The pandemic has brought a huge amount of attention to indoor air quality, even without full acceptance of the aerosol transmission of COVID-19. Unfortunately, it has also brought a huge amount of money to companies selling questionable electronic "air cleaners." …
You may not want to think about this but every time you inhale, you're breathing in air that came out of someone else's lungs. One of my favorite ventilation quotes drives this point home. In a book titled Ventilation and…
The two kinds of people in the world are those who can extrapolate from incomplete data. Regarding how COVID-19 spreads, the data are becoming more and more complete now. And the facts and analysis all point to this deadly virus…
In case you hadn't heard, we had an inauguration for a new President of the United States this week. And Vermont Senator Bernie Sanders made one of the biggest sartorial splashes. Photographer Brendan Smialowski got a photo of Bernie sitting in a…
We are now ten short days from the winter solstice and many of us in the Northern Hemisphere have been in heating season for a while. That means there's a lot more combustion happening in homes than there was in…
Let's talk about one of my favorite subjects: air. Because of the global COVID-19 pandemic and the novel coronavirus (SARS-COV-2) that spreads it, the indoor air quality (IAQ) community—researchers, mediators, manufacturers, bloggers, groupies—is having a moment. This must be the…
Twitter is an utter hellscape in some ways, but it does have a few redeeming qualities. I've seen a lot of good information about the COVID-19 pandemic there, including ways to filter the indoor air for coronavirus and the emerging…
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…
I briefly worked at a dry cleaning shop in St. Louis a long time ago. It was December, and we had a bout of super cold weather one week. The temperature dropped to 0° F at night and got up…
Back in the summer of 2005, I got a call to figure out a moisture problem in a new house. The homeowners took me into the master suite, where the first thing to catch my eye was the towel folded…