A Comprehensive Guide to the Functions of a Car Air Purifier

A car air purifier is a device that removes pollutants from the car cabin. As urban people spend so much time inside their vehicles, it’s important to maintain the air quality.

The car, like many enclosed spaces, can become polluted over time without proper attention. A purifier works like a charm to keep allergens, dust particles, odors, and other pollutants away. Let’s explore the functions of car purifiers and how they work.

Functions of a Car Air Purifier

An air purifier is a device that has been designed to remove impurities from the car’s interior. It can be helpful in combating allergies, asthma, and other respiratory illnesses. Let’s see how it works to make your car cleaner, safer, and more comfortable.

Kills Odor

The first function we will discuss is odor elimination. An air purifier removes unpleasant smells, such as cigarette smoke, stale food, and pet smell from your car’s interior.

Ionic purifiers work better in fighting odor in comparison to a HEPA system.

car air purifier
A purifier can make the car environment cleaner and healthier. (Credit: Aaron Yoo / Flickr)

Efficient in Removing Dust

The main function of all purifiers is to clean the air, making it healthy enough for breathing. It cleans particles like pollen and dust out of your car’s air. Air purifiers with a high dust removal efficiency remove more particles from the car’s air before it gets re-circulated, which means fewer allergens and irritants in your car.

Eliminates Pathogen

An air purifier helps eliminate bacteria, viruses, fungi, and mold spores from car cabin air. These pathogens can cause allergies or respiratory illnesses to people who spend long hours in their cars. If you are sensitive to dust or pollen.

How Do Car Air Purifiers Work?

There are basically two types of air purifier systems: HEPA and Ionic. Both of them perform the same tasks but in slightly different ways.

HEPA Air Purifier System

HEPA air purifier systems are designed to protect your home from airborne particles. They have a filter that captures 99.97% of all particles that are at least 0.3 micrometers in size. It can catch everything from dust to mites, pollen, pet dander, mold spores, bacteria, and more.

A HEPA filter contains an activated carbon-based material. It’s made of glass or synthetic fibers that are either washable or suitable for cleaning with a vacuum cleaner.


Ionic Air Purifier System

An ionic car air purifier works by emitting negative ions into the car cabin. The ions stick to the airborne particles, making them too heavy to float around. With such a system, you have to vacuum more often because of the heavy particles getting set on various surfaces.

Some systems suck in the airborne particles and store them on the filter’s metal plates. There is another system that works almost like a HEPA filter but loses efficiency pretty quickly.


A car air purifier is a smart and effective way to reduce allergens and pollutants in the car cabin. They can help improve your car’s interior by removing unpleasant smells, dust particles, mold spores, and other unhealthy particles.