



I set the subscription and forget it. A fresh one shows up right when the old one's done.
Halo Shower Filter Replacement Cartridge
The filter inside your shower head wears out after about three months of hot water. Drop in a fresh cartridge and the chlorine, smell, and dry-skin protection come right back. Same five-second swap, no tools.
How you know it's time for a fresh one
A cartridge filters roughly three months of hot showers before the media is spent. On a subscription it just shows up on schedule, so you never have to track it. Not subscribed? These are the tells.
The pool smell is back
If you can smell chlorine in the shower again, the carbon is saturated and isn't holding it anymore.
Skin feels tight again
That dry, tight feeling after a shower creeping back is the clearest sign the filter is done.
It's been ~90 days
The simplest tell. Mark the date you installed it, or let the subscription do the counting for you.

The same media that made the difference
Your replacement isn't a watered-down version. It's the exact two-stage media in the original head, packed fresh so the protection comes back to full strength.
- KDF-55 copper-zinc. Pulls chlorine out through a redox reaction, the stage carbon-only filters miss in hot water.
- Activated coconut carbon. Catches the chloramine, the smell, and the byproducts that dry out skin and hair.
- Full pressure, always. Engineered for flow, so a fresh cartridge never turns your shower into a trickle.
Swapping it is easier than the first install
Unscrew the face
Twist off the front of the shower head by hand. The old cartridge lifts straight out.
Drop in the new one
Set the fresh cartridge in the same spot. It only seats one way, so you can't get it wrong.
Twist back on
Hand-tighten the face and run the water for ten seconds. Filtered shower, back to full strength.
Quick answers before you reorder
Does this fit my clnwater shower head?
Yes. It's the one cartridge made for the clnwater Halo Filtering Shower Head, so it drops straight in. It won't fit other brands' heads.
How often do I really need to replace it?
About every three months for an average household. Heavier use or harder water can shorten that. The subscription is set to every 3 months so you stay covered without thinking about it.
What's the difference between subscribe and one-time?
Same cartridge. Subscribing saves you 15% ($20.40 vs $24) and ships a fresh one every 3 months automatically. You can skip a shipment or cancel in one click, anytime.
Can I cancel or change my subscription?
Whenever you want, no email or phone call needed. Manage it yourself from your account: skip, reschedule, or cancel in a couple of clicks.
What if I bought the whole system?
The shower head in the system uses this exact cartridge. Add a subscription here so the filtered shower keeps working long after the first cartridge is spent.