If you're replacing the internal filter in your Zip HydroTap for Home, you may have noticed several different part numbers available. It can be confusing to know which one you actually need.
The good news is that all current Zip HydroTap for Home models use the same internal replacement filter.
This guide explains which filter fits each model, what the limescale filters do, and how to choose the correct replacement.
Zip HydroTap Filter for Home: 93701
The Zip 93701 HydroTap Filter for Home is the standard internal replacement filter for all current residential Zip HydroTap systems.
This 0.2-micron filter helps improve the taste, odour and quality of your drinking water by reducing impurities before the water reaches your tap.
If you own one of the current HydroTap for Home models below, 93701 is the internal replacement filter you need.
Zip HydroTap for Home Filter Compatibility Guide
| Zip HydroTap for Home model | Available water options | Internal replacement filter | First-time limescale kit | Replacement limescale cartridge |
|---|---|---|---|---|
| Celsius Plus All-in-One Pull Out | Boiling, chilled & sparkling or boiling & chilled | 93701 | 95591 | 95601 |
| Celsius Plus All-in-One | Boiling, chilled & sparkling or boiling & chilled | 93701 | 95591 | 95601 |
| Classic Plus All-in-One | Boiling, chilled & sparkling or boiling & chilled | 93701 | 95591 | 95601 |
| Celsius Arc | Boiling | 93701 | 95591 | 95601 |
| Arc Plus | Boiling, chilled & sparkling, boiling & chilled or boiling | 93701 | 95591 | 95601 |
| Cube Plus | Boiling, chilled & sparkling, boiling & chilled or boiling | 93701 | 95591 | 95601 |
| Classic Plus | Boiling, chilled & sparkling, boiling & chilled or boiling | 93701 | 95591 | 95601 |
| Touch-free Wave | Boiling, chilled & sparkling, boiling & chilled or boiling | 93701 | 95591 | 95601 |
| Arc Mixer | Unfiltered hot & cold | No HydroTap filter required | — | — |
| Cube Mixer | Unfiltered hot & cold | No HydroTap filter required | — | — |
What Is the Difference Between 93701, 95591 and 95601?
These three part numbers are often confused, but they perform very different functions.
Zip 93701 – HydroTap Replacement Filter
The 93701 is the main replacement filter fitted inside all current Zip HydroTap for Home systems.
It filters your drinking water, helping to reduce impurities while improving taste and odour. To keep your HydroTap performing at its best, this filter should be replaced regularly.
For most homeowners, 93701 is the filter they need.
Zip 95591 – First-Time Limescale Filter Kit
The 95591 is a complete limescale filter kit.
It is designed for first-time installation and includes the filter head, bracket and all the components required to install a limescale filter beneath your sink.
If your HydroTap has never had an external limescale filter fitted before, this is the kit you need.
Zip 95601 – Replacement Limescale Cartridge
The 95601 is the replacement cartridge used with the 95591 limescale filter kit.
Once the limescale filter head has been installed, you simply replace the cartridge when it reaches the end of its service life.
The 95601 does not replace the 93701 HydroTap filter.
Many installations use both filters:
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93701 – filters your drinking water.
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95601 – helps protect your HydroTap against limescale.
Do I Need a Limescale Filter?
If you live in a hard water area, fitting a limescale filter is one of the best ways to help protect your Zip HydroTap from limescale build-up and maintain optimum performance.
Hard water contains naturally occurring minerals such as calcium and magnesium. Over time, these minerals can build up inside your HydroTap's heating system, reducing efficiency and potentially shortening the lifespan of key components.
Which areas of the UK have hard water?
Many parts of the UK have hard water, particularly:
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Greater London
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Birmingham
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Milton Keynes
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Oxford
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Cambridge
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Peterborough
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Norwich
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Chelmsford
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Reading
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Slough
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Watford
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Luton
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Most of the South East of England
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Most of the East of England
If you live in London or many of the UK's major towns and cities, particularly across southern and eastern England, there's a good chance your property has hard water.
Check your postcode
Not sure whether you live in a hard water area?
Use our Hard Water Postcode Checker to find out in seconds.
👉 Hard Water Post Code Checker
Simply enter your postcode to see whether your home has soft, moderately hard or hard water.
When should I fit a limescale filter?
A limescale filter is recommended if:
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You live in a hard water area.
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Your kettle regularly develops white limescale deposits.
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You notice scale building up on taps or shower screens.
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You want to help protect your Zip HydroTap and maximise its lifespan.
If your HydroTap already has a limescale filter installed beneath the sink, you will normally only need to replace the 95601 replacement cartridge, rather than purchasing another complete 95591 limescale filter kit.
Do I Need the Complete Kit or Just the Cartridge?
Buy the Zip 95591 if:
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You are installing a limescale filter for the first time.
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There is no existing limescale filter head beneath your sink.
Buy the Zip 95601 if:
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Your limescale filter head is already installed.
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You simply need to replace the existing cartridge.
How Often Should I Replace My Zip HydroTap Filter?
To maintain water quality and keep your HydroTap performing at its best, Zip recommends replacing the filter at regular intervals.
How often your filter needs replacing depends on:
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Water consumption
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Local water quality
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Number of people using the HydroTap
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The HydroTap's programmed filter reminder settings
As a general guide, most homeowners replace their HydroTap filter every 6–12 months, or whenever their HydroTap indicates that a filter change is due.
Replacing your filter on time helps maintain water quality, protects your system and ensures optimum performance.
How to Check Which Filter You Need
Before ordering a replacement filter:
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Confirm you have a Zip HydroTap for Home.
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Check your HydroTap model.
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Look beneath the sink to see if a separate limescale filter is already installed.
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If you already have a limescale filter head fitted, you will usually only need the 95601 replacement cartridge.
Frequently Asked Questions
Which filter fits my Zip HydroTap for Home?
All current Zip HydroTap for Home models use the Zip 93701 HydroTap Replacement Filter.
Is the Zip 93701 the same as the limescale filter?
No.
The 93701 is the internal HydroTap drinking water filter.
The 95601 is the replacement limescale cartridge.
What is the Zip 95591?
The 95591 is the complete first-time limescale filter kit. It is installed beneath the sink to help protect your HydroTap from limescale build-up in hard water areas.
What is the Zip 95601?
The 95601 is the replacement cartridge used with the 95591 limescale filter kit.
Does the Zip Celsius Plus All-in-One use the 93701 filter?
Yes. All current residential Zip Celsius Plus All-in-One models use the 93701 HydroTap replacement filter.
Does the Zip Arc Plus use the 93701 filter?
Yes.
Does the Zip Cube Plus use the 93701 filter?
Yes.
Does the Zip Classic Plus use the 93701 filter?
Yes.
Does the Zip Touch-free Wave use the 93701 filter?
Yes.
Do the Arc Mixer or Cube Mixer use the 93701 filter?
No. The Arc Mixer and Cube Mixer are mixer taps only and do not contain a HydroTap filtration system.
Why Buy Your Zip HydroTap Replacement Filters from The Tap Specialist?
At The Tap Specialist, we stock genuine Zip Water replacement filters and accessories to help keep your HydroTap performing exactly as the manufacturer intended.
When you order from us, you'll benefit from:
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Genuine Zip Water replacement filters
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Expert advice from HydroTap specialists
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Fast UK delivery
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Friendly UK-based customer support
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Help identifying the correct filter for your model
If you're unsure which filter you need, simply contact our team, call 0208 016 8898 or Whatsapp Us, or Email Us, with your HydroTap model number or send us a photo of the label beneath your sink. We'll be happy to help you choose the correct replacement.
Looking for Filters for a Zip HydroTap for Work?
This guide covers residential Zip HydroTap for Home models only.
If you have a commercial Zip HydroTap for Work installed in an office, workplace, school, healthcare setting or other commercial premises, the replacement filters are different. Commercial HydroTaps use different filter part numbers depending on the capacity of the command centre, so it's important to choose the correct filter for your model.
Read our complete guide here:
👉 Zip HydroTap for Work Filter Compatibility Guide
The guide includes:
- Every current Zip HydroTap for Work model
- Filter compatibility by command centre capacity
- Which models use the 93702 or 93703 replacement filters
- The correct limescale filter kit and replacement cartridge
- Frequently asked questions
- A complete compatibility chart to help you order the right filter first time