
To keep your Sharp FP-K50U air purifier running at its best, you'll need to replace the filters periodically. The True HEPA filter typically needs replacing every 2 to 5 years. This timeframe can vary depending on how often you use your air purifier and the conditions in your home. The Active carbon deodorizing filter also requires replacement, but the exact schedule isn't specified in the manual. A good rule of thumb is to replace it when you notice odors coming from the air outlet or if you feel its odor-absorbing effectiveness has diminished. For replacement filters, it's best to consult your local Sharp dealer. Make sure to record the date of filter replacement in your manual for easy tracking. Remember, never wash and reuse old filters; always dispose of them properly, following local regulations.


