Premium kit

Quick answer

A paid downloadable kit is in preparation. Nothing on this site is behind it: every sizing calculator, every review and every complete setup is free to read and will stay that way.

Fill-in worksheets covering a home's air quality from the first square-footage entry to the yearly budget: a home-at-a-glance card, a room-by-room CADR and air-change sizing sheet, a true-HEPA-vs-marketing buying decision sheet with the ozone check, a filter replacement schedule and cost tracker, an HVAC filter and MERV planner that checks your system's airflow limit, a reusable indoor/outdoor air quality log, a wildfire smoke and allergy season clean-room plan, a humidity and mold checklist sized both directions, a VOC and formaldehyde sources room-by-room audit, a low-VOC / low-emission buying guide explaining what GREENGUARD, CARB Phase 2 / TSCA Title VI, FloorScore, CRI Green Label Plus, EPA Safer Choice and Green Seal each actually cover, a renovation and new-furniture off-gassing plan, a cleaning and household products swap list, a VOC monitor log, a testing and professional-help sheet, and a budget planner by setup tier. Two filled-in examples, a companion spreadsheet with a room sizing calculator and a filter cost tracker, a bonus AQI and MERV quick-reference card, and an online buyer guide with the site's own current picks by setup tier plus certified low-VOC materials and products.

Get it for $24

The one purchase that actually changes outcomes

GermGuardian HEPA Air Purifier - Large Room Air Purifier for Bedroom, Office, Dorm, and Home - Filters Pet Dander, Dust, Pollen, Smoke, Scents - AC4825E - 22" Tower - Gray

No reference document substitutes for a machine sized to the room with a published airflow figure behind it. If you are deciding where to spend, spend it here rather than on paper.

Under $100Check priceBudget range; Amazon shows today's price

Prices and specifications change, so check the listing against the number a calculator on this site gave you.

Tell me when the kit is ready

One page with every item in this setup and its budget range, plus the five year filter cost, so you can total the whole thing before buying any of it. After that, a few short emails, then a couple a month at most. Unsubscribe anytime.

After the list, a few short emails, then a couple a month at most. Unsubscribe anytime. You can also just read it on the site.

Purifiers worth having first

Common questions

Is anything on this site paywalled?

No, and nothing is planned to be. Every sizing calculator, every purifier and dehumidifier roundup and all three complete setups are free to read in full. A paid download, if and when it exists, will be a convenience for people who want the reference on paper rather than a gate on anything already published.

What would a paid kit contain?

A printable planning reference: the room-by-room sizing worksheets, the filter cost and replacement tracker, the HVAC and MERV planner, and the three complete setups with their budget reasoning. All of it derived from what is already on the site, arranged for use at the HVAC closet rather than on a screen.