Best 2021 Air Purifiers

#1 PuroAir 240
4.6

Best for quiet, simple cleaning in bedrooms or apartments. Skip it if you need verified large-room CADR value, app control, or guaranteed neighbor-smoke removal.

Pros: noise level, air purification performance

Cons: filter replacement cost, air quality sensor accuracy

#2 AirDoctor 5000
4.3

Best for large rooms, strong particle cleanup, quiet everyday running, and easy rolling. Skip it if you need app control, compact placement, automatic restart after outages, or low filter costs.

Pros: overall satisfaction, air purification performance

#3 Coway Airmega 250
4.2

Best for strong large-room cleaning, quiet low-speed auto operation, easy filter care, and allergy/smoke help. Skip it if you need a small, cheap purifier, app controls, or want to avoid...

Pros: maintenance ease, air purification performance

Cons: filter replacement cost

#4 Levoit Core 300S
4.2

Best for quiet, efficient small-room purification with useful smart controls. Skip it for large rooms, detailed VOC monitoring, or fully reliable auto/app behavior.

Pros: noise level, app connectivity

Cons: VOC sensor accuracy, handle design

#5 Honeywell HPA830W
4.2

Best for quiet HEPA cleaning in small or medium rooms. Skip it if you need strong odor/VOC removal, advanced app controls, or large-room power.

Pros: noise level, air purification performance

Cons: CADR rating, activated carbon filter

#6 Coway Airmega 250S
4.2

Best for strong large-room cleaning, handsome build, smart scheduling, and quiet low-speed operation. Skip it if you need best value, more quiet-speed cleaning power, or an app that never logs...

Pros: air purification performance, app connectivity

Cons: size and footprint, value for money

#7 MOOKA B-D02L
4.2

Best for quiet bedrooms, small spaces, odors, dust, and allergy relief on a budget. Skip it for verified large-room power, smart features, or worry-free long-term reliability.

Pros: noise level, air purification performance

Cons: filter replacement cost, reliability

#8 Levoit 400S
4.1

Best for fast particle cleanup, quiet everyday use, smart scheduling, and strong value in medium rooms. Skip it if you need heavy odor/VOC removal, washable pre-filters, flawless app behavior, or...

Pros: air purification performance, app connectivity

Cons: true HEPA filter, pre-filter quality

#9 Honeywell HPA5300
4.1

Best for strong whole-room dust, smoke, odor, and allergy relief. Skip it if hums, rattles, bulky handling, or frequent filter costs would bother you.

Pros: noise level, air purification performance

Cons: filter replacement cost, reliability

#10 Levoit Mini-P
4.0

Best for quiet, low-cost cleaning in a bedroom, desk area, nursery, car, or RV. Skip it for large rooms, heavy smoke, advanced controls, or the best performance per dollar.

Pros: noise level, aromatherapy feature

Cons: room coverage, filter life

#11 Alen BreatheSmart 75i
3.8

Best for quiet, powerful cleaning in large rooms. Skip it if price, replacement filters, bulky size, or app polish matter most.

Pros: air purification performance, allergen reduction

Cons: customer support, condition on arrival

#12 Dyson Purifier Hot+Cool Formaldehyde, HP09
3.7

Choose the Dyson HP09 for premium design, heating, smart air data, and broad purification. Skip it if you need budget value, true air conditioning, or maximum clean-air output per dollar.

Pros: heating performance, air circulation

Cons: value for money, size and footprint

#13 AROEVE MK01
3.7

Best for quiet, low-cost bedroom odor and dust help in small spaces. Skip it for larger rooms, heavy smoke, serious VOC control, or premium build quality.

Pros: noise level, air purification performance

Cons: room coverage, activated carbon filter

#14 Dyson Purifier Cool Formaldehyde TP09
3.5

Choose the TP09 for smart monitoring, formaldehyde/VOC focus, and stylish purification. Skip it if you need powerful cooling, quiet long-term operation, low filter costs, or dependable support.

Pros: air purification performance, real-time air quality monitoring

Cons: value for money, noise level

#15 Dyson Purifier Humidify+Cool Formaldehyde
3.4

Choose the Dyson PH04 for premium purification, humidifying, formaldehyde/VOC monitoring, and smart controls. Skip it if you need low cost, compact size, quiet max airflow, or proven pump reliability.

Pros: humidification performance, air purification performance

Cons: value for money, overall satisfaction

#16 GermGuardian AC4825
3.2

Best for simple, low-cost particle cleaning in a small room. Skip it if you need strong odor/VOC control, larger-room coverage, smart automation, or low long-term energy and filter costs.

Pros: noise level, air purification performance

Cons: value for money, room coverage

#17 Dyson Purifier Cool Gen1 TP10
3.2

Choose the Dyson TP10 for quiet air purification, clean looks, and simple room use. Skip it if you need strong cooling, app control, easy remote replacement, or maximum value.

Pros: noise level, air purification performance

Cons: air circulation, value for money

#18 Dyson Purifier Cool TP07
2.8

Choose the Dyson TP07 if you want a stylish smart purifier-fan with strong monitoring and gentle airflow. Skip it if you need powerful cooling, budget value, or low risk of...

Cons: air circulation, overall satisfaction