{"pageUrl":"https://comparethespecs.com/zh/home-living/air-purifiers-climate/what-are-the-quietest-whole-house-air-purifiers-available","lastUpdated":"2026-09-13","totalProducts":2,"niche":"...","description":"What are the quietest whole house air purifiers available?","products":[{"brand":"Alen","model":"BreatheSmart 25i","price_gbp":132.21,"origin_country":null,"specs":{"noise_level":"20 to 40","filter_types":"Essential HEPA, Advanced HEPA with carbon, Ultimate HEPA with odor neutralizer","coverage_area":"400","energy_consumption":"0.8 to 20","air_changes_per_hour":"5","maximum_particle_size_capture":"0.1 micron"},"confidence_score":null,"sources":[{"label":"Alen","url":"https://alen.com/products/breathesmart-25i","currency":"USD","source_country":"US","price":179.0,"price_gbp":132.21,"scraped_at":"2026-09-08T18:04:04.499103"}],"summary":"The Alen BreatheSmart 25i is a compact, Wi-Fi-enabled air purifier designed for bedrooms, nurseries, home offices, and other small spaces up to 400 square feet. It offers HEPA-based filtration, optional carbon and odor-neutralizing filter choices, automatic air-quality sensing, and quiet operation from 20 to 40 dB.","ideal_for":"适合希望选择市面上最安静的全屋空气净化器之一的人群，因为其噪音水平仅为 20 至 40 dB，同时其 HEPA 过滤功能可捕获小至 0.1 micron 的颗粒物。"},{"brand":"Alen","model":"BreatheSmart FLEX","price_gbp":286.59,"origin_country":null,"specs":{"noise_level":"25-50","filter_types":"True HEPA H13 Pure, Fresh, and Odor filters","coverage_area":"700","energy_consumption":"0.8-50","air_changes_per_hour":"2","maximum_particle_size_capture":"0.1 micron"},"confidence_score":null,"sources":[{"label":"The Home Depot","url":"https://www.homedepot.com/p/Alen-BreatheSmart-FLEX-700-sq-ft-HEPA-Console-Air-Purifier-with-Pure-Filter-for-Allergens-Dust-and-Mold-in-Metallics-BreatheSmart-FLEX-Pure-Stainless/301816918","currency":"USD","source_country":"US","price":388.0,"price_gbp":286.59,"scraped_at":"2026-09-08T18:04:04.499103"}],"summary":"The Alen BreatheSmart FLEX covers rooms up to 700 square feet and uses True HEPA H13 filter options to capture airborne particles larger than 0.1 micron. Its WhisperMax pink-noise operation, compact design, and lifetime guarantee suit bedrooms, home offices, allergy sufferers, and other medium-sized living spaces.","ideal_for":"适合寻求安静全屋空气净化的人群，因为其运行噪音为 25-50 dB，采用舒缓的粉红噪声，并且每 30分钟 可净化 700 square feet 的空间。"}]}