Did you know that a new air filter is less than 100% efficient?
An interesting fact associated with air filters is that they have to be used for a period of time, and get a little dirty, before they reach their maximum efficiency level. This break-in period allows a porous pre-coat, or cake, to build up on the filter; and this in turn is what is needed for the filter to reach its maximum filtering efficiency.
When a filter is washed, this "pre-coat" is lost every time, and it has to be "broken in" again.
Blowing out an air filter, with a typical compressed air line, can result in actually blowing a hole in the filter media. This occurs because the compressed air pressure is not regulated, and all of the air is concentrated on a small point of the media. Any holes in the media, of course, would allow dirt to be bypassed.
In dry cleaning a filter with a properly designed system, if any given particle of dirt is loosened from the media, it will be removed from the filter. This means that any dirt left in the filter after dry cleaning (which is usually less than 1%), is left in place where it remains part of the original pre-coat. Then the dry cleaned filter is put back into use, it has already been partially broken-in, and its efficiency is actually better than a brand new replacement filter. This increased efficiency has been confirmed with tests conducted by independent laboratories.
Maritime Clean Air does not believe in soaking, rinsing, and drying filters. We believe that if you combine filter media (the filter paper), moisture, and dust you will have problems. During the dry cleaning process, vibration is used to loosen dirt deposits. High-volume air flow then dispels loosened dirt particles from filter fibres and vacuums are used to clean and remove the more stubborn deposits from your filters.
Many companies spend thousands of dollars every year on new air filters. The prospect of being able to have them cleaned and used repeatedly, without damage to their expensive machines, is very attractive.
By clicking on this link, Filter Cleaning vs. New Savings, you will be shown a chart that illustrates the savings, over time, of cleaning filters versus purchasing new filters.
We have used six different filters for examples.