/files/ePDA_and_YD_-_MAIN_Light_1c29c645-7330-4de1-957c-76f973ddffc4.jpg?v=1772799753&width=2000","source_url":"https://blueair.co.uk/products/blue-signature","alt":"Blue Signature Large Nordic Fog product image","credit":"Blueair UK product page","checked_at":"2026-07-29T17:17:15.937Z","rights_status":"source_hosted_manufacturer"},"quality_status":"quality_ordered","quality_position_label":"#2","position_range":{"low":2,"high":2},"tier":"Top balanced large-room group","confidence":"high","best_for":["Large living spaces","Users wanting high throughput with modern controls"],"rationale":"RTINGS measured near-leading maximum throughput and strong useful airflow at 45 dBA, while home use supports the controls and ownership experience. It overlaps the leading group without a fixed position.","strengths":["Very high measured maximum throughput","Strong clean-air delivery at a controlled quieter condition","Polished controls and app","Suitable for large rooms"],"limitations":["Large footprint","Filter and app ownership should be considered","Home room-clearance conditions differ from the controlled rig"],"sense_check":"A strong balance of high and quieter throughput, though aesthetic and app strengths are secondary to its measured cleaning.","review_and_test_sources":[{"source_id":"ap-rtings-signaturelarge","publisher":"RTINGS.com","publisher_group":"RTINGS.com","title":"Blueair Blue Signature Large review","url":"https://www.rtings.com/air-purifier/reviews/blueair/blue-signature-large","source_kind":"controlled_test","checked_at":"2026-07-30T20:39:46.000Z","test_context":"Standardised particle testing measured about 429 cfm at maximum and about 213 cfm while held to 45 dBA or less. Noise, power, filters, sensors, controls and app behaviour were also assessed."},{"source_id":"ap-techradar-signaturelarge","publisher":"TechRadar","publisher_group":"Future plc","title":"Blueair Blue Signature review","url":"https://www.techradar.com/home/air-quality/blueair-blue-signature-review","source_kind":"hands_on_review","checked_at":"2026-07-30T20:39:46.000Z","test_context":"The large Signature model was used in a real home and assessed for particle response, noise, design, controls, app experience, filter ownership and suitability for large rooms."}],"lowest_checked_offer":{"status":"stale","retailer":"Blueair UK","price_gbp":null,"availability":null,"checked_at":"2026-07-29T17:17:15.937Z","freshness":{"status":"stale","checked_at":"2026-07-29T17:17:15.937Z","fresh_until":"2026-07-31T17:17:15.937Z","freshness_threshold_hours":48,"usable_for_current_price":false,"usable_for_current_availability":false},"tracked_offer_count":1,"fresh_offer_count":0,"selection_basis":"most_recent_tracked_offer_no_fresh_price","scope":"tracked_retailers_not_whole_market","retailer_url":"https://agentreviewdata.com/go/blueair-112931?from=api"},"links":{"html":"https://agentreviewdata.com/categories/air-purifiers#blueair-112931","product":"https://agentreviewdata.com/products/blueair-112931","offer":"https://agentreviewdata.com/go/blueair-112931?from=api"}},{"product_id":"prd-air-purifier-110175","product_name":"Blue 211i Max","slug":"blueair-110175","brand":"Blueair","model":"110175","image":{"url":"https://blueair.co.uk/cdn/shop/files/1_20_1_1da64e55-37b6-4472-a455-a293a3eb2dea.png?v=1752071338&width=2035","source_url":"https://blueair.co.uk/products/blue-211i-max","alt":"Blue 211i Max product image","credit":"Blueair UK product page","checked_at":"2026-07-29T17:17:15.937Z","rights_status":"source_hosted_manufacturer"},"quality_status":"quality_ordered","quality_position_label":"#3","position_range":{"low":3,"high":3},"tier":"Top quiet-throughput group","confidence":"high","best_for":["Large rooms where noise matters","Sustained everyday operation"],"rationale":"Measured maximum throughput is close to the leaders and its roughly 224 cfm result at 45 dBA is the strongest quiet-condition figure in this cohort. It takes third place, with different filter, control and maximum-output priorities retained as caveats.","strengths":["Excellent measured clean-air delivery at 45 dBA","High maximum throughput","Good smart-home ownership evidence","Straightforward large-room operation"],"limitations":["Fabric pre-filter requires routine care","Large body","Smart features are not a substitute for measured cleaning"],"sense_check":"The strongest evidenced choice here for useful quiet throughput, without claiming universal superiority on every operating mode.","review_and_test_sources":[{"source_id":"ap-rtings-211imax","publisher":"RTINGS.com","publisher_group":"RTINGS.com","title":"Blueair Blue Pure 211i Max review","url":"https://www.rtings.com/air-purifier/reviews/blueair/blue-pure-211i-max","source_kind":"controlled_test","checked_at":"2026-07-30T20:39:46.000Z","test_context":"Standardised testing measured about 419 cfm at maximum and about 224 cfm at 45 dBA or less, along with particle removal, noise, energy, controls, sensors and filter assessment."},{"source_id":"ap-appleinsider-211imax","publisher":"AppleInsider","publisher_group":"AppleInsider","title":"Blue 211i Max air purifier review","url":"https://appleinsider.com/articles/25/02/25/blue-211i-max-air-purifier-review-an-increasingly-necessary-smart-home-accessory","source_kind":"hands_on_review","checked_at":"2026-07-30T20:39:46.000Z","test_context":"Extended smart-home use assessed air-quality response, noise, controls, app and HomeKit-adjacent ownership workflow, filter changes and large-room practicality."}],"lowest_checked_offer":{"status":"stale","retailer":"Blueair UK","price_gbp":null,"availability":null,"checked_at":"2026-07-29T17:17:15.937Z","freshness":{"status":"stale","checked_at":"2026-07-29T17:17:15.937Z","fresh_until":"2026-07-31T17:17:15.937Z","freshness_threshold_hours":48,"usable_for_current_price":false,"usable_for_current_availability":false},"tracked_offer_count":1,"fresh_offer_count":0,"selection_basis":"most_recent_tracked_offer_no_fresh_price","scope":"tracked_retailers_not_whole_market","retailer_url":"https://agentreviewdata.com/go/blueair-110175?from=api"},"links":{"html":"https://agentreviewdata.com/categories/air-purifiers#blueair-110175","product":"https://agentreviewdata.com/products/blueair-110175","offer":"https://agentreviewdata.com/go/blueair-110175?from=api"}},{"product_id":"prd-air-purifier-heapaplvsuk0113y","product_name":"Levoit Core 600S Smart Air Purifier","slug":"levoit-heapaplvsuk0113y","brand":"Levoit","model":"HEAPAPLVSUK0113Y","image":{"url":"https://levoit.co.uk/cdn/shop/files/B09BJMY8HL.MAIN.jpg?v=1769758060&width=1920","source_url":"https://levoit.co.uk/products/levoit-core-600s-smart-air-purifier","alt":"Levoit Core 600S Smart Air Purifier product image","credit":"Levoit UK product page","checked_at":"2026-07-29T17:17:15.937Z","rights_status":"source_hosted_manufacturer"},"quality_status":"quality_ordered","quality_position_label":"#4","position_range":{"low":4,"high":4},"tier":"Strong large-room group","confidence":"high","best_for":["Large-room cleaning with compact cylindrical packaging","Users wanting established app controls"],"rationale":"Two independent controlled groups support strong room clearing and roughly mid-300 cfm maximum throughput. Quiet-condition throughput is materially below the leading Blueair measurements, placing it in the next broad group.","strengths":["Strong maximum clean-air throughput","Fast particle clearing in independent room tests","Useful controls and app","Widely available replacement-filter format"],"limitations":["Quiet-condition throughput trails the leading large models","Cylindrical intake needs suitable placement","Test groups report in different units and conditions"],"sense_check":"A capable large-room purifier, but the evidence does not support its headline coverage claim outranking stronger measured quiet throughput.","review_and_test_sources":[{"source_id":"ap-rtings-core600s","publisher":"RTINGS.com","publisher_group":"RTINGS.com","title":"Levoit Core 600S review","url":"https://www.rtings.com/air-purifier/reviews/levoit/core-600s","source_kind":"controlled_test","checked_at":"2026-07-30T20:39:46.000Z","test_context":"Standardised testing measured clean-air throughput, including roughly 363 to 375 cfm at maximum and around 156 to 162 cfm in a quiet condition across available test groups. RTINGS also assessed noise, filters, sensors and controls."},{"source_id":"ap-housefresh-core600s","publisher":"HouseFresh","publisher_group":"HouseFresh","title":"Levoit Core 600S review","url":"https://housefresh.com/levoit-core-600s-review/","source_kind":"controlled_test","checked_at":"2026-07-30T20:39:46.000Z","test_context":"HouseFresh measured particle clearance in its test room, sound, power use and filter costs, and compared observed airflow behaviour with published specifications for the exact model."}],"lowest_checked_offer":{"status":"stale","retailer":"Levoit UK","price_gbp":null,"availability":null,"checked_at":"2026-07-29T17:17:15.937Z","freshness":{"status":"stale","checked_at":"2026-07-29T17:17:15.937Z","fresh_until":"2026-07-31T17:17:15.937Z","freshness_threshold_hours":48,"usable_for_current_price":false,"usable_for_current_availability":false},"tracked_offer_count":1,"fresh_offer_count":0,"selection_basis":"most_recent_tracked_offer_no_fresh_price","scope":"tracked_retailers_not_whole_market","retailer_url":"https://agentreviewdata.com/go/levoit-heapaplvsuk0113y?from=api"},"links":{"html":"https://agentreviewdata.com/categories/air-purifiers#levoit-heapaplvsuk0113y","product":"https://agentreviewdata.com/products/levoit-heapaplvsuk0113y","offer":"https://agentreviewdata.com/go/levoit-heapaplvsuk0113y?from=api"}},{"product_id":"prd-air-purifier-114114","product_name":"Airmega 350","slug":"coway-114114","brand":"Coway","model":"114114","image":{"url":"https://coway.co.uk/cdn/shop/files/UK350Productmain_a72152de-e85f-4793-abeb-0cca5e48c639.webp?v=1782223399&width=2000","source_url":"https://coway.co.uk/products/airmega-350","alt":"Coway Airmega 350 product image","credit":"Coway UK product page","checked_at":"2026-07-29T17:17:15.937Z","rights_status":"source_hosted_manufacturer"},"quality_status":"quality_ordered","quality_position_label":"#5","position_range":{"low":5,"high":5},"tier":"Strong large-room group","confidence":"high","best_for":["Large rooms where automatic controls matter","Users preferring a substantial dual-filter design"],"rationale":"Controlled room testing supports about 352 cfm at maximum and good overall particle removal, but only about 100 cfm in the published quiet condition. This conflicts with a stronger manufacturer-derived airflow impression and keeps it below the leading quiet-throughput group.","strengths":["Strong maximum room-cleaning performance","Independent certification and room-test coverage","Quiet subjective operation in home use","Useful automatic controls"],"limitations":["Measured quiet-condition throughput is modest for its size","Large footprint and dual-filter ownership","Stored manufacturer airflow should not replace independent measured context"],"sense_check":"A strong large-room purifier, but the independent quiet-throughput result does not support its previous spec-led first place.","review_and_test_sources":[{"source_id":"ap-housefresh-airmega350","publisher":"HouseFresh","publisher_group":"HouseFresh","title":"Coway Airmega 350 review","url":"https://housefresh.com/coway-airmega-350-review/","source_kind":"controlled_test","checked_at":"2026-07-30T20:39:46.000Z","test_context":"Independent room testing measured roughly 352 cfm at maximum and about 100 cfm in the chosen quiet condition, alongside particle-clearance time, noise, power and filter ownership."},{"source_id":"ap-energy-airmega350","publisher":"ENERGY STAR","publisher_group":"US Environmental Protection Agency","title":"Coway Airmega 350 certified room air cleaner details","url":"https://www.energystar.gov/productfinder/product/certified-room-air-cleaners/details/4005922/export/pdf/download","source_kind":"certification_record","checked_at":"2026-07-30T20:39:46.000Z","test_context":"The certification record provides smoke, dust and pollen CADR, energy and room-air-cleaner test details for the exact model. These certified values are retained separately from HouseFresh's room and noise tests."},{"source_id":"ap-techradar-airmega350","publisher":"TechRadar","publisher_group":"Future plc","title":"Coway Airmega 350 review","url":"https://www.techradar.com/home/air-quality/coway-airmega-350-review-a-quiet-powerful-air-purifier-that-will-earn-its-place-in-any-home","source_kind":"hands_on_review","checked_at":"2026-07-30T20:39:46.000Z","test_context":"Hands-on home use assessed particle response, noise across modes, controls, sensor behaviour, filter arrangement, physical size and everyday large-room ownership."}],"lowest_checked_offer":{"status":"stale","retailer":"Coway UK","price_gbp":null,"availability":null,"checked_at":"2026-07-29T17:17:15.937Z","freshness":{"status":"stale","checked_at":"2026-07-29T17:17:15.937Z","fresh_until":"2026-07-31T17:17:15.937Z","freshness_threshold_hours":48,"usable_for_current_price":false,"usable_for_current_availability":false},"tracked_offer_count":1,"fresh_offer_count":0,"selection_basis":"most_recent_tracked_offer_no_fresh_price","scope":"tracked_retailers_not_whole_market","retailer_url":"https://agentreviewdata.com/go/coway-114114?from=api"},"links":{"html":"https://agentreviewdata.com/categories/air-purifiers#coway-114114","product":"https://agentreviewdata.com/products/coway-114114","offer":"https://agentreviewdata.com/go/coway-114114?from=api"}}],"unreviewed_products":[{"product_id":"prd-air-purifier-114257","product_name":"Airmega Mighty Beige","slug":"coway-114257","model":"114257","status":"no_published_review_result","reason":"No exact-model review and test corpus has passed this category's publication gate.","links":{"product":"https://agentreviewdata.com/products/coway-114257"}},{"product_id":"prd-air-purifier-113861","product_name":"Blue Signature™ Medium Nordic Fog","slug":"blueair-113861","model":"113861","status":"no_published_review_result","reason":"No exact-model review and test corpus has passed this category's publication gate.","links":{"product":"https://agentreviewdata.com/products/blueair-113861"}},{"product_id":"prd-air-purifier-110088","product_name":"Blue Max 3450i","slug":"blueair-110088","model":"110088","status":"no_published_review_result","reason":"No exact-model review and test corpus has passed this category's publication gate.","links":{"product":"https://agentreviewdata.com/products/blueair-110088"}},{"product_id":"prd-air-purifier-110086","product_name":"Blue Max 3350i","slug":"blueair-110086","model":"110086","status":"no_published_review_result","reason":"No exact-model review and test corpus has passed this category's publication gate.","links":{"product":"https://agentreviewdata.com/products/blueair-110086"}},{"product_id":"prd-air-purifier-111582","product_name":"Blue 511i Max","slug":"blueair-111582","model":"111582","status":"no_published_review_result","reason":"No exact-model review and test corpus has passed this category's publication gate.","links":{"product":"https://agentreviewdata.com/products/blueair-111582"}},{"product_id":"prd-air-purifier-heapaplvsuk0193y","product_name":"Levoit Core 400S Smart Air Purifier","slug":"levoit-heapaplvsuk0193y","model":"HEAPAPLVSUK0193Y","status":"no_published_review_result","reason":"No exact-model review and test corpus has passed this category's publication gate.","links":{"product":"https://agentreviewdata.com/products/levoit-heapaplvsuk0193y"}},{"product_id":"prd-air-purifier-110344","product_name":"Blue Pure 511","slug":"blueair-110344","model":"110344","status":"no_published_review_result","reason":"No exact-model review and test corpus has passed this category's publication gate.","links":{"product":"https://agentreviewdata.com/products/blueair-110344"}},{"product_id":"prd-air-purifier-113147","product_name":"Airmega 150 Green","slug":"coway-113147","model":"113147","status":"no_published_review_result","reason":"No exact-model review and test corpus has passed this category's publication gate.","links":{"product":"https://agentreviewdata.com/products/coway-113147"}},{"product_id":"prd-air-purifier-4100818","product_name":"Airmega 100","slug":"coway-4100818","model":"4100818","status":"no_published_review_result","reason":"No exact-model review and test corpus has passed this category's publication gate.","links":{"product":"https://agentreviewdata.com/products/coway-4100818"}},{"product_id":"prd-air-purifier-heapaplvnuk0186y","product_name":"Levoit Core 300 Air Purifier","slug":"levoit-heapaplvnuk0186y","model":"HEAPAPLVNUK0186Y","status":"no_published_review_result","reason":"No exact-model review and test corpus has passed this category's publication gate.","links":{"product":"https://agentreviewdata.com/products/levoit-heapaplvnuk0186y"}},{"product_id":"prd-air-purifier-heapaplvsuk0163y","product_name":"Levoit Vital 100S Smart Air Purifier","slug":"levoit-heapaplvsuk0163y","model":"HEAPAPLVSUK0163Y","status":"no_published_review_result","reason":"No exact-model review and test corpus has passed this category's publication gate.","links":{"product":"https://agentreviewdata.com/products/levoit-heapaplvsuk0163y"}},{"product_id":"prd-air-purifier-110085","product_name":"Blue Max 3250i","slug":"blueair-110085","model":"110085","status":"no_published_review_result","reason":"No exact-model review and test corpus has passed this category's publication gate.","links":{"product":"https://agentreviewdata.com/products/blueair-110085"}},{"product_id":"prd-air-purifier-111762","product_name":"Classic Pro CP7i","slug":"blueair-111762","model":"111762","status":"no_published_review_result","reason":"No exact-model review and test corpus has passed this category's publication gate.","links":{"product":"https://agentreviewdata.com/products/blueair-111762"}},{"product_id":"prd-air-purifier-111524","product_name":"Blue Pure Mini Max","slug":"blueair-111524","model":"111524","status":"no_published_review_result","reason":"No exact-model review and test corpus has passed this category's publication gate.","links":{"product":"https://agentreviewdata.com/products/blueair-111524"}},{"product_id":"prd-air-purifier-heapaplvsuk0195y","product_name":"Levoit Vital Pet Pro Air Purifier for Homes with Pets","slug":"levoit-heapaplvsuk0195y","model":"HEAPAPLVSUK0195Y","status":"no_published_review_result","reason":"No exact-model review and test corpus has passed this category's publication gate.","links":{"product":"https://agentreviewdata.com/products/levoit-heapaplvsuk0195y"}}],"market_context_gaps":[{"name":"Winix, Philips and high-throughput specialist designs","segment":"Whole-market air cleaning","reason":"The tracked catalogue covers Coway, Blueair and Levoit. Current controlled reviewers also test Winix, Philips, Smart Air, AirFanta and do-it-yourself Corsi-Rosenthal designs that can change the best performance, noise and filter-cost choices.","evidence_urls":["https://housefresh.com/best-air-purifiers/","https://www.rtings.com/air-purifier/reviews/best/air-purifiers"]}],"limitations":["The order is a large-room cohort, not a comparison of all tracked purifier sizes.","CADR, measured airflow and room-clearance time are retained with their original units and conditions rather than averaged.","Airmega 450 lacks a comparable public quiet-throughput measurement.","Regional filter and motor variants are not assumed equivalent without exact evidence."],"links":{"html":"https://agentreviewdata.com/categories/air-purifiers","methodology":"https://agentreviewdata.com/methodology#review-led-all-categories","specification_comparison":"https://agentreviewdata.com/api/v1/compare?category=air-purifier"}}}