{"niche":"哪些安静的 HEPA 空气净化器适合放在卧室使用？","description":"What are the quietest hepa air purifiers suitable for bedrooms?","products":[{"brand":"Coway","model":"Airmega 100","price_gbp":62.92,"origin_country":null,"specs":{"filter_type":"3-in-1 (Pre-filter + HEPA + Deodorization)","noise_level_db":"20 ~ 48","coverage_area_sqft":"810","energy_consumption_watts":"25","filter_replacement_interval":"12 months","clean_air_delivery_rate_cadr":"Smoke 108, Dust 124, Pollen 112","maximum_particle_size_capture":"0.01 microns"},"confidence_score":null,"summary":"Compact cylindrical purifier with 3-stage filtration (pre-filter, HEPA, deodorization), real-time PM2.5 sensor, and quiet sleep mode. Suited for small to medium rooms and users who want low running costs and year‑long filter life.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"Coway official store","url":"https://cowaymega.com/products/airmega-100","currency":"USD","source_country":"US","price":129.99,"price_gbp":97.39,"scraped_at":"2026-06-08T20:54:01.475965"},{"label":"NBC Select (deal listing referencing Amazon/Walmart)","url":"https://www.nbcnews.com/select/shopping/coway-airmega-100-deal-of-the-day-2026-rcna343684","currency":"USD","source_country":"US","price":83.99,"price_gbp":62.92,"scraped_at":"2026-06-08T20:54:04.457445"}]},{"brand":"Honeywell","model":"HPA250B","price_gbp":172.31,"origin_country":null,"specs":{"filter_type":"Activated carbon pre-filter + True HEPA R filter","noise_level_db":null,"coverage_area_sqft":"310","energy_consumption_watts":"87","filter_replacement_interval":"HEPA filter: 12 months; Pre-filter: 3 months","clean_air_delivery_rate_cadr":"Dust: 190 / Smoke: 200 / Pollen: 180","maximum_particle_size_capture":"0.3 microns and larger"},"confidence_score":null,"summary":"Bluetooth-enabled large-room air purifier with activated carbon pre-filter plus True HEPA filtration, AHAM-verified CADR ratings and app control. Suited for allergy sufferers and households needing strong particle and odor removal in rooms up to about 310 sq ft.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"HoneywellStore","url":"https://www.honeywellstore.com/store/products/honeywell-blue-tooth-air-purifier-hpa-250b.htm","currency":"USD","source_country":"US","price":229.99,"price_gbp":172.31,"scraped_at":"2026-06-08T20:54:33.136478"},{"label":"BestBuy","url":"https://www.bestbuy.com/site/honeywell-hpa250b-bluetooth-smart-hepa-air-purifier-large-room-310-sq-ft-black/2794011.html","currency":"USD","source_country":"US","price":249.99,"price_gbp":187.29,"scraped_at":"2026-06-08T20:54:36.060961"}]},{"brand":"Coway","model":"Airmega AP-1512HH Mighty","price_gbp":179.8,"origin_country":null,"specs":{"filter_type":"Pre-Filter, Deodorization (Activated Carbon), HEPA, Bipolar Ionizer","noise_level_db":"24 ~ 53","coverage_area_sqft":"361","energy_consumption_watts":"77","filter_replacement_interval":"Deodorization Filter 6 months, HEPA Filter 12 months","clean_air_delivery_rate_cadr":"233 (Smoke), 246 (Dust), 240 (Pollen)","maximum_particle_size_capture":"0.3 microns"},"confidence_score":null,"summary":"Compact, award-winning air purifier with multi-stage filtration (pre-filter, activated carbon, True HEPA) and a bipolar ionizer. Suited for bedrooms and medium rooms up to ~361 sq ft where strong particulate removal is needed.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"Cowaymega","url":"https://cowaymega.com/products/mighty-ap-1512hh","currency":"USD","source_country":"US","price":239.99,"price_gbp":179.8,"scraped_at":"2026-06-08T20:54:47.329710"}]},{"brand":"Levoit","model":"Core 300S","price_gbp":112.37,"origin_country":null,"specs":{"filter_type":"3-stage (Pre-filter, True HEPA, Activated carbon)","noise_level_db":"22 - 50","coverage_area_sqft":"219","energy_consumption_watts":"21.8","filter_replacement_interval":"6-8 months","clean_air_delivery_rate_cadr":"Dust 134 / Smoke 126 / Pollen 154 CFM","maximum_particle_size_capture":"0.3 microns"},"confidence_score":null,"summary":"The Levoit Core 300S is a compact smart air purifier with 3-stage filtration (pre-filter, True HEPA, activated carbon), a PM2.5 sensor and Wi‑Fi/auto mode. It suits bedrooms or medium rooms up to about 219 sq ft for users who want quiet, energy-efficient smart control.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"Levoit","url":"https://levoit.com/products/core-300s-p-smart-air-purifier","currency":"USD","source_country":"US","price":149.99,"price_gbp":112.37,"scraped_at":"2026-06-08T20:53:47.310506"},{"label":"The Home Depot","url":"https://www.homedepot.com/p/LEVOIT-PlasmaPro-300s-P-Coverage-219-sq-ft-Activated-Carbon-Original-Filter-Small-Room-Smart-Air-Purifier-in-White-HEAPAPLVSUS0115Y/322228051","currency":"USD","source_country":"US","price":179.99,"price_gbp":134.85,"scraped_at":"2026-06-08T20:53:50.169573"}]},{"brand":"Winix","model":"5500-2","price_gbp":149.83,"origin_country":null,"specs":{"filter_type":"Washable pre-filter; Washable AOC carbon pellet filter; True HEPA (H13)","noise_level_db":"38.8-58.9 dB","coverage_area_sqft":"360","energy_consumption_watts":"0.34 (standby); 6.5-53.46 (operating)","filter_replacement_interval":"12 months","clean_air_delivery_rate_cadr":"Dust 243 CFM; Smoke 232 CFM; Pollen 246 CFM","maximum_particle_size_capture":"0.003 microns"},"confidence_score":null,"summary":"The Winix 5500-2 is a 4-stage air purifier with a washable pre-filter, pelleted activated carbon filter and True HEPA (H13) plus PlasmaWave technology. It suits medium to large rooms (about 360 sq ft), offers AHAM-verified high CADR for dust, smoke and pollen, and is aimed at allergy sufferers and homes with pets or smoke concerns.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"The Home Depot","url":"https://www.homedepot.com/p/Winix-5500-2-Air-Purifier-with-PlasmaWave-Technology-116102/206997034","currency":"USD","source_country":"US","price":199.99,"price_gbp":149.83,"scraped_at":"2026-06-08T20:54:15.816588"},{"label":"Winix America","url":"https://www.winixamerica.com/product-spotlight-the-5500-2-air-purifier-by-winix/","currency":"USD","source_country":"US","price":null,"price_gbp":null,"scraped_at":"2026-06-08T20:54:18.802383"},{"label":"HouseFresh (product review listing with specs)","url":"https://housefresh.com/winix-5500-2-review/","currency":"USD","source_country":"US","price":null,"price_gbp":null,"scraped_at":"2026-06-08T20:54:21.722466"}]}]}