Understanding the different stages of an air purifier is quite helpful to understand how this useful device works!
Air purifiers have become a frequently-used device in every household to fight the indoor air pollution and improve overall air quality.
But do you know that the air purifiers operate using a multi-stage filtration process? Yup, this process is designed to capture specific types of contaminants on each stage.
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So, without further ado, let’s understand the different stages of an air purifier!
Table of Contents
Stages of an Air Purifier

1. Pre-Filter Stage
This is the first and front-most line of defense in the air purifiers. This stage is responsible for capturing larger particles and contaminants like dust, lint, pollen and even pet hair.
The pre-filter stage also play a crucial role of an air purifier, because by removing these larger particles, the pre-filter helps the more delicate filters, thus prolonging its life.
2. HEPA Filter Stage
HEPA filters stand for High-Efficiency Particulate Air, these filters are a crucial component of most air purifiers, as these filters capture particles as small as 0,3 microns.
Well, 0,3 microns means that HEPA is able to filter allergens like spores, mold, pollen, pet dander and even bacteria thus making it highly effective at removing microscopic particles from the air.
3. Activated Carbon or Charcoal Filter Stage
The activated carbon or charcoal filter is the best at absorbing odors, gasses and chemicals.
This means that this stage can help with eliminating common household odors from cooking, smoke and pets thus enhancing the overall freshness of the air.
Also Read: “5 Types of Air Filters And Its Pros and Cons“
4. Germicidal Light Stage or UV-C
Some models incorporate ultraviolet (UV-C) light technology that tasked to kill or deactivate microscopic germs.
This UV-C light targets and neutralizes bacteria, viruses, and mold spores that might be floating around.
By eliminating these airborne pathogens, UV-C air purifiers help reduce the risk of them spreading and causing illness.
5. Ionization or Electrostatic Precipitation Stage
Air purifiers with ionizers or electrostatic precipitators work by charging particles in the air with an electrical charge.
This method is effective at removing dust, allergens, and even some viruses. But be mindful to choose a purifier with low ozone emissions, since too much ozone can irritate your lungs.
Also Read: “How To Choose an Air Purifier“
6. Photocatalytic Oxidation (PCO) or Titanium Dioxide Filter Stage
Some air purifiers use PCO technology, which is like a one-two punch against nasty smells and pollutants.
It works by shining UV light on a special material (usually titanium dioxide), allowing it to break down harmful chemicals (VOCs) and other airborne junk floating around your home.
So there you are, the different stages of air purifier!
But, one thing that you should also consider is the safety and quality of your air purifier.
Has your air purifier already certified with the SNI Certification? Well, the SNI approval is very important, especially in Indonesia.
This type of certification ensures that every product including air purifier has already been tested for its safety and quality, thus making it more assuring for the customers.











