Guides, reviews and how-tos
Every Clean Air Guides article in one place: air purifier and humidifier buying guides, combos, how-to and troubleshooting guides, and indoor air quality explainers.
Humidifiers
Generally yes, if it's clean, out of reach and free of essential oils. The real risks are hot steam, oils that are toxic to dogs and cats, and dirty water.
6 min read
Combos
Six 2-in-1 units sold in the US that both filter and humidify, with verified CADR where it exists, real humidifier output and the trade-offs.
10 min read
Air Purifiers
Four quiet, CARB-certified air purifiers for a nursery, with published noise levels, ionizer status, sleep and light settings, and safe-placement tips.
8 min read
Air Purifiers
Five basement air purifiers sized for open floor plans, plus what to do first about humidity, mold and radon, which no purifier removes.
8 min read
Air Purifiers
An air purifier can catch airborne mold spores and musty odors, but it won't stop mold growing. Five HEPA + carbon picks, and the moisture fixes that come first.
8 min read
Air Purifiers
Five carbon-filter purifiers for cooking, pet, garbage and smoke smells, plus why a range hood and source control beat any purifier.
8 min read
Air Purifiers
Six purifiers for tobacco, cannabis, vape and wildfire smoke, chosen by verified smoke CADR and carbon, plus how to size one for a smoke event.
11 min read
Air Purifiers
Four purifiers with published carbon weights from 3.6 to about 15 lb, and why ventilation and source control still come first for chemical fumes.
8 min read
Air Purifiers
Six air purifiers with washable filters or pre-filters, picked from AHAM, ENERGY STAR and maker data, plus why true HEPA is never washable.
10 min read
Air Purifiers
Why the exhaust fan comes first, what Levoit's manuals say about humid rooms, and three small purifiers for bathrooms and en-suites.
7 min read
Air Purifiers
What a filterless air purifier really is, why EPA warns about ozone, and the few CARB-certified options worth a look, plus a HEPA alternative.
9 min read
Air Purifiers
Four budget air purifiers at or under about $100 with verified CADR, honest filter labels, yearly filter and electricity costs, and what you give up.
8 min read