How Often Should the RO Membrane in a Pure Water Machine Be Replaced?

When selling and repairing water purifiers, customers often ask, "How long does the RO membrane last? How often should it be replaced?" It's difficult to give a precise answer to this question because it depends on factors such as water usage, water quality, and the frequency of pre-filter replacement. Generally, the membrane's lifespan depends on its chemical stability, the physical stability of the components, its cleanability, the influent water source, pretreatment, cleaning frequency, operator skill, and the frequency of pre-filter replacement.

Generally, it should be replaced every 1-2 years, depending on the source water quality and output flow rate. Cleaning the water purifier after a short period of use protects the RO membrane and extends its lifespan.

Friendly reminder: Regularly replacing the pre-filter protects the RO membrane's lifespan. If the pre-filter isn't replaced regularly, firstly, less water reaches the RO system, and secondly, the water becomes dirtier, increasing the RO system's workload and lowering the quality of the produced water. It is recommended to replace the pre-filter of the water purifier regularly, every 3-4 months, which will protect the RO membrane.