Diagnosis
The AquaTru system utilizes a multi-stage filtration process where different components have varying lifespans. Because water quality (TDS levels) and daily consumption vary by household, there is no single "date" for replacement. However, the system is designed with specific intervals to prevent membrane fouling and ensure the alkaline remineralization process remains effective.
How to Fix It
Follow this general maintenance schedule to keep your system running efficiently:
- Pre-Filter: Replace every 6 to 12 months. This stage catches sediment and chlorine; if it clogs, it puts undue stress on the RO membrane.
- RO Membrane: Replace every 2 to 3 years. This is the core of the system. If you notice a significant drop in water production speed or an increase in TDS (Total Dissolved Solids), it is time for a change.
- Alkaline/Remineralization Filter: Replace every 6 to 12 months. This filter adds healthy minerals back into the water. Once exhausted, your water will lose its alkaline properties and taste "flat."
If That Didn't Work
If you are unsure of when the filters were last changed or if the water tastes metallic or bitter despite following the schedule:
- Perform a TDS Test: Use a digital TDS meter to check the output water. If the reading is significantly higher than when the filters were new, replace the RO membrane immediately.
- Check Flow Rate: If the carafe takes significantly longer to fill than it did originally, the pre-filter is likely clogged and needs replacement.
- Reset the System: After replacing filters, ensure you flush the system according to the startup procedure to remove air pockets and carbon fines.
Heads Up
Always use genuine AquaTru replacement filters. Third-party filters often have different micron ratings or chemical compositions that can leak or damage the RO membrane, voiding your warranty and compromising water purity.