The booster pump is what pushes water through your RO membrane at the pressure needed for effective filtration, and it's especially critical in areas with low municipal water pressure or overhead tank supply. A failing pump can cause slow filling, reduced output flow, unusual humming or grinding noises, or the purifier not working at all. Our technicians diagnose whether the issue is with the pump motor itself, its capacitor, the pressure switch, or the wiring and power supply feeding it. Where a repair is possible, such as replacing a worn capacitor or fixing a loose connection, we'll do that first to save you the cost of a full pump replacement. When the pump motor itself has failed or is too old to reliably repair, we fit a genuine or fully compatible replacement pump rated for your specific RO model's pressure requirements. After any pump work, we test the system's flow rate and pressure to confirm it meets the correct operating specifications, ensuring your membrane continues to filter effectively going forward.