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Frequently asked questions

A filter set is the pre-filters and post-filters, such as sediment and carbon cartridges, which are changed regularly to protect the membrane and polish the water. The membrane does the reverse osmosis itself and normally lasts longer than the filters.

Both. You will find domestic replacement filter sets alongside larger 2.5 inch and 4 inch membrane elements, such as the Axeon and Spectrum 4021 and 4040 sizes, which are used in commercial and industrial systems.

Signs include a drop in the amount of purified water produced, water that tastes different, or a rise in the TDS reading on a meter. If you do not have a TDS meter, falling output is the easiest sign to spot.

In most domestic systems, yes. Isolate the water supply, release the pressure, and follow your system's manual for the filter order and any sanitising step. If you are unsure, contact us before ordering.