The size is printed on the edge of the current filter. A photo helps.
Pets, dust or allergies each point to different filter options.
The filter location, size and frame are checked.
The new filter is installed in the direction of the airflow arrows, with no gaps.
You learn how often to check it, and how to clean it if it is washable.
ENERGY STAR recommends checking, cleaning or changing it once a month, especially during heavy use.
Not for every system. Very restrictive filters can reduce airflow, so the filter should suit your equipment.
Flush it with water against the airflow arrows, rinse the other side, let it dry completely and reinstall it.
Yes. Install it with the arrows pointing toward the equipment, in the direction of airflow.
