
Handheld
HH90C
Handheld Shower Filter Replacement Cartridge.
HH90C is the replacement cartridge fitted inside the HH901 shower handle. Keep the shower head and replace the cartridge when it is due.
- Cartridge model
- HH90C
- Compatible filters
- HH901
Turn off the water and follow the replacement steps supplied with your filter.
View compatible filters- Replacement interval
- 3–4 months
- Capacity reference
- 6,000 US gallons (approx. 22,700 L)
Made for
HH901.
Check the model before ordering
Use the cartridge model shown on this page for your HH901. The listing is for the replacement cartridge; the complete filter or shower head is a separate product.
How to replace it
- Turn off the water and unscrew the HH901 handle.
- Twist out the used HH90C cartridge and fit the replacement. Either end fits.
- Screw the handle back on and check for leaks.
Flush before use
Run warm water at 40–50°C (104–122°F) through the new cartridge for one minute. Adjust to a comfortable temperature before showering.
Read the HH901 illustrated guide ↗When to change your cartridge
Replace every 3–4 months or 6,000 US gallons (approx. 22,700 L), whichever comes first; sooner if water quality or use requires.
View the compatible HH901HH901 / HH90C
How to replace your cartridge.

- Turn off the water and unscrew the shower handle.
- Twist out the used HH90C cartridge.
- Insert the new HH90C cartridge with either end first.
- Screw the handle back on and check the connection.
Flush before use
After reassembly, run warm water at 40–50°C (104–122°F) through the filter for one minute to activate and flush the new cartridge. Adjust the water to a comfortable temperature before use.
Replace the cartridge every 3–4 months or after 6,000 US gallons (approx. 22,700 L), whichever comes first. Water quality and use may require earlier replacement.
