One tap or
the wider home?
Both approaches have a place. The useful question is where you want treatment—and what you need that treatment to do.
Two approaches. One informed decision.
Under-sink
Installed near a selected kitchen outlet, usually for drinking and cooking water. Cabinet space, tap configuration and cartridge access matter.
Whole-house
Installed at the water entry point to serve connected outlets. Location, pipe routing, peak demand and maintenance access shape the installation.
A combined setup
A whole-house system and a kitchen system can be used together for different purposes. More equipment is only useful when it addresses a clear need.
Compare at a glance.
| Consideration | Under-sink | Whole-house |
|---|---|---|
| Coverage | Selected drinking-water outlet | Connected outlets after the entry point |
| Placement | Kitchen cabinet / nearby plumbing | Main water entry / suitable service area |
| Typical priority | Drinking and cooking water | Treatment across several uses |
| Planning | Tap choice, cabinet space, access | Peak flow, location, plumbing access |
| Maintenance | Model-specific cartridge changes | Model-specific cartridge changes |
| Hardness treatment | Not automatic | Not automatic |
Choose by priorities.
Compare the full cost.
Coverage and treatment strength are separate questions. A kitchen system may target substances that a whole-house model does not—and vice versa.
If drinking water is your focus.
Start with a suitable point-of-use option and its documented treatment claims. There is no need to assume the entire home needs treatment for a single-tap preference.
If the concern affects several outlets.
Discuss a whole-house approach and verify that its treatment matches the concern. Wider coverage does not automatically mean softening or removal of every contaminant.
If comparing quotes.
Compare installation, any required tap or cabinet work, cartridge costs and service arrangements. Under-sink systems can have multiple cartridges; cost depends on the actual models.
Your questions,
answered clearly.
Can I use both systems?
Yes, when there is a reason for each stage. Ask how the two systems complement one another and what maintenance each requires.
Which is better value?
The best fit is the one that addresses your priorities at a manageable installed and ongoing cost. Compare written quotes and replacement schedules.
Is under-sink installation always DIY?
No. Suitability depends on the product, plumbing work and local requirements. Confirm installation arrangements with an appropriately qualified professional.
Does whole-house filtration remove hardness?
Only if the selected treatment is designed for it. Do not assume a standard carbon or sediment system is a softener.
A clearer picture of your water.
Let’s find your
right water setup.
Tell us about your supply, your home and what you would like to improve. We’ll help you compare the next steps.