Time for a breath of fresh air — literally

Brandon D. Wilson
5 min readAug 4, 2023

A few weeks ago, I changed my AC filters. I don’t have wildfires or major smog where I live, but there’s a lot of dust in the desert.

AC filter comparison two months of use vs. a new one (MERV 13 for you filter nerds)

Before you make any assumptions, I change the filters every two months. I have a reminder set on the calendar so I don’t forget. But looking at the dirty filter made me wonder: if that’s what is getting caught, what’s getting through that I’m breathing in all day and all night?

In a previous newsletter, I wrote about some air-purifying devices I use in the bathroom, bedroom, and home office. These devices are filterless; they work by pumping negative ions into the air, which attach to particles making them heavy enough to fall out of the air. I also have a Molekule, which has been relegated to the spare bedroom. My chief complaint about using it in my bedroom is the dim light feature that lasts precisely eight hours, and it woke me up too early in the morning. I also went a couple of rounds with that company’s customer service. Let’s say I wanted to look at other options. Considering that I spend most of my time in my house, I want to ensure I breathe clean air.

I saw the Medi Air Purifier booth at the Biohacking Conference, but that one is a bit pricey. I’m always looking for the best bang for the buck. Coincidentally, Luke Storey posted a link about the AirDoctor Indoor Air Purifier in…