<h1>Carbon & HEPA Pre-Filters: Why Any Air Filtration System Needs Them</h1>

A lot of air purifier systems and portable units only have HEPA and carbon filters, with no pre-filters. And if you notice, these air cleaners typically have a filter life that is only a few months, instead some competitor’s air purifiers with filter life of 2-5 years. Why is this?  Most top-rated air purifiers have a similar quality HEPA filters, and many have quality carbon filters as well, so it can’t be that.  Well, we can tell you that, most of the time, the extended filter life is due to having a good pre-filter system that prevents the larger particles from prematurely clogging the main filters, reducing airflow, performance, and decreasing the life of not only the HEPA and carbon filters, but also the air purifier or filtration system.

Pre-filters that are electrostatic are best, as they have al ‘static electricity’ type charge that attracts the particles to the filter, increasing efficiency and decreasing the likelihood that any will get through that filter. Brands like Aller Air and Austin Air both have pre-filters in all of their units, and consequently, their units have much longer filter life averaging about four years, which is much better obviously because it saves you money on replacement filters and saves time because you’re not having to deal with filters every few months, except to replace the pre-filters which is important.

Replacing HEPA air cleaner prefilters after vacuuming once is highly recommended because pre-filters do lose their electrostatic charge and can be damaged by repeated vacuuming. And you want to replace the pre-filters every 3-6 months to ensure that the larger particles don’t get pushed through by the airflow and clog up your HEPA and carbon filters, defeating the whole purpose of having a pre-filter. 

Also try to stick with pre-filters made by the same manufacturer as your air purifier or air cleaner system. These are designed to work with the unit and aftermarket pre-filter material often doesn’t work quite as well. However—if your air purifier doesn’t have a pre-filter, you can often extend the life of your main filters by 50-100% by purchasing cut to fit pre-filter material and placing in front of your main filters (so that the air goes through the prefilter first).

At Air Purifiers and Cleaners.com, we sell the best manufacturer-made replacement carbon prefilters, and HEPA prefilters for Austin Air and Electrocorp air cleaners, which are all top-rated air purifier brands--as well as cut to fit pre-filter material. And we sell all of these products at the best, cheapest discount prices every day, with free shipping due to our low overhead and great relationships with suppliers. If you have any questions about air purifiers, indoor air quality, pre-filters, or anything air quality related, give our experts a call toll-free at 1-800-701-2513. We’re here to help!

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