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Four Frequently Asked Questions About Pleated Filters Answered

How would you make wise purchase decisions? By asking questions! As it can undoubtedly help you out in securing valuable insights. Consequently, these insights will unravel the intricacies of the product and blow away any doubts you have. Similarly, when buying pleated filters, many customers ask tons of questions. Therefore, we shall discuss these four frequently asked questions about pleated filters.

What are pleated filters?

These are sediment filters that can filter out undissolved floating particles from a water supply. However, these cannot filter out dissolved chemicals and heavy metals from the water. Apart from being used to filter water supplies, there are air pleated filters also. Air pleated filters trap airborne particles. Moreover, air pleated filters are made from polyester, paper, and cotton folded into pleats.

How do they work?

Pleated filters are often referred to as surface filters. This is because these filters trap sediments on their surface. Thus, “pleating” the surface material increases the surface area of the filter for more efficiency.

Now, let’s move on to discuss the efficiency of a pleated filter. First of all, every pleated filter has a micron number. This number indicates the size of particles a filter can trap and remove. For example, a filter with the rating of five microns can easily filter out particles the size of five microns or larger but will allow the passage of particles smaller than five microns. Hence, if you want fine filtration with the smallest particles filtered out, go for low micron ratings, such as one micron.

Moreover, they are further classified as nominal or absolute, indicating the particle removal efficiency of the filter. Hence, a “nominal” filter performs a satisfactory filtration job with an ability to filter out 85% of the particulates. However, when your setup requires a more refined output, opt for absolute filters as they work with an efficiency of 99%.

What are their advantages?

Now, with all the basics covered, let’s discuss why a pleated filter is a smart choice. These are the advantages of pleated water filters:

  • These have a relatively long life.
  • No binders or additives that can cause foaming.
  • Pleating increases the filter’s capacity.
  • High particle removal efficiency.

Moreover, using a pleated air filter for your HVAC system provides the following benefits:

  • Requires fewer replacements.
  • Does not promote bacterial growth.
  • Efficient filtration, so coils remain cleaner.
  • Better air quality with fewer suspended particles.

When should you replace a pleated filter?

Usually, a pleated filter has a long life, but everything good must come to an end. Hence, if you start to find sediment in your water supply, a particular new odor, or metallic taste, it might be the time to change your filter. The same goes for air filters; if you feel a drop in the air quality or find your filter dirty. Then you may need to replace or clean it. Moreover, look for potential indicators in the guidebook that comes with a new purchase or dial the seller.


We discussed in detail the most frequently asked questions about pleated filters. Thus, for more knowledge, visit Clean Liquid Systems because we believe in empowering our buyers. Moreover, you can call us at 713-253-0100 for more inquiries.