Rank #1 in Best Air Purifier 2026: 10 Ranked on Real Air Changes

Winix 5500-2 Air Purifier, CADR 390 m3/h, 4-Stage Filtration, PlasmaWave

£159.00 4.6 from 27,504 Amazon ratings

Price and rating as shown on Amazon when we collected them. Both change.

The Winix 5500-2 leads this ranking on both specification and evidence. The listing quotes a CADR of 390 cubic metres per hour with four-stage filtration and PlasmaWave, a HEPA filter class, a 0.1 micrometre particle retention size, a 27.8 decibel noise figure and 70 watts of power draw, in a 6.7 kilogram body measuring 20.8 by 38.1 by 59.9 centimetres, with remote control.

CADR is the number worth comparing between purifiers, because it describes how much clean air the machine actually moves rather than how large a room the box claims. This one is among the highest here and, at 70 watts, also among the thirstier machines. At the time of collection it carried 27,504 ratings at 4.6 stars. Everything here comes from the Amazon listing rather than our own testing.

How those 27,504 ratings break down

An average hides its own shape. This is the spread behind the 4.6 stars.

5 star

77%

4 star

13%

3 star

2 star

1 star

Specification

Exactly as published on the Amazon listing, field for field.

Power Source	Corded Electric
Control Method	Remote
Filter Type	HEPA
Floor Area	360 Square Feet
Noise Level	27.8 Decibels
Particle Retention Size	0.1 Micrometer
Controller Type	Button Control
Wattage	70 watts
Contaminant Filtration Capability	Cigarette Smoke, Dust, Odors, Pet Dander, Pet Hair, Pollen, Volatile Organic Compounds (VOCs), Wildfire Smoke
Special Features	Manual, Portable, Programmable, Washable Filter
Filter Class	HEPA
Item Dimensions D x W x H	20.8D x 38.1W x 59.9H centimetres
Item Weight	6.7 kg
Specification Met	AHAM Certified, Allergy Certified, CE Certified, Certified HEPA, RoHS Certified, UKCA Certified
EU Spare Part Availability Duration	5 Years
Brand Name	Winix
Model Number	5500-2
Manufacture Year	2025
Global Trade Identification Number	08809154399167
Number of Packs	1

What buyers actually say

Quoted from customer reviews on Amazon

Verified purchase

“Very easy to set up, very quiet on sleep mode, cannot be heard at all. It is in a bedroom that spent hours on red on the air quality monitor but later changed to blue, had better sleep last night.The size is okay and design looks good.I just set it on auto as it has an ambient light sensor that automatically changes to sleep mode when it gets dark in the room.Odour removal is also perfect.It is worth all the money.”

Ivan

Verified purchase

“Having seen a few brands advertised on certain social media pages recently but as they were shouting at me (seeing them advertised everywhere), I wasn’t interested. Came across this beauty and instantly took an interest in it, especially with the PlasmaWave. Being in the healthcare profession as a frontline ambulance patient carer, this PlasmaWave may come in handy, if I bring home any unwanted viruses that become airborne.Very easy to setup. Was up and running in no time at all.Settings were easy to understand and straightforward. I left it on automatic and the indicator went straight to red. After an hour or so, it changed to blue but then, back to red but already, I could tell the difference in air quality. And for its size, really good at covering my small 10x10ft living room. It fits nicely in my living room, in which, I will locate it to my bedroom after a while.What is really impressive, is that, it was on fan 3 and I switched off my smart living room light and it went into sleep mode - all lights off and fan on one. It is very quiet and should be able to sleep soundly.As for odour removal, the air smells fresh with no lingering stagnant air.In a nutshell. This is an excellent Air Purifier and I am so glad that I purchased this one. Again, specifically for the PlasmaWave.Would I recommend it? 110%.”

Typhoon349