There are a few possibilities:
- Filters may have come to the end of their life cycle.
- The machine and/or RO filter may have become clogged due to waste water scale deposit or extremely hard water.
- You may have a defective filter.
Please check the following:
- Remove the new filter. Reinsert the filter(s) and be certain the filter label is facing forward. If this does not help, please contact Customer Support and they will replace the filter(s) that was/were just installed.
- You may need to descale your unit. This should be done periodically, particularly if you have very hard water. Please see How do I descale my AquaTru? for step-by-step instructions.
- Note: The reason that filtering time is increasing is due to waste water scale deposited on filters and internal surfaces. To minimize the effect of waste water scale deposits, it is important that you always empty out the remaining waste water in the tap tank before refilling. The water left in the tap tank contains highly concentrated contaminants filtered out of tap water to produce the clean water. The level of the contaminants in the left-over water can be up to 6 times higher than the water coming out of the kitchen faucet. If this water is not discarded, the unit will develop scaling much faster and will require more frequent descaling.
If you are in an area with hard water, you may need to descale your AquaTru more frequently.