What Are the Different Types of Air Filters?

When it comes to air filtration, there are a variety of sizes and types available. From pre-cut filters to custom-sized ones, the size you need depends on the type of system you have and the size of the space it is intended for.

Standard Pre-Cut Air Filters

Standard pre-cut air filters are usually made from fiberglass or polyester material and come in a range of standard sizes. These include 4”, 5”, 6”, 8”, 10”, 12”, 14”, 16”, 18”, 20”, 22”, and 24”. The most common sizes are 4”, 5”, and 6”. These standard sizes can be found with MERV ratings ranging from 1 to 16.

Custom-Sized Air Filters

If your system requires a filter that isn't available in pre-cut sizes then you may need to order one that is custom-made. Custom-sized air filters can be created to fit any opening size and come in different materials as well as MERV ratings. Some popular custom sizes include 7”, 9”, 11”, 13”, 15”, 17”, 19”, 21”, and 23”.

Specialty Air Filters

In addition to standard or custom-sized air filters, there are also specialty types available. These include pleated air filters which use electrostatic technology; HEPA air filters which trap particles down to 0.3 microns; carbon-based ones which absorb odors; and more. Each type has its own unique characteristics designed for specific applications.

20x25x1 Air Filter

The 20x25x1 filter is one of the most popularly used in residential HVAC systems for removing dust particles from the air inside homes. This size filter typically comes with MERV ratings between 1 and 16, where higher numbers indicate better filtration efficiency.

Conclusion

When it comes to selecting an appropriate filter for your system, there is a wide range of options available including standard pre-cut sizes, custom-sized ones, as well as specialty types. The 20x25x1 filter is one example commonly used in residential HVAC systems. Ultimately, choosing an appropriate filter will depend on your specific needs.