Air Cleaners

Written by Norene Anderson
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Air cleaners are made as throwaway filters and as washable filters for reuse. The most common throwaway is the flat filter that is one inch in thickness and made of fiberglass. Some are made of polyester. The MERV rating on these filters are zero to one. This is very low on the MERV rating scale of up to 16.

The pleated throwaway air cleaners have a slightly higher MERV rating at three to six. These are usually made of polyester and cotton. The ratings improve greatly in the deep pleated and electrostatic pleated filters. These are designed to pick up mold and other difficult to capture allergens.

Use High-Rated Air Cleaners

When choosing an air filter, you should consider the kind of pollutants you need to attract. If you are not sure, it is always best to go with the highest MERV rating you can find. The higher the number, the better will be the filtration. You also need to consider the number of times the air cleaners circulate or change the air per hour. A low circulation rate can be as non-productive as a low-rated filter. The air should be cleaned at least four times per hour for maximum benefit.

Without the proper circulation through a high-efficiency air cleaner, allergens and pollutants can build up in the home. This makes individuals with respiratory problems more susceptible to breathing difficulties. Removing pet dander, pollen, mold, and other toxins will reduce the irritant level of the air and provide optimal conditions for healthy breathing.

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