Some types of common HVAC filters
HVAC filters are an important home component, the part of your HVAC system that removes any air impurities. With that in mind, it’s important to replace these filters regularly, especially if it’s been a while. You may be surprised to know that there are multiple types of HVAC air filters. It’s best to know as much about them as possible in order to make the best decision on which one to use.
Flat-Paneled Fiberglass Filters – When it comes to MERV ratings, this disposable type of HVAC filter is at the lowest end, meaning it’s ineffective at improving your indoor air quality despite being able to trap dust and debris. However, due to its affordability, it’s a popular HVAC air filter choice.
Pleated Media Filter – The pleated media filter has a MERV rating between 5 and 13, meaning it can trap mold spores and pet dander. The pleats are designed to increase the filter’s surface area and increase its efficiency. It’s air filtration efficiency is still quite low, however, though it does provide less airflow resistance and can suppress fan noise.
HEPA Filter – HVAC replacement companies often recommend HEPA filters since they can provide the highest protection level when it comes to airborne particles. This type of filter is capable of capturing small microns, and also has a MERV rating between 17 and 20, meaning it can trap tobacco smoke and bacteria. However, installing it is no easy feat, as modifications from a contractor will likely be required for it to work with your HVAC system
Reusable Air Filters – Reusable air filters can be washed for continued use, making a complete replacement unnecessary. However, they do have a low MERV rating–between 1 and 4–and can also attract mold and mildew growth if installed before completely dry.
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