Boiling Water Tap Tanks & Filters
Replacement boiling water tanks and under-sink chiller tanks for boiling water taps, plus the filters that protect them from limescale.
The parts that sit under the sink and do the work: replacement boiling water tanks, and the under-sink chiller tank that turns a boiling tap into a 4-in-1. Buy a spare tank when one reaches the end of its life rather than replacing the whole tap.
Tank life depends heavily on water hardness and whether the filter has been changed on schedule. In a hard water area a neglected filter is the usual reason a tank fails early.
Keeping a boiling tap working
- Change the filter on schedule — it is the cheapest part and it protects the most expensive one.
- Descale according to the manufacturer instructions if you are in a hard water area.
- A chiller tank can be added to a tap that was plumbed for a 4-in-1 from the start.
- Isolate the power and let the tank cool fully before any work under the sink.
Also in this range: all boiling water taps, 4-in-1 taps and kitchen taps.
Frequently asked questions
How long does a boiling water tank last?
It varies with water hardness and use. Keeping the filter changed and descaling when the instructions say to makes the biggest difference; a tank running unfiltered hard water will not last as long.
Will any tank fit any boiling tap?
No. Tanks are matched to the tap model and to whether it is a 3-in-1 or a 4-in-1. Check the product page for which taps a tank is specified for before ordering.