filtration Archives - Energy Vanguard https://www.energyvanguard.com/tag/filtration/ Building science knowledge, HVAC design, & fun Mon, 21 Oct 2024 21:57:03 +0000 en-US hourly 1 https://wordpress.org/?v=6.6.2 A Burnt Grilled Cheese and the Collapse of Indoor Air Quality https://www.energyvanguard.com/blog/a-burnt-grilled-cheese-and-the-collapse-of-indoor-air-quality/ https://www.energyvanguard.com/blog/a-burnt-grilled-cheese-and-the-collapse-of-indoor-air-quality/#view_comments Tue, 16 Jul 2024 17:06:50 +0000 https://www.energyvanguard.com/?p=9122 I burned a grilled cheese sandwich recently.  I tried to bury the evidence by throwing it in the trash and forgetting about it, but my dear, sweet wife fished it out.  “You need to tell the world about this,” she…

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]]> https://www.energyvanguard.com/blog/a-burnt-grilled-cheese-and-the-collapse-of-indoor-air-quality/feed/ 10 What Is PM2.5? https://www.energyvanguard.com/blog/what-is-pm2-5/ https://www.energyvanguard.com/blog/what-is-pm2-5/#view_comments Thu, 04 Apr 2024 16:12:47 +0000 https://www.energyvanguard.com/?p=8948 You can’t see them.  You can’t smell a lot of them.  In fact, they’re hard to access with any of your senses.  But that doesn’t mean your body won’t respond to those tiny airborne particles that make up what scientists…

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]]> https://www.energyvanguard.com/blog/what-is-pm2-5/feed/ 6 A Vivid Look at the Effects of Air Pollution https://www.energyvanguard.com/blog/a-vivid-look-at-the-effects-of-air-pollution/ https://www.energyvanguard.com/blog/a-vivid-look-at-the-effects-of-air-pollution/#view_comments Thu, 04 Jan 2024 15:59:56 +0000 https://www.energyvanguard.com/?p=8745 This week I saw a photo that will haunt me for the rest of my life.  It’s one thing to know something.  It’s another to see it.  I’ve been writing about indoor air quality and the health effects of indoor…

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]]> https://www.energyvanguard.com/blog/a-vivid-look-at-the-effects-of-air-pollution/feed/ 17 Ionizer Company Sues Indoor Air Quality Expert https://www.energyvanguard.com/blog/ionizer-company-sues-indoor-air-quality-expert/ https://www.energyvanguard.com/blog/ionizer-company-sues-indoor-air-quality-expert/#view_comments Tue, 04 Oct 2022 21:54:27 +0000 https://www.energyvanguard.com/?p=7801 Since the beginning of the pandemic in 2020, indoor air quality has become a subject of great concern.  IAQ and infectious disease scientists discovered early on that COVID is airborne.  That means removing virus-laden particles from the air or deactivating…

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]]> https://www.energyvanguard.com/blog/ionizer-company-sues-indoor-air-quality-expert/feed/ 30 The What, Why, and How of the Corsi-Rosenthal Box https://www.energyvanguard.com/blog/the-what-why-and-how-of-the-corsi-rosenthal-box/ Thu, 29 Sep 2022 12:30:24 +0000 https://www.energyvanguard.com/?p=7794 The Westford Symposium on Building Science (known mostly as Building Science Summer Camp) came back to life this year after a two-year pandemic-prompted hiatus.  Three of the presentations on the first day focused on health, indoor air quality, and infection…

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]]> A Layered Approach to Indoor Air Quality https://www.energyvanguard.com/blog/a-layered-approach-to-indoor-air-quality/ https://www.energyvanguard.com/blog/a-layered-approach-to-indoor-air-quality/#view_comments Tue, 06 Sep 2022 16:32:51 +0000 https://www.energyvanguard.com/?p=7740 The past 2.5 years of the COVID pandemic have put a big spotlight on indoor air quality and the spread of infectious disease.  I’ve been writing about various aspects of indoor air quality since I started this blog in 2010,…

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]]> https://www.energyvanguard.com/blog/a-layered-approach-to-indoor-air-quality/feed/ 9 The Advantages of Filter Grilles for Your HVAC System https://www.energyvanguard.com/blog/the-advantages-of-filter-grilles-for-your-hvac-system/ https://www.energyvanguard.com/blog/the-advantages-of-filter-grilles-for-your-hvac-system/#view_comments Tue, 26 Apr 2022 14:55:37 +0000 https://www.energyvanguard.com/?p=7383 Oh, the controversies of duct design.  Standard versus high-efficiency filters.  Radial versus trunk and branch.  Central versus dedicated return vents.  Flex versus sheet metal ducts.  But there’s another duct debate that centers around the location of the filter.  In our…

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]]> https://www.energyvanguard.com/blog/the-advantages-of-filter-grilles-for-your-hvac-system/feed/ 23 The Big Picture of Indoor Air Quality – Excerpt https://www.energyvanguard.com/blog/the-big-picture-of-indoor-air-quality-excerpt/ https://www.energyvanguard.com/blog/the-big-picture-of-indoor-air-quality-excerpt/#view_comments Thu, 21 Apr 2022 14:57:57 +0000 https://www.energyvanguard.com/?p=7378 The quote below is a classic from the 1893 book, Ventilation and Heating, by John Shaw Billings.  The imagery of wearing someone else’s dirty underwear may shock you, but Billings makes a compelling point.  We essentially do something worse whenever…

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]]> https://www.energyvanguard.com/blog/the-big-picture-of-indoor-air-quality-excerpt/feed/ 6 DIY Box Fan Air Cleaner Update https://www.energyvanguard.com/blog/diy-box-fan-air-cleaner-update/ https://www.energyvanguard.com/blog/diy-box-fan-air-cleaner-update/#view_comments Mon, 03 Jan 2022 14:53:17 +0000 https://www.energyvanguard.com/?p=7011 The DIY box fan air cleaner known as the Corsi-Rosenthal Box (or the Comparetto Cube, in a slight variation) has really taken off in the fight against COVID.  I wrote about it here in September 2020, with instructions on how…

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]]> https://www.energyvanguard.com/blog/diy-box-fan-air-cleaner-update/feed/ 36 How to Ventilate a Home With Impunity https://www.energyvanguard.com/blog/how-to-ventilate-a-home-with-impunity/ https://www.energyvanguard.com/blog/how-to-ventilate-a-home-with-impunity/#view_comments Tue, 11 May 2021 15:46:12 +0000 https://energyvanguard.com/?p=5280 You know that old saying, “No good deed goes unpunished”?  It applies to a lot of homes with respect to ventilation.  If you simply bring outdoor air into the house, you pay for it…in more than one way.  The outdoor…

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