When it comes to air filters for HVAC systems, there are a variety of options available. Pleated air filters are one of the main types, with reusable and disposable options. These pleats increase the surface area of the filter for better filtering. HEPA filters are great for those who need a filter that can combat allergens, while UV light filters kill bacteria and viruses with shortwave UV light.
Electrostatic filters create static that acts like a magnet for dust and other particles suspended in the air, while media filters have a larger surface area and successfully prevent significant static pressure while providing better filtration. When selecting the right filter for your HVAC system, it's important to consider your needs. Those living with allergies or other respiratory problems may benefit more from HEPA filters, while those looking for an environmentally friendly option may want to consider washable filters. UV light filters are great for killing microorganisms that could be hazardous to health, while electrostatic filters are one of the best options for those who need a filter that can combat allergens. Media filters provide the same level of filtration as a high-MERV filter without the negative consequences of airflow or static pressure. It's also important to consider the size of the filter you need.
Filters will be 1 inch thick for common systems and 5 inches thick for larger HVAC systems, with overall filter sizes ranging from 10 inches by 10 inches to 30 inches by 30 inches. To measure filter efficiency, experts use the minimum efficiency report value (MERV), which is a graph that classifies filters according to their ability to capture particles. The rating ranges from 1 to 16, with 16 being awarded to the types of air filters with the best filtering capacity. No matter what type of filter you choose, it's important to ensure that it is well maintained in order to ensure that it works as it should. This includes making sure that the filter is completely dry before putting it back in, as even the smallest amount of moisture that remains can cause mold and mildew to form on the filter and be expelled back into your home.