The warranty replaces any manufacturer's defect. It sounds more like you have a maintenance issue though. You did not clarify if each filter was noisy or exactly why you replaced them, nor what type of noise you are hearing, but to replace 4 filters in a year indicates that there is an issue with cleaning the filter system out. Noise is generally caused by sand substrate, which will destroy impellers in a month or two, air stones placed under or near the intake tube, hard water or calcium deposits, and other types of detritus or build up such as hair, algae, etc. To check for any of these issues, remove your intake tube, then the housing it is installed into, which will bring up the impeller assembly. These items are clearly marked in the Quick Set Up Guide that came with the filter. Should you need another copy you may download it right from the Penguin Power Filter product page on our site. Check the impeller assembly over carefully for the above issues, as well as warping, imbalance, damaged fins, and so forth. Using a q tip and/or toothpick or straw, clean out any lodged debris that you find down in the motor which is in the bottom of the filter box and is the area the impeller sits in. This is right in the middle of the filter box. Next, clean this area with a q tip and distilled white vinegar. If you tend to have hard water or have a salt tank, soak the impeller in vinegar every month or two for about 15 minutes. Please call us if you have any questions or cannot resolve the issue. 1-800-322-1266.
Date published: 2016-08-31