AirIndoors
Comparisons of air purifiers, space heaters, air conditioners and fans, decided on the data: what to buy, what to skip, and why.
Air Purifiers
- Blueair Blue Signature Large Nordic Fog drops to $359.99
- Winix 5000 and C Series: Which True-HEPA Purifier Fits Your Smoke-Odour Budget?
Best overall: 4-stage filtration, 360 sq ft coverage and 27 dB operation at $129.99, $70 below the 5510 and 5520.
- Winix T and A Series Air Purifiers for Larger Rooms: Which Tower to Buy
Best overall: Covers 410 sq ft with five fan speeds and runs at 22 dB, the quietest listed, for $199.99.
- Coway Airmega Mighty Series: Which Mid-Size Purifier to Buy
Best overall: 233 CADR and 1748 sq ft coverage with a 6-month/1-year filter schedule, at $239.99.
- Levoit Core Air Purifiers: Which One to Buy for Bedroom or Living Room
Best overall: 143 CFM and 1,066 sq ft of coverage at $84.97, only $14.98 more than the Core 200S-P.
- Best Levoit Air Purifier for Pet Hair and Dust in Larger Rooms
Best overall: 250 CFM CADR and 1,862 sq ft coverage suit larger rooms, and its $189.99 price sits $70 above the Vital 100S-P and $70 below the Eleva 500X.
- Coway Airmega 300 vs 350 vs 400 vs 400S: Which Purifier for an Open-Plan Floor or Whole Apartment
Best overall: Covers 3120 sq ft at 328 CADR for $649, the largest coverage in the family.
- Alen BreatheSmart Air Purifiers: Which Size Fits Your Room?
Best overall: A mid-tier $449 unit rated 4.8, it sits $160 above the smallest model and $350 below the largest, making it the balanced choice for a large room.
- Coway Airmega 100 vs 150 vs 200M vs 250: Which Tower Purifier Fits Your Room?
Best overall: 246 CADR and 1,748 sq ft coverage at $229.99, only $40 more than the 150 and $100 more than the 100.
- Blueair Blue Pure Max: Which Size Clears Your Large Room Fast and Quietly?
Best overall: Highest airflow in the family at 435 CFM and 674 sq ft coverage, yet runs at 23 dB on low and is at its $349.99 90-day low.
- Blueair Signature vs Classic: Which Air Purifier Fits Your Large Room?
Best overall: Covers 705 sq ft at 455 CFM and runs at 23 dB, the largest coverage in the Signature line.
- Windmill Air Conditioners and Purifiers: Which One Fits Your Room
Best overall: Covers 250 sq ft at $289, the only window air conditioner here, and rated 4.8.
- Best Budget Dreo Air Purifier With App Control for a Bedroom or Office
Best overall: At $99.99 it is the least expensive model here while covering 856 sq ft with a 3-in-1 HEPA filter and six fan speeds.
Space Heaters
- Lasko Ceramic Tower Heaters: Which One to Buy First
Best overall: Same 900 W output and oscillation as the larger model, plus WiFi and voice control, for $20 less at $79.99.
- Best Dreo Space Heaters for a Cold Snap: 1500 W Picks With Thermostat and App Control
Best overall: 300 sq ft coverage, 8 speeds and a 41-95°F thermostat range at $129.98, its 90-day low.
- Which Vornado Whole-Room Heater to Buy: AVH10, MVH, TAVH10 and More Compared
Best overall: Auto Climate control plus whole-room circulation at $99.99, matching the VMHi300's price while undercutting the TAVH10 by $40.00.
- Best Vornado Personal Heater for Under-Desk or Bedside Use
Best value: At $29.99 it is the least expensive heater here, $5.00 below the VH202 and $20.00 below the Rise 12H.
Air Conditioners
- Midea Inverter Window and Portable Air Conditioners: Which One to Buy
Best overall: Heat and cool in one 8,000 BTU inverter window unit rated for 350 sq ft, at $379.00 — its 90-day low.
- Midea U-Shaped Window Air Conditioners: Which BTU Size to Buy (8,000 vs 10,000 vs 12,000)
Best overall: 10,000 BTU of cooling for spaces up to 450 sq. ft. at $449.99, splitting the difference between the smaller and larger sizes.
Fans and Air Circulators
- Which Dreo Tower Fan to Buy for a Heat Wave Without AC
Best overall: 1473 CFM air volume, 28 ft/s max air speed and 36 ft reach with 90-degree oscillation at $99.99, $30.00 under the Pilot Max S 714S.
- Best Dreo TurboPoly Air Circulator for Whole-House Cooling
Best overall: 1500 CFM max air volume and 120 ft max reach, the longest reach listed, with 150° horizontal oscillation at $159.99.
- Which Vornado Air Circulator Keeps One AC Cooling Several Rooms?
Best overall: At $79.99 it's the lowest-priced circulator here and sits at its 90-day low, making it the straightforward way to push cooled air toward other rooms.
Humidifiers
- Best Dreo Humidifier for Days Between Refills: 6L to 11L Compared
Best overall: Largest tank at 11 L with a 100-hour runtime and the quietest listed noise at 26 dB, for $139.99.
- Best Levoit Humidifier for Dry Winter Air: Bedroom to Whole-Room Picks
Best overall: 505 sq ft coverage and a 6 L tank at 30 dB, priced $30.00 under the LV600S and OasisMist 600S.
Dehumidifiers
- Best hOmeLabs Dehumidifier for a Basement or Whole Floor
Best overall: 50 pints/day across up to 7,000 sq ft for $269.99, only $35.00 more than the 25 Pint model's 3,500 sq ft.
How we compare
AirIndoors compares 111 models from 10 brands across 25 guides. We read each model's specifications from its maker's own product page and re-check prices daily (1435 readings so far; the latest on ). A pick follows from those figures and the current price, not from what a store pays us, and a star rating is quoted only when at least 25 reviews stand behind it.