Best Carbon Monoxide Detectors of 2026
We tested battery, plug-in, and hardwired CO alarms to find the four worth trusting, with ppm readouts, decade-long batteries, and whole-house coverage.
Air Quality
Articles, guides, and product reviews about air quality.
Best Mold Test Kits for Home of 2026
We tested mold kits for air, surfaces, and HVAC, comparing plate counts, lab analysis, turnaround, and identification help.
Best Whole-House Humidifiers of 2026
We tested ducted and freestanding whole-house humidifiers to find the ones that hold 40% all winter, and which designs to skip.
Best Small Dehumidifiers for Closets of 2026
We tested compact dehumidifiers for closets and chose the quiet ones that actually pull water, plus cordless picks for closets with no outlet.
Best Radon Detector for Home of 2026
We tested continuous radon monitors for accurate long-term readings, easy placement, and app-free simplicity. These are the best for basements and homes.
Best Warm Mist Humidifiers of 2026
We tested warm-mist and warm/cool humidifiers for quiet bedroom comfort, easy filling, and steam that actually reaches the room.
Best Whole-House Air Purifiers of 2026
We tested large-room air purifiers for open-plan homes and whole-house coverage, ranking the quiet, high-CADR picks worth the money.
Best Air Purifiers for Allergies of 2026
We tested air purifiers against pollen, dust, and pet dander. Here's the one that clears a bedroom fastest, plus picks for large rooms and tight budgets.
Best CO2 Monitors for Home of 2026
We tested CO2 monitors for bedrooms, kitchens, and classrooms. The Aranet4 wins on accuracy and battery life, with budget and app-connected picks below.
Best Cool Mist Humidifiers of 2026
We tested cool mist humidifiers for bedrooms, from a near-silent Levoit to a filter-free Vicks, and picked the ones worth your nightstand.
Best Dehumidifier for Basement of 2026
We tested basement dehumidifiers for moisture removal, drainage, noise, and efficiency. Here's what to buy for a damp, musty basement.
Best Dehumidifiers for Bedrooms of 2026
We tested quiet dehumidifiers for bedrooms and picked the ones that hold a set humidity without keeping you awake, plus a heavy-duty pick for damp rooms.
Best Easy-To-Clean Humidifiers of 2026
We tested humidifiers that are genuinely easy to rinse, scrub, and refill: wide tank openings, top-fill lids, and filter-free designs for every bedroom.
Best Essential Oil Diffusers of 2026
We tested electric diffusers for bedrooms, large rooms, and budgets. Find the quietest, easiest-to-fill picks and the bundles worth buying.
Best HEPA Air Purifiers of 2026
We tested HEPA purifiers for bedrooms, big rooms, pets, and smoke, comparing verified CADR, sleep-mode noise, filters, and running costs.
Best Humidifiers for Baby Rooms and Nurseries of 2026
We tested nursery humidifiers for quiet nights, dark rooms, and easy cleaning — four worth buying, from a budget four-liter to a filtered evaporative.
Best Humidifiers for Bedrooms of 2026
We tested bedroom humidifiers for quiet, easy filling, and clean tanks. Our top pick runs 42 hours and switches every light off at bedtime.
Best Indoor Air Quality Monitors of 2026
We tested monitors that track CO2, PM2.5, VOCs, and radon, and picked the ones worth living with, from budget screens to whole-home sensors.
Best Large Room Diffusers of 2026
We tested large-room diffusers for open plans, whole-home HVAC, and big water tanks, so you can match coverage, controls, and refill costs.
Best Air Purifiers for Bedrooms of 2026
We tested bedroom air purifiers for quiet sleep, real room coverage, and easy filter care. These are the picks we trust on a nightstand.
Best Air Purifiers for Large Rooms of 2026
We tested large-room air purifiers for certified coverage, noise, and filter costs, and picked the models that keep a big open space clean.
Best Air Purifiers for Smoke of 2026
We tested smoke-ready HEPA purifiers with carbon filters for wildfire, tobacco, and cooking smoke, comparing CADR, odor control, noise, and filter costs.
Best Air Purifier Replacement Filters of 2026
We tested genuine and compatible replacement filters for GermGuardian, Levoit, and Blueair purifiers to help you match fit, filtration, and pack size.
Best UV Sanitizer Wands of 2026
Find the right UV wand for your routine: which rechargeable models actually hold a charge and deliver consistent disinfection without the AA-battery hassle.