{"id":11386,"date":"2022-10-10T21:32:58","date_gmt":"2022-10-10T21:32:58","guid":{"rendered":"https:\/\/smartairfilters.com\/uk\/?p=11386"},"modified":"2022-10-11T10:01:42","modified_gmt":"2022-10-11T10:01:42","slug":"quiet-air-purifier","status":"publish","type":"post","link":"https:\/\/smartairfilters.com\/uk\/en\/quiet-air-purifier\/","title":{"rendered":"Blast in name, quiet in nature"},"content":{"rendered":"\n<p>We launched Smart Air with a DIY air purifier, designed to provide low-cost, affordable clean air at a time when companies were charging $'000s for air purifiers. <\/p>\n\n\n\n<p>When we built the original Blast and Blast Mini air purifiers, our priority was still costs but also the clean air delivery rate (CADR).<\/p>\n\n\n\n<p>By the time the Blast and Blast Mini MkII was released, it was clear that the third focus of noise was equally important. Here's why...<\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"833\" height=\"1024\" src=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/10\/20220209_181022165_iOS-833x1024.png\" alt=\"\" class=\"wp-image-11392 size-full\" srcset=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/10\/20220209_181022165_iOS-833x1024.png 833w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/10\/20220209_181022165_iOS-244x300.png 244w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/10\/20220209_181022165_iOS-768x944.png 768w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/10\/20220209_181022165_iOS-600x738.png 600w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/10\/20220209_181022165_iOS.png 1125w\" sizes=\"auto, (max-width: 833px) 100vw, 833px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>In November 2021, GPS commissioned a <a href=\"https:\/\/gpsair.com\/articles\/teachers-concerned-about-iaq-but-many-turning-down-or-off-in-room-air-purifiers\" target=\"_blank\" rel=\"noreferrer noopener\">National Teachers Survey<\/a> of 750 US teachers with air purifiers in their class. The results are astounding:<\/p>\n\n\n\n<ul class=\"wp-block-list\" id=\"block-524b2a64-61c2-4af7-8abe-3cd7c14a0c02\"><li>Nearly 70% of teachers turn off, or down, the HEPA filter due to noise.<\/li><li>40% teachers agree that noise from the HEPA filters make it harder to teach\/harder to learn<\/li><li>31% teachers indicate that students ask for the in-room air filter to be turned off or down either daily (11%) or weekly (20%)<\/li><li>67% of teachers indicate they most often have the HEPA filter set to a level below High (including off). Most purifiers are spec'd to run on maximum setting<\/li><\/ul>\n<\/div><\/div>\n\n\n\n<h4 class=\"gb-headline gb-headline-63a72fe6 gb-headline-text\">How would the Blast fare?<\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"293\" src=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/04\/quietest_purifier-1024x293.jpg\" alt=\"\" class=\"wp-image-10751\" srcset=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/04\/quietest_purifier-1024x293.jpg 1024w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/04\/quietest_purifier-300x86.jpg 300w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/04\/quietest_purifier-768x220.jpg 768w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/04\/quietest_purifier-1536x439.jpg 1536w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/04\/quietest_purifier-2048x586.jpg 2048w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/04\/quietest_purifier-600x172.jpg 600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>It's hard to overstate how critical noise is to the decision-making process. Few manufacturers prioritise low noise on the top setting, yet the marketing will focus how great the performance is at the highest levels.<\/p>\n\n\n\n<p>But it's not just schools. Even in hospitals with signs such as \"Do not turn down, this machine is providing you with clean air\", purifiers are turned down or off. <\/p>\n\n\n\n<h4 class=\"gb-headline gb-headline-7ac017ec gb-headline-text\">What level of noise is acceptable in most workplaces?<\/h4>\n\n\n\n<p>The maximum decibels you should aim for is 50dBA but ideally 40dBA in a classroom. While this difference may not seem much, an increase of 10 dB means the purifier is \u201cabout\u201d twice as loud for human ears or 10 times the power in electronic terms.&nbsp;In other words,&nbsp;<strong>an air purifier marked as 50 dB is double the loudness of a 40 dB air purifier<\/strong>!<\/p>\n\n\n\n<h4 class=\"gb-headline gb-headline-4861fd58 gb-headline-text\">How to work out the best purifier for your space<\/h4>\n\n\n\n<p>Work out the approximate volume of your room (length x width x height) and multiply this by the number of air changes per hour (ACH) you want in your space. <\/p>\n\n\n\n<p class=\"has-text-align-center\"><code>Let's assume you have a poorly ventilated 144m3 classroom providing just 1 ACH (natural ventilation) and you need 6 ACH <\/code><\/p>\n\n\n\n<p class=\"has-text-align-center\"><code>Your purifier needs to bring in 5 air changes an hour to meet your target<\/code><\/p>\n\n\n\n<p class=\"has-text-align-center\"><code>Multiplying 144 by 5 gives you a CADR of 720m3\/h - this is how much clean air your air purifier(s) needs to provide<\/code><\/p>\n\n\n\n<p>To make sure you size up the right purifier for your needs, work out how many purifiers can provide you with this CADR at a noise level of 40-45dBA.<\/p>\n\n\n\n<h4 class=\"gb-headline gb-headline-41d98201 gb-headline-text\">Related links<\/h4>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-cover is-light\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\"><\/span><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" class=\"wp-block-cover__image-background wp-image-11390\" alt=\"The Blast air purifier in schools and universities\" src=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/10\/Ph_Uni_Blasts-1024x1024.jpg\" data-object-fit=\"cover\" srcset=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/10\/Ph_Uni_Blasts-1024x1024.jpg 1024w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/10\/Ph_Uni_Blasts-300x300.jpg 300w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/10\/Ph_Uni_Blasts-150x150.jpg 150w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/10\/Ph_Uni_Blasts-768x768.jpg 768w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/10\/Ph_Uni_Blasts-600x600.jpg 600w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/10\/Ph_Uni_Blasts-100x100.jpg 100w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/10\/Ph_Uni_Blasts.jpg 1080w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-text-align-center has-base-3-color has-text-color\" style=\"font-size:30px\">Schools and universities<\/p>\n\n\n<div class=\"gb-button-wrapper gb-button-wrapper-d340bc64\">\n\n<a class=\"gb-button gb-button-6f271db8 gb-button-text\" href=\"https:\/\/smartairfilters.com\/uk\/commercial\/school-air-purifiers\/\">View page<\/a>\n\n<\/div><\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-cover is-light\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\"><\/span><img loading=\"lazy\" decoding=\"async\" width=\"184\" height=\"225\" class=\"wp-block-cover__image-background wp-image-11140\" alt=\"\" src=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/09\/Zomato-Blasts-300x225-1-e1662371614868.png\" data-object-fit=\"cover\" \/><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-text-align-center has-base-3-color has-text-color\" style=\"font-size:30px\">Smart Air in the workplace<\/p>\n\n\n<div class=\"gb-button-wrapper gb-button-wrapper-7db60d4f\">\n\n<a class=\"gb-button gb-button-d66583ca gb-button-text\" href=\"https:\/\/smartairfilters.com\/uk\/commercial\/case-studies\/\">View page<\/a>\n\n<\/div><\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-cover is-light\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\"><\/span><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" class=\"wp-block-cover__image-background wp-image-10719\" alt=\"\" src=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/04\/clinics.jpg\" data-object-fit=\"cover\" srcset=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/04\/clinics.jpg 800w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/04\/clinics-300x300.jpg 300w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/04\/clinics-150x150.jpg 150w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/04\/clinics-768x768.jpg 768w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/04\/clinics-600x600.jpg 600w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/04\/clinics-100x100.jpg 100w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-text-align-center has-base-3-color has-text-color\" style=\"font-size:30px\">5 reasons to choose Smart Air<\/p>\n\n\n<div class=\"gb-button-wrapper gb-button-wrapper-f626a6ed\">\n\n<a class=\"gb-button gb-button-62f815fa gb-button-text\" href=\"https:\/\/smartairfilters.com\/uk\/commercial\/5-reasons-to-choose-smart-air\/\">View page<\/a>\n\n<\/div><\/div><\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>We launched Smart Air with a DIY air purifier, designed to provide low-cost, affordable clean air at a time when companies were charging $'000s for air purifiers. When we built the original Blast and Blast Mini air purifiers, our priority was still costs but also the clean air delivery rate (CADR). By the time the ... <a title=\"Blast in name, quiet in nature\" class=\"read-more\" href=\"https:\/\/smartairfilters.com\/uk\/en\/quiet-air-purifier\/\" aria-label=\"Read more about Blast in name, quiet in nature\">Read more<\/a><\/p>\n","protected":false},"author":10355,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[90,91,92,80,79],"class_list":["post-11386","post","type-post","status-publish","format-standard","hentry","category-slider","tag-blast","tag-blast-mini","tag-businesses","tag-commercial","tag-schools"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Smart Air UK<\/title>\n<meta name=\"description\" content=\"Smart Air&#039;s commercial air purifiers, the Blast and Blast Mini, deliver exceptionally high amounts of clean air at low noise levels\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"Smart Air&#039;s commercial air purifiers, the Blast and Blast Mini, deliver exceptionally high amounts of clean air at low noise levels\" \/>\n<meta property=\"og:site_name\" content=\"Smart Air UK\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/smartairfilters\/\" \/>\n<meta property=\"article:published_time\" content=\"2022-10-10T21:32:58+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-10-11T10:01:42+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/sites\/16\/2022\/10\/20220209_181022165_iOS-833x1024.png\" \/>\n<meta name=\"author\" content=\"smartairuk\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" 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