My Undersized Ducted Mini-Split Heat Pump
Last year my wife and I bought a 1961 ranch-style house, and I've been having a lot of fun fixing it up. I wrote about the problem with the spray foam in the attic not covering the top plates and…
filtration
Understanding Filter Ratings: MERV, FPR, and MPR
As much as I've written about filters and filtration in this blog, I have to confess there's one aspect of filter efficiency I've resisted learning about. Every article I've written that mentions filter efficiency talks about only one rating scale: …
Can Your HVAC System Filter Out Coronavirus?
Yesterday I gathered with a few of my friends and colleagues from the building performance community for a virtual happy hour. During our chat, Steve Byers of Energy Logic posed the question: Compared to BC (before coronavirus), how will you…
Can You Use HVAC Filters in Coronavirus Masks?
Back in 2018 I wrote a series of articles on indoor air quality and filtration. One of those articles, The Unintended Consequences of High-MERV Filters, has seen a flurry of activity in the comments over the past three weeks. It all…
![An Image From The First U.S. Case Of COVID-19, Formerly Known As 2019-nCoV. [Image From The CDC]](https://www.energyvanguard.com/wp-content/uploads/2020/03/coronavirus-banner-cdc.jpg)
A Coronavirus Roundup From Energy Vanguard
Well, there's nothing like a little pandemic to completely upend our daily lives as well as our short and long-term outlooks for the future. I've spent far too much time reading about, listening to, and watching news about the novel…