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Frequently Asked Questions
What does the phosphate actually do?
It binds to the hardness minerals.
Keeping them dispersed in the water.
Rather than crystallising on hot surfaces.
So they leave with the water.
Instead of depositing inside equipment.
So the water stays hard?
Exactly as hard as it was.
Nothing has been removed.
It will still mark shower glass.
Still need the same detergent.
And still read hard on a test.
Where do buyers most often go wrong?
Expecting softener results.
Because the word scale suggests them.
This protects equipment only.
It does not soften anything.
The two are different products.
How is the dose controlled?
Passively, in proportion to flow.
Water passing the media dissolves a little.
So more flow means more dose.
Which is what protection needs.
No pump or control is involved.
How do I know when to replace it?
On a schedule, not on a symptom.
Output falls as the media depletes.
Gradually, and invisibly.
There is nothing to see or taste.
So the interval is the only guide.
Where does it work best?
Protecting one valuable appliance.
A combi boiler or water heater.
A coffee machine or steam oven.
A small cartridge on its feed.
Protects an expensive heat exchanger cheaply.
Is it suitable for a whole building?
Usually not the right tool.
The dose and the duty do not scale well.
A softener or conditioning system fits better.
Use this at the appliance.
Not at the incoming main.