Explained: Different Types of Air Filters for Your Home or Office Air Conditioning Unit
Annette • May 6, 2025

We all know that when it comes to maintaining a comfortable and healthy indoor environment, your HVAC system plays a crucial role. But did you know that an essential component of this system is the air filter? Air filters not only help improve air quality but also ensure the efficient operation of your air conditioning unit. Today, we’ll explore the various types of air filters available for your home or office AC unit and explain how choosing the right one can make a significant difference in your indoor air quality.


Welcome to the world of air filters with Reliant, your trusted HVAC company.


Why are air filters important?

Improved air quality

Air filters trap dust, pollen, pet dander, mold spores, and other particles, ensuring that the air you and your family breathe is cleaner and healthier.

Energy efficiency 

A clean filter allows your AC unit to operate more efficiently, reducing energy consumption and lowering utility bills. 

Extended lifespan of your HVAC

Air filters prevent problems such as debris from accumulating on sensitive HVAC components, prolonging the life of your system.

Allergy and asthma relief

High-quality air filters can help reduce allergens and irritants, providing relief for those with allergies or respiratory conditions.


What are the different types of air filters?

Let’s look at the most common varieties of air filters.

Fiberglass filters

Fiberglass filters are the most basic and affordable option, designed to capture larger particles. However, they may not be as effective at filtering out smaller allergens. These filters are typically disposable and need to be replaced regularly.

Pleated filters

Pleated filters are a step up from fiberglass filters. They have a larger surface area due to their folded design, which allows them to capture more particles, including smaller ones like dust and pollen. Pleated filters are available in various MERV (Minimum Efficiency Reporting Value) ratings, indicating their efficiency in capturing particles.

HEPA filters

High-efficiency particulate Air (HEPA) filters are renowned for their exceptional filtration capabilities. They can capture particles as small as 0.3 microns, making them highly effective at removing allergens, bacteria, and viruses from the air. HEPA filters are often used in hospitals and environments where air quality is critical.

Electrostatic filters

Electrostatic filters use static electricity to attract and trap particles. They are washable and reusable, making them cost-effective in the long run. These filters can be effective at capturing smaller particles and are an eco-friendly option.

Activated carbon filters

Activated carbon filters are excellent at removing odors, smoke, and volatile organic compounds (VOCs) from the air. They contain a layer of activated carbon that absorbs and neutralizes these pollutants. These filters are often used in areas with strong odors or chemical fumes.


How do you choose the right air filter?

Now that you know a little more about air filters, you might realize that there’s a lot to know! Don’t worry, we are experts, and you’re in great hands. Our technicians can help you choose the best filter for your needs and provide professional installation and maintenance services.


All you need…

At Reliant Heating & Air Conditioning, we understand the importance of having an HVAC system that you can depend on. Think of us for all of your HVAC maintenance and installation needs. Our reliable and skilled team has been guiding customers for over 20 years now. Contact Reliant today to learn more about air filter options and how we can help you optimize your HVAC system.

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