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LG

LG AeroTower

A from LG, with True HEPA + carbon deodorizing + pre-filter; UVnano on some SKUs filtration, rated for rooms up to 818 sq ft, smoke CADR of 90 CFM.

Who this is for:Shoppers looking for a purifier suited to large living rooms and open-plan spaces. If odors, pet smells, or smoke gases are a concern, this model includes activated carbon.

Owners like this air purifier because it stays low-noise compared to other models and it runs quietly enough to fade into the background.

Key specs

New to these numbers? Read What is CADR? and Decibels, translated
Room coverageiThe largest room, in square feet, this purifier can effectively clean — assuming standard 8-foot ceilings and 4–5 air changes per hour.Room size guide →818 sq ft
CADR · smokeiCADR — Clean Air Delivery Rate — measures how many cubic feet of air a purifier cleans per minute. Smoke particles are the hardest to capture, so smoke CADR is the honest number: aim for at least two-thirds of your room's square footage.CADR guide →90 CFM
CADR · dustiClean Air Delivery Rate for dust, in cubic feet per minute. Higher means faster dust removal.CADR guide →90 CFM
CADR · polleniClean Air Delivery Rate for pollen, in cubic feet per minute. Higher means faster relief during allergy season.CADR guide →100 CFM
Noise rangeiDecibels (dB) measure loudness on a scale where every +10 dB sounds roughly twice as loud. 20 dB is a whisper, 40 dB a quiet library, 60 dB normal conversation. For bedrooms, look for under 30 dB on the lowest setting.Noise guide →23–53 dB
Filter costiWhat a genuine replacement filter costs. Divide by the lifespan to get the real monthly cost of ownership.Ownership cost guide →$99
WarrantyiThe manufacturer's warranty period. Longer coverage signals confidence in the motor and build.1 years

Who the LG AeroTower is for

Specs only matter in context. Here's where the LG AeroTower genuinely fits — and the trade-offs worth knowing before you buy. If you're deciding between this model and similar options, focus on the fit cards below: they highlight the specific use cases where this purifier shines and the situations where it falls short.

  • Good fitBest in large living rooms and open-plan spacesRated for 818 sq ft, with a smoke CADR of 90 CFM — enough for rooms up to about 140 sq ft by the two-thirds rule, which delivers the 4–5 air changes per hour allergists recommend.
  • Good fitBedrooms and light sleepersAt 23 dB on its lowest setting, the LG AeroTower clears the 30 dB bedroom bar — roughly a whisper.
  • Good fitOdors, pets, and smokeAn activated carbon stage traps the gases a particle filter can't — cooking smells, litter-box odor, VOCs, and wildfire smoke gases.
  • Good fitAllergy and asthma householdsA True HEPA filter captures 99.97% of particles at 0.3 microns — pollen, dander, dust mite debris, and most smoke. Run it continuously for real symptom relief.
  • Good fitSet-and-forget operationListed features include ThinQ app, Wi-Fi, voice assistants, PM1.0 sensor, remote — handy for letting the purifier manage itself, though none of it replaces CADR headroom.
  • Keep in mindCADR is self-reportedThe LG AeroTower isn't AHAM Verifide, so its CADR and coverage figures come from the manufacturer rather than an independent lab — treat them as a ceiling, not a promise.

What owners say

1 recommendation
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  • 4.0 out of 5 starsr/BuyAirPurifier

    “the LG AeroTower (24 dB) and iAdaptAir (25 dB) do a good job of cleaning air in big spaces.”

    Read the thread

Compare with similar models

These alternatives share key traits with the LG AeroTower — same brand family or similar room coverage. Compare their scores, owner sentiment, and specs side by side to see which fits your specific needs better.

Common questions about the LG AeroTower

Quick answers to the questions shoppers most often ask before buying. If your question isn't covered here, check the full specifications below or compare against similar models above.

  • What size room can the LG AeroTower handle?It's rated for rooms up to 818 sq ft. Cross-checking its 90 CFM smoke CADR against the two-thirds rule puts the honest ceiling at about 140 sq ft for allergy-level cleaning — beyond that it still helps, just with fewer air changes per hour.
  • Is the LG AeroTower quiet enough for a bedroom?Yes — 23 dB on the lowest setting is under the 30 dB threshold most sleepers need, roughly a whisper. On high it reaches 53 dB, so size it to run on low or medium overnight.
  • Can the LG AeroTower handle odors and smoke?Yes — its activated carbon stage traps odor and VOC gases while the True HEPA + carbon deodorizing + pre-filter; UVnano on some SKUs filter handles the particles, which is the combination smoke and pet households need.

Full specifications

cadr dustiClean Air Delivery Rate for dust, in cubic feet per minute. Higher means faster dust removal.CADR guide →
90
cadr smokeiCADR — Clean Air Delivery Rate — measures how many cubic feet of air a purifier cleans per minute. Smoke particles are the hardest to capture, so smoke CADR is the honest number: aim for at least two-thirds of your room's square footage.CADR guide →
90
dimensions
10.4 x 10.4 x 44.1 in
weight lbs
27.6
cadr polleniClean Air Delivery Rate for pollen, in cubic feet per minute. Higher means faster relief during allergy season.CADR guide →
100
filter typeiThe particle filter grade. True HEPA captures 99.97% of particles at 0.3 microns; 'HEPA-type' has no standardized efficiency.Filter guide →
True HEPA + carbon deodorizing + pre-filter; UVnano on some SKUs
model numberiThe manufacturer's exact model identifier — handy when comparing listings across retailers.
U9CS1C
noise db maxiThe loudest fan setting, in decibels. 60 dB is normal conversation; above that you'll hear it across the room.Noise guide →
53
noise db miniThe quietest fan setting, in decibels. 20 dB is a whisper, 40 dB a quiet library — for bedrooms, look for under 30 dB here.Noise guide →
23
carb certifiediCARB certification means ozone emissions stay below California's strict safety threshold.Certifications guide →
True
smart featuresiExtras like air quality sensors, auto mode, app control, and sleep modes. Nice to have — they don't clean the air themselves.Smart features guide →
ThinQ app, Wi-Fi, voice assistants, PM1.0 sensor, remote
warranty yearsiThe manufacturer's warranty period. Longer coverage signals confidence in the motor and build.
1
room coverage sqftiThe largest room, in square feet, this purifier can effectively clean — assuming standard 8-foot ceilings and 4–5 air changes per hour.Room size guide →
818
has activated carboniActivated carbon traps gases, odors, and VOCs that HEPA filters can't catch — essential for smoke, cooking smells, and pet odor.Filter guide →
True
filter replacement usdiWhat a genuine replacement filter costs. Divide by the lifespan to get the real monthly cost of ownership.Ownership cost guide →
99.0