The Zip HydroTap G4 is now an older, archived generation of the HydroTap, but many systems remain in daily use across UK workplaces.
If your business still has a G4, you do not necessarily need to replace it simply because Zip has moved on to newer HydroTap generations. Depending on the condition of the system, its service history and the availability of compatible parts, it may still be practical to maintain and repair your existing unit.
Wellbeing Group can support Zip HydroTap G4 systems with servicing, filter replacement, CO2 support, fault diagnosis and advice on whether repair or replacement is the better long-term option.
Is the Zip HydroTap G4 Discontinued?
The G4 is no longer part of Zip’s current HydroTap range and Zip now lists G4 models within its archived product section.
Archived G4 product pages state that these products are no longer available to purchase, although specification sheets, manuals and other technical information remain available for existing owners.
That means an existing G4 should not automatically be treated as obsolete or beyond repair.
Whether it remains practical to keep the system will depend on:
- Its age and condition
- How frequently it develops faults
- Availability of compatible parts
- Repair and servicing costs
- Whether the system still meets workplace demand
- Whether newer functions are now required
Can Wellbeing Group Still Service a Zip HydroTap G4?
Yes. Existing Zip HydroTap G4 systems can still be supported with professional servicing and maintenance.
A G4 service may include:
- Inspection of the tap and command centre
- Cleaning and sanitisation
- Filter replacement
- Limescale assessment
- Temperature checks
- Leak inspection
- Checks of boiling and chilled functions
- CO2 checks on sparkling models
- General performance assessment
- Identification of developing faults
Preventative servicing is particularly useful for older equipment because it can help identify problems before they develop into more serious failures.
What Zip HydroTap G4 Problems Can Wellbeing Group Help With?
As a G4 gets older, faults can develop within the tap, command centre or associated filtration and CO2 systems.
Common issues include:
No Boiling Water
If the G4 is no longer dispensing boiling water, first check:
- Power supply
- Water supply
- Whether the system is in an energy-saving mode
- Whether an error is displayed on the command centre
If the system has power and water but still fails to heat or dispense correctly, professional diagnosis may be needed.
Chilled Water Is Not Cold
Poor chilled-water performance can relate to the cooling system, ventilation around the command centre or another internal component.
Make sure ventilation is not obstructed before arranging an engineer visit.
Sparkling Water Is Flat
On sparkling G4 models, a loss of carbonation may be related to the CO2 cylinder or pressure settings.
Zip continues to publish specific G4 guidance for changing the CO2 cylinder, confirming that this remains a standard maintenance requirement for existing sparkling systems.
If replacing the cylinder does not restore normal carbonation, further diagnosis may be required.
Reduced Water Flow
Reduced flow may be caused by:
- An overdue filter
- Limescale
- Restricted pipework
- Water pressure
- An internal component
If changing the filter does not restore normal performance, the system should be inspected.
G4 Is Leaking
Leaks should be investigated promptly.
If water is visible around the tap or command centre:
- Stop using the affected function where appropriate
- Check for an obvious external connection issue
- Do not dismantle internal equipment
- Arrange professional support if the cause is unclear
Error Messages
Persistent warnings or error messages should not simply be reset repeatedly.
If the same fault returns, the underlying cause should be diagnosed rather than relying on repeated resets.
Zip HydroTap G4 Filter Replacement
Filtration remains an important part of maintaining a G4.
Archived G4 specifications show that many systems used Zip’s internal 0.2 micron GlobalPlus filter.
The correct replacement filter depends on the exact G4 model and installation, so compatibility should be checked before ordering.
An overdue filter can contribute to:
- Reduced water flow
- Changes in taste
- Increased scale problems
- Poorer system performance
Filter changes can be incorporated into routine servicing so workplace teams do not need to manage them separately.
Zip HydroTap G4 CO2 Replacement
G4 models with sparkling-water functionality require a CO2 cylinder.
If sparkling water begins dispensing flat, check the CO2 supply before assuming there is a larger system fault.
Zip continues to publish G4-specific CO2 cylinder replacement guidance for existing HydroTap systems.
Limescale & Hard Water
Limescale is an important consideration for older boiling-water systems, particularly in hard-water areas.
Over time, mineral deposits can affect internal components and system performance.
Potential signs include:
- Reduced flow
- Changes in boiling performance
- Unusual operating noise
- Longer heating times
- Increased servicing requirements
Correct filtration and regular maintenance can help manage scale build-up.
Internal descaling should be carried out by a suitably trained engineer rather than treated as routine DIY cleaning.
How Should a G4 Be Looked After Between Services?
Day-to-day care can help identify developing problems early.
Workplace users should:
- Keep the tap and surrounding worktop clean
- Avoid abrasive cleaning products
- Report leaks promptly
- Report changes in temperature or flow
- Monitor sparkling-water performance
- Avoid interfering with the command centre
- Report repeated error messages
Routine cleaning does not replace professional servicing, but it can help prevent small issues from being overlooked.
What About G4 Energy-Saving Settings?
The G4 includes programmable energy-management features.
Zip still provides technical guidance covering G4 settings such as:
- Energy modes
- Sleep settings
- Time and date
- Dispense controls
- Safety controls
- Shutdown procedures
Zip’s current technical support pages also still include guidance on turning a G4 HydroTap off and on before and after an extended absence.
For workplaces closing over Christmas or another extended period, it is worth following the correct shutdown and restart procedure rather than simply leaving the system unused.
When Should You Call a Zip HydroTap Engineer?
Professional support should be arranged where:
- The G4 repeatedly displays errors
- Boiling water is no longer reaching the expected temperature
- Chilled water stops cooling
- A leak develops
- Flow remains poor after filter checks
- CO2 replacement does not restore sparkling water
- Internal descaling is required
- Electrical faults occur
- Components need replacing
Because a HydroTap combines water, electricity, pressure and high temperatures, internal repairs should not be attempted by untrained users.
Should You Repair or Replace a Zip HydroTap G4?
A G4 does not need replacing simply because it is archived.
Repair may still make sense where:
- The system is generally reliable
- The fault is minor
- Compatible parts remain available
- Repair costs are reasonable
- Capacity still meets workplace demand
- Existing water options remain suitable
Replacement may be more appropriate where:
- Faults are becoming frequent
- Repair costs are increasing
- Parts are harder to source
- Workplace demand has increased
- More water functions are required
- The business wants newer hygiene or control features
The decision should be based on reliability, cost and suitability rather than age alone.
When Is It Time to Replace a Zip HydroTap G4?
There are several signs that replacement may be becoming more practical:
- Repeated engineer call-outs
- Expensive repairs
- Persistent leaks
- Frequent temperature problems
- Reduced reliability
- Limited component availability
- Increased staff numbers
- Greater demand for sparkling or chilled water
- A need for newer control or hygiene features
If several of these apply, investing in a newer system may provide better long-term value.
What Can Replace a Zip HydroTap G4?
Zip now positions its G5 HydroTap as the newer generation of the system.
However, a G4 replacement should not automatically be selected solely because it is the newest equivalent.
Before choosing a replacement, reassess what your workplace actually needs.
Consider:
- Number of users
- Peak demand
- Boiling water requirements
- Chilled water requirements
- Sparkling water requirements
- Worktop space
- Under-counter space
- Filtration
- CO2 requirements
- Servicing requirements
Zip highlights several differences between G4 and G5, including a newer command centre interface, CO2 level monitoring, additional hygiene-focused features, updated refrigerant technology and more dispensing options.
These may be useful benefits where an existing G4 is approaching the end of its practical life, but they do not mean a reliable G4 automatically needs replacing.
If you are comparing replacements, read our guide to choosing the right boiling water tap for your office.
What Information Should You Have Before Booking Support?
When contacting Wellbeing Group about a G4, provide as much information as possible, including:
- HydroTap model
- Serial number
- Approximate age
- Whether it provides boiling, chilled or sparkling water
- Description of the fault
- Any error displayed
- When the unit was last serviced
- Workplace location
This can help establish what support or parts may be required before an engineer visit.
How Wellbeing Group Can Help With Your Zip HydroTap G4
If your workplace still uses a Zip HydroTap G4, Wellbeing Group can help you determine whether servicing, repair or replacement is the most sensible next step.
Support may include:
- Preventative servicing
- Cleaning and sanitisation
- Filter replacement
- CO2 replacement
- Limescale management
- Fault diagnosis
- Repairs where practical
- Advice on replacement systems
If the G4 remains reliable, regular servicing can help keep it operating effectively.
If repair is becoming uneconomical, we can help compare newer workplace boiling water systems based on your required capacity, water options and available space.
