Many people have noticed that the quality of air in their car is less than desirable. With the millions of cars on the road, construction work and road dust, you will mostly see a cloud of dust while you drive. Add to this is the fact that millions of drivers also smoke, making the air quality in their car go even lower than before. There is a way to fight back and regain the fresh air you deserve even while in your car -- by using car air purifiers. The two major types of car air purifiers are the cabin air filter and the combustion air filter. Both types of car air purifiers allow the air in your car to be much cleaner and healthier to breathe. However, these air purifiers are incapable of being quite as effective as the air purifier units that are based in the home. The portable car air purifier units are only able to remove large particles, which allow the smaller particles to still escape into the car. A car air purifier simply helps remove the harmful particles from the air that are inside your car. Many drivers are required to drive with the windows up on their car to avoid as many of the harmful particles as possible. The dust and smog that is in the atmosphere can really cause serious problems to those who suffer from allergies. Drivers with asthma as well as passengers also suffer the consequences of the poor air quality in their cars. There are several different models of car air purifiers that are available and they range in effectiveness. You should not expect to pay more than $200 for a good quality car air purifier, but you should look around for the best model for your particular needs. Various brands and models of car air purifiers attach to the car in different places. While research shows that placement in the car makes no difference in effectiveness, most consumers have a personal preference that should be considered when selecting the perfect car air purifier. A car air purifier is intended to easily plug into the car cigarette lighter in your car so it does not require a separate power source that most cars would be unable to accommodate. Most car air purifiers are designed so that they are not readily noticeable by those in the car, and are designed to be extremely quiet so as not to add to the noise level. Ease of use as well as effectiveness should be some of the main concerns to consumers seeking the perfect car air purifier for their needs.