Since the outdoor air quality is getting worse day by day, it's important to take the right measures before you go out in your car. This is even more important if you travel by your car on a daily basis. The reason is that you will be exposed to polluted air on a regular basis. Here is another thing to consider: the air in your car is up to 7 times dirtier than the outdoor air. Let's take a look at some features to consider when buying one. The first question is what makes the air polluted? There are many air pollutants, such as smoke, gases, pollen, dirt, bacteria, mold and pet dander. The thing is that these pollutants can have a negative impact on your health. So, what is the way out? An easy way out is to go for a car air purifier. You can buy one from your nearby market. It's better to go for a unit that can meet your individual needs. Given below are a few important tips that can help you buy one. Go for The HEPA Filter HEPA is short for High Efficiency Particulate Arrestor. This dust collection technology was introduced in Japan. The good thing about this technology is that it can trap and kill up to 99.97% pollutants found in the air. The size of these pollutants can be 0.03 micrometers. The problem with these pollutants is that they can cause serious health problems if you don't take the right steps to remove them from your car. Layered Purification The air purifier you want to buy should have a highly efficient system of purification. For this purpose, you may want to buy one that comes with a HEPA filter, activated carbon and pre-filter. The role of the pre-filter is to remove the dust particles flying around in the air. On the other hand, the activated carbon helps reduce gaseous contaminants in your vehicle. Since the carbon filter has powerful absorbing properties, it can help get rid of bad odor from your car. As said earlier, HEPA filter can help remove a lot of bad elements from your vehicle. And the good news is that the process can make sure at least 99.9% harmful pollutants are eliminated. User-friendly Design Typically, car air purifiers are designed for use in a car cabin. Therefore, make sure that you go for one that is easy to install and operate. These purifiers are quite easy to use. All you need to do is connect them to a 12V socket in your car. Apart from the convenience factor, make sure that the product comes with enough capacity as well. It's much better to invest in one that has Clean Air Delivery Rate of at least 25 m3/hour. This will help purify the air in your vehicle without killing a lot of time. Long story short, these are a few important features that you should consider when looking for a good car air purifier to meet your needs. If you often drive by your car, make sure you invest in a good car air purifier to ensure you don't fall sick because of breathing in polluted air Article Source: http://EzineArticles.com/10270846