filters Archives - Energy Vanguard https://www.energyvanguard.com/tag/filters/ Building science knowledge, HVAC design, & fun Thu, 29 Sep 2022 12:32:04 +0000 en-US hourly 1 https://wordpress.org/?v=6.6.2 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…

The post The What, Why, and How of the Corsi-Rosenthal Box appeared first on Energy Vanguard.

]]> 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…

The post DIY Box Fan Air Cleaner Update appeared first on Energy Vanguard.

]]> https://www.energyvanguard.com/blog/diy-box-fan-air-cleaner-update/feed/ 36 How to Make a Good High-MERV Filter Even Better https://www.energyvanguard.com/blog/how-to-make-good-high-merv-filter-better/ https://www.energyvanguard.com/blog/how-to-make-good-high-merv-filter-better/#view_comments Mon, 21 Sep 2020 22:43:48 +0000 http://energyvanguard.flywheelsites.com/?blog_post=how-to-make-a-good-high-merv-filter-even-better I hate it when I don’t see ahead of time what seems obvious afterward.  I’ve assembled a lot of things in my life, including a house and two VW engines, and I can’t tell you how many times I’ve gotten…

The post How to Make a Good High-MERV Filter Even Better appeared first on Energy Vanguard.

]]> https://www.energyvanguard.com/blog/how-to-make-good-high-merv-filter-better/feed/ 24 My Duct Systems on Low-Static Mini-Split Air Handlers https://www.energyvanguard.com/blog/my-duct-systems-low-static-mini-split-air-handlers/ https://www.energyvanguard.com/blog/my-duct-systems-low-static-mini-split-air-handlers/#view_comments Wed, 24 Jun 2020 20:02:27 +0000 http://energyvanguard.flywheelsites.com/?blog_post=my-duct-systems-on-low-static-mini-split-air-handlers I’ve written about the load calculation and equipment selection process I went through for the new Mitsubishi* ducted mini-split heat pump in my house.  Now let’s take a look at the design and performance of the duct systems for the…

The post My Duct Systems on Low-Static Mini-Split Air Handlers appeared first on Energy Vanguard.

]]> https://www.energyvanguard.com/blog/my-duct-systems-low-static-mini-split-air-handlers/feed/ 20 How Often Should You Change the HVAC Filter? https://www.energyvanguard.com/blog/how-often-should-you-change-hvac-filter/ https://www.energyvanguard.com/blog/how-often-should-you-change-hvac-filter/#view_comments Mon, 20 May 2019 13:36:57 +0000 http://energyvanguard.flywheelsites.com/?blog_post=how-often-should-you-change-the-hvac-filter One of the topics I’ve hammered on for years is the inadequacy of using rules of thumb for sizing air conditioners.  The standard one ton of air conditioning capacity for each 400 to 600 square feet of conditioned floor area…

The post How Often Should You Change the HVAC Filter? appeared first on Energy Vanguard.

]]> https://www.energyvanguard.com/blog/how-often-should-you-change-hvac-filter/feed/ 6 The Path to Low Pressure Drop Across a High-MERV Filter https://www.energyvanguard.com/blog/path-low-pressure-drop-across-high-merv-filter/ https://www.energyvanguard.com/blog/path-low-pressure-drop-across-high-merv-filter/#view_comments Mon, 22 Apr 2019 14:20:38 +0000 http://energyvanguard.flywheelsites.com/?blog_post=the-path-to-low-pressure-drop-across-a-high-merv-filter Last August I began a series of articles on filtration and indoor air quality.  You can find the list of them at the bottom of this article but let’s do a quick review here:  We spend a lot of our…

The post The Path to Low Pressure Drop Across a High-MERV Filter appeared first on Energy Vanguard.

]]> https://www.energyvanguard.com/blog/path-low-pressure-drop-across-high-merv-filter/feed/ 86 Do High-MERV Filters Always Reduce Air Flow? https://www.energyvanguard.com/blog/do-high-merv-filters-always-reduce-air-flow/ https://www.energyvanguard.com/blog/do-high-merv-filters-always-reduce-air-flow/#view_comments Wed, 16 Jan 2019 07:00:10 +0000 http://energyvanguard.flywheelsites.com/?blog_post=do-high-merv-filters-always-reduce-air-flow Over the past few months, I’ve taken a look at some critical issues for indoor air quality.  Starting with the issue of how much time we spend indoors, I then wrote about kitchen ventilation, the panoply of indoor air pollutants,…

The post Do High-MERV Filters Always Reduce Air Flow? appeared first on Energy Vanguard.

]]> https://www.energyvanguard.com/blog/do-high-merv-filters-always-reduce-air-flow/feed/ 29