What Are the Different Types of HVAC Filters?

The HVAC filters used to heat and cool homes are an integral part of the system. They filter dust, pet dander, pollen and other particles that can harm you and your family.

These small particles get trapped in the filter’s mesh work so that the air circulating around your house is pure and free from such particles.

The higher the MERV rating of a filter, the more effective it is. Filters also protect the rest of the system from these small particles.

Therefore it is very important that you use the right type of air filter and change it whenever it becomes dirty. Here are the different types of filters available for HVAC systems in homes.

1.  Fiberglass Air filters

Fiberglass air filters are the least expensive and disposable in nature. They put less strain on the HVAC system when they draw in air and filter it.

However, they aren’t that effective at keeping dust and other particles out of the system. If you or your family members suffer from respiratory disease, this type of filter is not ideal for your house. It has a MERV rating of 4.

2.  Pleated air filters

Pleated air filters are manufactured using polyester and cotton folds. They are more expensive than fiberglass filters but are very effective at filtering out dust and other contaminating particles such as pollen, pet dander and mold spores.

Air filters with a dense network of pleats offer better filtering and keep the air free from dust and other particles. The MERV rating is between 5-9.

3.  HEPA filters

If you or any of your family members suffer from respiratory disease, then HEPA filters are the solution for you. They are highly efficient and effective in filtering the air. They are much more expensive; however, they can filter and remove up to 99.9% of pollen, dust, mold, pet dander, bacteria, viruses, and other small contaminating particles in the air.

The HEPA 16x25x2 air filter has a MERV rating of 11 or higher. However, you should keep in mind that the higher the MERV rating of a filter, the more difficult it is for your HVAC system to pull the air in. The filter should be compatible with your HVAC system.

4.  UV filters

UV filters use ultraviolet light to kill incoming bacteria, viruses, and other microorganisms that pass through these filters. However, they are not effective in removing dust particles and other pathogens.

In a nutshell

I hope this article was able to help you with all your questions related to HVAC filters. There are many types of filters available, each offering its own advantages and features.

Before purchasing your AC unit air filters, you should consider the type of HVAC system in your house, your budget and whether anyone in your house has a respiratory disease or not.

Do not forget to check the MERV rating, as it will help you determine which filter is more effective and efficient in its job.

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