#home

Under-sink RO for everything I drink and cook with, and minerals added back deliberately rather than filtered around.

Branch Basics for every surface and all the laundry, plus a non-toxic dish soap. The number of products is itself part of the exposure.

Filtered drinking water and an unfiltered shower solves the smaller of the two exposures. Chlorine you inhale in a hot shower never touches your tongue.

Most of the house runs on incandescent for circadian reasons. The few LEDs left are daytime-only — the point is what the light does to the evening, not what it costs to run.

The one product in a laundry room engineered to leave a residue behind on purpose — on the sheets you sleep in and the towels you dry your face with.

Airthings inside, IQAir and AirNow outside. Windows stay open until AQI crosses moderate — with extra caution when PM2.5 rather than PM10 is what's driving the number.

Continuous monitoring rather than a one-time test kit. The current reading is 1.3 pCi/L — well under the EPA action level, so no mitigation is warranted here.

A mold-resistant humidifier for the winter dry-air stretch. High desert winters pull indoor humidity well below comfortable, and the humidifier itself is the thing most likely to cause a problem.

The furnace fan run deliberately rather than only when it heats or cools, with a MERV 13 filter in the return. It is the one thing in the house that touches every cubic foot of air.

Open the house wide for 15+ minutes a day, every day, summer and winter, to flush stale air, drop CO2, and keep humidity below the line where mold starts. Measured before and after with an Airthings monitor.

Part 5.5 was about the practical side of physical environment design — what I have actually done in my own home and why it works. This post is about the biblica

The space you are in right now is either working for you or against you. Most people have never stopped to think about which one it is.

I used to wake up feeling like I’d been hit by a truck.