{"niche":"What are the most energy-efficient hepa air purifiers available?","description":"What are the most energy-efficient hepa air purifiers available?","products":[{"brand":"AirDoctor","model":"4000","price_gbp":507.35,"origin_country":null,"specs":{"filter_type":"Pre-filter, UltraHEPA, Premium Carbon/VOC","noise_level_db":null,"coverage_area_sqft":"694","energy_consumption_watts":null,"filter_replacement_interval":"6-12 months","clean_air_delivery_rate_cadr":"370","maximum_particle_size_capture":"0.003 microns"},"confidence_score":null,"summary":"The AirDoctor 4000 is a high-performance air purifier for large to extra-large rooms, using a 3-stage system (Pre-filter, UltraHEPA, Premium Carbon/VOC) to capture ultrafine particles down to 0.003 microns. It suits users who need strong particle and gas/VOC removal for living rooms, bedrooms, or open-plan spaces.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"AirDoctor Official Store","url":"https://airdoctorpro.com/products/airdoctor-4000","currency":"USD","source_country":"US","price":679.0,"price_gbp":507.35,"scraped_at":"2026-06-06T21:05:21.442026"},{"label":"Consumer Reports (retailer listing)","url":"https://www.consumerreports.org/appliances/air-purifiers/airdoctor-4000/m420133/","currency":"USD","source_country":"US","price":799.0,"price_gbp":597.01,"scraped_at":"2026-06-06T21:05:24.459269"}]},{"brand":"Winix","model":"5510/5500-2 (D360) True HEPA 3-Stage","price_gbp":149.43,"origin_country":null,"specs":{"filter_type":"True HEPA; activated carbon; pre-filter","noise_level_db":"23.5 - 67.2","coverage_area_sqft":"392","energy_consumption_watts":"0.65 - 53.84","filter_replacement_interval":"12 months","clean_air_delivery_rate_cadr":"252 / 247 / 253","maximum_particle_size_capture":"0.01 microns"},"confidence_score":null,"summary":"Mid-size Winix units with True HEPA, pellet-based carbon and pre-filter deliver strong CADR and AHAM-verified coverage for rooms around 392 sq ft; models include PlasmaWave and smart/WiFi features. Suited for households wanting high particle and odor removal with app control and moderate energy use.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"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":149.43,"scraped_at":"2026-06-06T21:05:50.145746"},{"label":"Winix USA","url":"https://www.winixamerica.com/product/5510/","currency":"USD","source_country":"US","price":259.99,"price_gbp":194.27,"scraped_at":"2026-06-06T21:05:53.162796"}]},{"brand":"Blueair","model":"Blue Pure 311i Max","price_gbp":171.85,"origin_country":null,"specs":{"filter_type":"HEPASilent (mechanical + electrostatic) with activated carbon","noise_level_db":"23-50","coverage_area_sqft":"439","energy_consumption_watts":"0.4-27.6","filter_replacement_interval":"6-9 months","clean_air_delivery_rate_cadr":"250","maximum_particle_size_capture":"0.1 microns"},"confidence_score":null,"summary":"Compact smart air purifier using HEPASilent dual filtration (particle + activated carbon) for high CADR and low energy use. Suited for medium to large rooms and users who want quiet, app-connected air cleaning with filter-life tracking.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"Blueair","url":"https://www.blueair.com/products/blue-pure-311i-max","currency":"USD","source_country":"US","price":229.99,"price_gbp":171.85,"scraped_at":"2026-06-06T21:05:35.736746"},{"label":"BestBuy","url":"https://www.bestbuy.com/product/blueair-blue-pure-311i-max-1800-sq-ft-smart-hepasilent-air-purifier-white-seabed/JX95HCYQ9L/sku/6553253","currency":"USD","source_country":"US","price":229.99,"price_gbp":171.85,"scraped_at":"2026-06-06T21:05:38.719383"}]},{"brand":"Clorox","model":"Medium Room Air Purifier 11030","price_gbp":104.57,"origin_country":null,"specs":{"filter_type":"Pre-filter, True HEPA, Active carbon","noise_level_db":"30","coverage_area_sqft":"225","energy_consumption_watts":null,"filter_replacement_interval":"6-12 months","clean_air_delivery_rate_cadr":"Smoke 148 CFM, Dust 154 CFM, Pollen 160 CFM","maximum_particle_size_capture":"0.3 microns"},"confidence_score":null,"summary":"True HEPA 3-stage 360° filtration captures 99.97% of particles as small as 0.3 microns and reduces odors with an active carbon layer. It includes PM2.5 display, auto mode, timer, and a whisper-quiet setting (as low as 30 dB), suited for medium rooms and users wanting straightforward, sensor-driven air cleaning.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"Clorox Home Appliances","url":"https://cloroxhomeappliances.com/products/clorox-medium-room-true-hepa-air-purifier-11030","currency":"USD","source_country":"US","price":139.99,"price_gbp":104.6,"scraped_at":"2026-06-06T21:06:04.517233"},{"label":"The Home Depot","url":"https://www.homedepot.com/p/Clorox-Medium-Room-Air-Purifier-11030J/320230319","currency":"USD","source_country":"US","price":139.95,"price_gbp":104.57,"scraped_at":"2026-06-06T21:06:07.321088"},{"label":"Best Buy","url":"https://www.bestbuy.com/product/clorox-true-hepa-medium-room-air-purifier-white/J78R3QFJ9L","currency":"USD","source_country":"US","price":null,"price_gbp":null,"scraped_at":"2026-06-06T21:06:10.126851"}]}]}