staff pick
$80 $100
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WHY I PICKED IT
"These are sleek-looking air purifiers so they'll fit in with a home's style and users won't feel the need to hide them. The up to 12-month filter life is such a convenient timeframe too, because it's easier to remember just having to change them once per year. Plus, the fact that they're relatively quiet means they can be run pretty much constantly and won't be disruptive with the noise."
Julie Ramhold
This two-pack of Blueair Blue Signature Mini air purifiers is $20 off the regular $99.99 price at Costco. Each unit covers up to 610 sq. ft. and uses 4-stage HEPASilent filtration that removes 99.97% of airborne particles down to 0.1 microns, with operation as quiet as 20 decibels. This deal ends November 15. Buy Now at Costco
Features
- Each unit purifies rooms up to 610 sq. ft.
- Real-time 5-color air quality indicator
- 4-stage HEPASilent filtration removes 99.97% of airborne particles down to 0.1 microns
- Motion-sensing display with auto mode and brightness controls
- Reusable, washable pre-filters with up to 12-month filter life
- Operates as quietly as 20 decibels
staff pick
Amazon · 4 days ago
$60 $90
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The Dreo Air Purifier 338 hits its Amazon all-time low of $60 and is 33% off. It carries AHAM Verified performance testing and ENERGY STAR certification. Three aroma pads are included for the built-in scent diffuser. Shipping is free. Buy Now at Amazon
Features
- Covers rooms up to 178 sq. ft. with air refreshed every 12.4 minutes
- AHAM Verified CADR of 115 CFM
- 3-in-1 filter w/ pre-filter, high-efficiency layer, and activated carbon
- PM2.5 air quality sensor w/ color-coded display
- Auto, Turbo, Sleep, and Normal modes w/ 4 fan speeds
- ENERGY STAR certified; 9.2" x 9.2" x 14.2", 5.6 lb.
staff pick
Amazon · Oct 19, 2026
$77 $100
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This 16-in-1 air quality monitor is $23 off, dropping to $77 from its regular $100 price at Amazon. It's the best price Amazon has charged for this model. It tracks CO2, PM2.5, PM10, HCHO, TVOC, temperature, and humidity on a single 7" display, with a built-in buzzer that alerts you when readings exceed set thresholds. Buy Now at Amazon
Features
- Tracks CO2, PM1.0, PM2.5, PM10, HCHO, TVOC, temperature, humidity, and AQI
- 7" display screen with adjustable brightness
- Built-in calibration support for consistent readings
- Built-in buzzer alerts when readings exceed set levels, with a mute option
- Switchable 12/24-hour time format and °F/°C temperature display
staff pick
Amazon · Sep 22, 2026
$60 $70
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Update: The price has dropped to $59.99 since this was originally published.
At Amazon, get this Lecoolife 10-in-1 Indoor Air Quality Monitor for $66. It's the best price Amazon has charged for this model. It tracks ten indoor readings at once, including PM1.0, PM2.5, PM10, HCHO, and TVOC levels, along with temperature and humidity, displayed on a large color screen with real-time AQI alerts. Buy Now at Amazon
Features
- Tracks PM1.0, PM2.5, and PM10 particle levels
- Measures HCHO and TVOC air pollutants
- Includes temperature and humidity sensors
- Large full-color display shows AQI, time, and readings
- Color-coded AQI indicator with real-time alerts
- Battery-powered desktop design measuring 4.17" x 3.54" x 1.96"