What type of filter is advised for gas furnace maintenance?

Using a HEPA filter is advised for gas furnace maintenance due to its high-efficiency particle air (HEPA) technology, which is designed to trap small particles and allergens effectively. HEPA filters can capture up to 99.97% of particles as small as 0.3 microns, significantly improving indoor air quality. This is particularly beneficial for individuals with allergies or respiratory issues, as it can remove dust, pollen, pet dander, and other particulates that may circulate in the air when the furnace is operating.

In the context of gas furnaces, ensuring clean air can also help maintain the efficiency and lifespan of the system. Regular replacement of HEPA filters helps prevent dust and debris from accumulating in the furnace, which can lead to reduced efficiency and potential mechanical issues over time.

While other types of filters, such as carbon filters or washable filters, may serve specific functions like odor removal or reusability, a HEPA filter is uniquely suited for maintaining high air quality and furnace efficiency during gas heating operation.