The indoor air in your home can be 2–5× more polluted than outside — and most of it comes from sources you'd never suspect. We translate building science from Stanford, EPA, NREL, and Lawrence Berkeley Lab into guidance you can actually act on. No brand affiliations. No HVAC company money. Just field research and straight talk.
Your gas stove is an unvented chemical plant. Your furniture off-gasses formaldehyde for two years. Your ducts are pulling attic air into your living room. The research is alarming. The fixes are not. Stanford, EPA, NREL field data — distilled into one free guide.
MERV 13 filtration. Humidity control. ERV fresh air. Proper exhaust. These four upgrades — grounded in ASHRAE 62.2 and field research from Joseph Lstiburek — are what building scientists actually do in their own homes.
The same $800 repair is $3,200 at the next company — for identical parts and labor. 40 copy-paste AI prompts to audit quotes, verify diagnoses, build maintenance calendars, and handle emergencies without panic or overpaying.
If you can smell your bathroom, you're eating it. This is the law of olfaction — you cannot detect a smell without molecules from that thing physically entering your nose. The exact micron filtration that stops it. Funny. True. Genuinely useful.
"The HVAC industry runs on homeowner ignorance. We believe that building science belongs to everyone — not just the contractor standing in your equipment room with a clipboard and an upsell."