A Pre-Filter Cartridge is the first line of defense in your RO water purifier. It traps larger particles like dust, sand, and rust before they reach the main filters, helping extend the life of your RO membrane. I installed a pre-filter in my system for just ₹250, and it significantly reduced clogging and maintenance issues. Pros include longer RO life, cleaner water, and better overall system performance. Cons are minimal but include regular cleaning or replacement every 3–6 months. For anyone living in areas with dirty or hard water, a pre-filter cartridge is a smart, affordable upgrade.

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