To maximize the efficiency and lifespan of your RO system membranes, regular maintenance is crucial. Start by cleaning the membranes every 3-6 months to prevent scaling and fouling, using the appropriate cleaning solution. Ensure that pre-filters are replaced regularly to prevent large particles from reaching the membrane. Keep an eye on TDS (Total Dissolved Solids) levels and monitor system pressure to avoid overworking the membranes. Check for any leaks or blockages in the system. Lastly, replace the membranes as needed, typically every 2-3 years, depending on usage and water quality, to maintain optimal filtration performance.