Filtered, sparkling and boiling water taps
A filtering tap delivers treated water through a separate channel, so it never travels in the same line as ordinary tap water.
What to check
- 3-in-1 and 4-in-1 — 3-in-1 gives hot, cold and filtered; 4-in-1 adds boiling.
- Space under the sink — the filter or boiler lives in the base unit — check there is room.
- Filter changes — typically every 6–12 months, depending on hardness and use.
- Safety — boiling-water models have a child lock and an insulated spout.