Find What Is in Your Air, Room by Room, Then Fix It in the Right Order
Most indoor air problems have a source you can find: a range hood that does not vent, a candle, a damp basement, a bedroom door kept shut. This e-book walks the house with six room sheets that score themselves, sizes a purifier for three rooms and the fresh air for your house, gives source-first fixes for particles, mold, chemicals, carbon monoxide and radon, and sets up a clean room before smoke season. Delivered instantly as a 36-page fillable PDF e-book, with a free bonus: an online edition of the same e-book for any phone or computer.
You are purchasing Healthy Home Air Quality Audit — a downloadable digital publication (36-page fillable PDF e-book, with free bonus access to an online edition of the same e-book). Upon checkout, you will receive instant online access and an immediate download link sent to your email address. This is a 100% digital product. No physical books, binders, jars, or equipment will be shipped to your address.
See the Actual Pages
These are real pages from the 36-page e-book (the free online edition has the same content). Tap any page to see it full size.
Why Most Advice Leaves You More Confused
What’s Inside the Complete System
Every section is authored to provide concrete, fillable tools rather than theoretical filler.
What Is in the Air
Five numbers that matter, ten pollutants with their home sources and fixes, WHO 2021 and EPA targets, the 2024 AQI bands with an indoor-to-outdoor ratio calculator, and which instruments to buy and where to put them.
Six Room Sheets That Score Themselves
Kitchen, bedrooms, living areas, bathrooms and laundry, basement, garage and attic, offices and children's rooms. Red lines count 3, amber 2, gray 1; each sheet totals its score, and the summary ranks the rooms and adds the house.
Source-First Fixes
Particles, moisture and mold (with the EPA 10 square foot rule), dust mites, VOCs and fragrance, combustion and carbon monoxide by appliance, a radon converter against EPA levels, and a testing table for radon, lead, asbestos and more.
Filtration and Fresh Air
The MERV ladder, eight purifier rules, a sizing worksheet for three rooms (the AHAM two-thirds rule and 5 air changes an hour), the ASHRAE 62.2 fresh-air rate for your house, and humidity equipment.
The Smoke-Season Plan
A clean room set up before the first alert, what to do as the AQI rises, wearing an N95, the smoke kit as a checklist, and a smoke-day log that shows how well the clean room holds.
Upkeep and Logs
A maintenance calendar that counts itself, a filter log, a 7-day monitoring log that averages PM2.5, CO2 and humidity against their targets, special situations, FAQ and glossary.
Three Steps, a Few Minutes a Day
Measure first
A particle monitor, a CO2 monitor and a hygrometer turn the checklists into numbers.
Walk the six room sheets
Tick what needs work; each sheet scores itself and the summary ranks the rooms.
Fix in order, then prepare
Source first, then fresh air, then filtration; set up the clean room before smoke season.
Your PDF E-Book, Plus a Free Online Edition
The PDF e-book (what you buy)
- 36 A4 pages, ready to print or fill in on screen
- Calculations fill in by themselves in Adobe Acrobat Reader, Chrome, Edge, Firefox and Foxit
- Works offline; keep it forever
Free bonus: the online edition
- The same e-book as an interactive page in any browser on iPhone, Android, tablet or computer
- Every calculator always works, and your entries save automatically on your device
- Add it to your home screen and open it like an app
Is This System Right for You?
- Homeowners and renters who want to know what is in their indoor air and what to fix first.
- Households with asthma, allergies, young children, pregnancy or older adults.
- Anyone about to buy a purifier or furnace filter who wants to size it properly.
- People in wildfire regions who want a clean room ready before the smoke arrives.
- It is not a professional home inspection or a laboratory air test.
- It does not replace licensed professionals for gas appliances, radon systems, lead, asbestos or large mold jobs.
- It is not medical advice; if a CO alarm sounds, get everyone outside and call 911.
Clinical Evidence & Scientific Grounding
Guideline values follow the WHO global air quality guidelines (2021) and the EPA's 2024 PM2.5 standard (9 µg/m³ a year) and AQI bands. Humidity, mold and radon guidance follow EPA (30 to 50% humidity; dry within 24 to 48 hours; the 10 square foot rule; fix radon at 4 pCi/L or more). Ventilation rates follow ASHRAE 62.2, filter efficiencies ASHRAE 52.2 (MERV), purifier sizing the AHAM two-thirds rule, and CO alarm placement NFPA 720 and UL 2034. Further sources: CARB air cleaner certification, CDC carbon monoxide and wildfire smoke guidance, and the studies cited on the sources page.
This publication is an educational and organizational tool. It does not diagnose, treat or cure any condition, and it does not replace advice from your doctor or a licensed professional.
Tools and staples mentioned in the e-book: see our recommended gear list.
Want a Free Printable Quick-Start?
Size a HEPA purifier for two rooms with the two-thirds rule and five air changes an hour, a six-point label check, the MERV ladder for your furnace, and how to place and run the unit.
Frequently Asked Questions
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