Replacing the High Efficiency filter annually is required in order to maintain the health of the unit
The High Efficiency filter removes the very small particles, such as smoke (tobacco, burning wood, oil, rosin), dust mites, spores, mold spores, pollen, spray paint, spray paint dust, ashes, cement dust, auto emissions, textile fibers, fiberglass, hairspray, insecticide dust, copier toner and most viruses, just to name a few. As you can see, the High Efficiency filter is an extremely important filter and when used and maintained properly will dramatically improve your indoor air quality. We cannot stress enough the importance of the High Efficiency filter to our system and the fact the High Efficiency filter must be maintained in order to achieve the maximum results.
The High Efficiency filter cannot be washed and should be changed annually.