{"niche":"哪款空气净化器在300英镑以下性价比最高？","description":"Which air purifier offers the best value for money under £300?","products":[{"brand":"Clorox","model":"11030 Medium Room Air Purifier","price_gbp":null,"origin_country":null,"specs":{"cadr":"148, 154, 160","filter_types":"Pre-filter; True HEPA; Activated carbon","coverage_area":"225","maximum_noise_level":"30","filter_replacement_interval":"6-12 months"},"confidence_score":null,"sources":[{"label":"Newegg","url":"https://www.newegg.com/clorox-11030/p/N82E16896692006","currency":"USD","source_country":"US","price":null,"price_gbp":null,"scraped_at":"2026-06-11T15:04:23.529193"}],"summary":"Three-stage 360° filtration (pre-filter, True HEPA, activated carbon) with PM2.5 display and auto mode for medium rooms; Energy Star certified and includes a whisper-quiet 30 dB sleep setting. CADR ratings are 148 CFM (smoke), 154 CFM (dust), 160 CFM (pollen), making it suitable for regular household allergen and particulate reduction.","ideal_for":"在低于 £300 的预算内性价比高，适用于中等房间，因为它提供 True HEPA 过滤、CADR 约 150 CFM 和 225 sq. ft. 的推荐适用面积，同时具备 Energy Star 认证。"},{"brand":"Levoit","model":"Core 300-P","price_gbp":63.52,"origin_country":null,"specs":{"cadr":"Smoke: 126 CFM, Dust: 134 CFM, Pollen: 154 CFM","filter_types":"Pre-filter, HEPA, Activated carbon (pelleted)","coverage_area":"262","energy_consumption":"35.5","maximum_noise_level":"54.5","filter_replacement_interval":"6-8 months"},"confidence_score":null,"sources":[{"label":"HouseFresh (review with listed buy links)","url":"https://housefresh.com/levoit-core-300-review/","currency":"USD","source_country":"US","price":84.99,"price_gbp":63.52,"scraped_at":"2026-06-11T15:03:48.292890"}],"summary":"Compact tabletop air purifier with a 3-stage filter (pre-filter, HEPA-grade main filter, pelleted activated carbon) and VortexAir/QuietKEAP technologies; strong CADR for smoke, dust and pollen and suitable for medium rooms. Offers child lock, sleep mode and timer, making it easy to use in bedrooms, kitchens or small living areas.","ideal_for":"在 £300 以下性价比最佳，因为其提供较高 CADR（Smoke 126 CFM；Dust 134 CFM；Pollen 154 CFM），覆盖约 262 sq ft，且与其清洁性能相比前期成本较低。"},{"brand":"Winix","model":"Winix 5510 / A231","price_gbp":149.47,"origin_country":null,"specs":{"cadr":"AHAM PM2.5 CADR: 252-253 CFM (dust)","filter_types":"Pre-filter, True HEPA, Activated carbon, PlasmaWave","energy_consumption":"Up to 53.4","filter_replacement_interval":"12 months"},"confidence_score":null,"sources":[{"label":"Home Depot","url":"https://www.homedepot.com/p/Winix-5510-Air-Purifier-for-Large-Room-Up-to-1881-sq-ft-in-1-Hr-True-HEPA-High-Deodorization-Carbon-Filter-Black-1022-0233-00/336188467","currency":"USD","source_country":"US","price":199.99,"price_gbp":149.47,"scraped_at":"2026-06-11T15:04:01.940757"}],"summary":"The Winix 5510 is a large-room air purifier with a four-stage system (pre-filter, activated carbon, True HEPA and PlasmaWave) and smart app control; it targets high CADR performance for dust and particulate removal and includes filter-life indicators. The A231 is the compact variant sharing Winix filtration tech and suited for smaller rooms. Both suit users wanting strong particulate removal with app control and low maintenance (12-month filter interval).","ideal_for":"适合本问题，因为 5510 在 AHAM CADR 方面表现高（约 252-253 CFM），并且采用 12-month filter interval，能在典型 ~£300 预算内为大房间提供强效颗粒物清洁。"}]}