Winix Zero Filter A for Air Purifier
A capable multi-stage air purifier with solid filtration, held back mainly by the lack of smart-home features.
Humidifier vs Air Purifier: What's the Difference?
Humidifiers and air purifiers are often mixed up, but they do completely different jobs. Here's the difference so you buy the one that solves your problem.
Quick answer
A humidifier adds moisture to dry air (for dry skin, throats and coughs, mainly in winter). An air purifier filters particles like dust, pollen and pet dander out of the air (for allergies and air quality). They don't do the same thing, and neither replaces the other.
What a humidifier does
It releases a fine mist to raise humidity in a room that's too dry - common when central heating runs in winter. Higher humidity eases dry skin, chapped lips, a dry throat and static. It does nothing to clean the air of dust or allergens.
What an air purifier does
It draws air through filters (typically HEPA, often with carbon) to remove dust, pollen, pet dander, smoke and odours. It's for allergies, pets and general air quality. It doesn't change humidity, so it won't help dry air.
Which do you need (or both)?
If the air feels dry and your skin and throat suffer, get a humidifier. If you sneeze, have allergies or want cleaner air, get an air purifier. Some people use both - a purifier for allergens and a humidifier for winter dryness. Aim for 40-60% humidity; don't overdo a humidifier, as too much moisture invites mould.
Our top picks
#1
#2 
Winix Air Purifier for Home Bedroom
A capable 4-stage air purifier with a CADR of 390 m³/h, capturing 99.999% down to 0.1 microns, held back mainly by the lack of smart-home features.
#3 
Levoit Air Purifier for Bedroom Home
A capable multi-stage air purifier with solid filtration, held back mainly by the lack of smart-home features.
Frequently asked questions
Is a humidifier or air purifier better for allergies?
An air purifier, because it removes the pollen, dust and dander that trigger allergies. A humidifier only adds moisture and can ease dry airways, but too much humidity can worsen dust-mite and mould allergies.
Can one machine do both?
Some combined units add moisture and filter air, but dedicated machines usually do each job better. Match the machine to your main issue - dry air or airborne particles.
Do air purifiers dry out the air?
No - an air purifier doesn't remove or add moisture; it only filters particles. It won't dry the air or humidify it.
Bottom line
Our top pick is the Winix Zero Filter A for Air Purifier (our score 9.6/10) - A capable multi-stage air purifier with solid filtration, held back mainly by the lack of smart-home features..