Our 15x20x1 air filters not only stop particles from entering the air but also lessen the strain on HVAC systems. These 15x20x1 air filters keep HVAC systems running at peak efficiency, extending their lifespan. The pleated design on some 15x20x1 air filters allows for maximum airflow and high DHC. If the filters are replaced as instructed, the HVAC system will continue to run without any issues. We have 15x20x1 air filters that are fit for heavy-duty industrial settings and ones that are better suited for household use. Take a look at our selection of 15x20x1 air filters, and get your free shipping today.