How to Replace Weddell Duo Filters

We recommend replacing filters every 5-6 months, though actual replacement frequency may vary based on water quality and usage. Tip: In areas with sediment-heavy or older plumbing systems, you may need to replace the white filter more frequently.

1. Check the Filter

Examine the white filter. Some discoloration, such as brown or gray buildup, is normal and indicates the filter is working. Replace the white filter when you notice heavy discoloration or a significant drop in water pressure, whichever occurs first.

2. Turn Off Water

Ensure the water supply is completely turned off at the shower faucet before proceeding with replacing any filter cartridges.

3. Remove Filter Housing

Gently twist the clear filter housing counterclockwise to remove the cartridge. It is advisable to hold the Weddell Duo unit in place while unscrewing to prevent the entire unit from loosening.

4. Replace Cartridge

Select the correct filter cartridge. Match each filter to its corresponding housing using the cap colors: use the red-capped filter for the black housing and the blue-capped filter for the white housing. Ensure both cartridges are properly seated before reattaching the housing.

5. Reattach Housing

Align each housing with its matching color and gently turn it clockwise until the assembly marks are horizontally aligned.

6. Flush System

Turn the water supply back on. Let the water run for approximately 3 minutes to flush out any residual buildup. Your Weddell Duo is now ready for use.

Performance Data Sheet

NSF/ANSI Standard 177 & 372

This system has been tested according to NSF/ANSI 177 for the reduction of free available chlorine and NSF/ANSI 372 for low lead content verification. The concentration of free available chlorine in water entering the system was reduced to a level less than or equal to the permissible limit for water leaving the system, as specified in NSF/ANSI 177. This system has not been evaluated for free available chlorine reduction performance in the presence of chloramines. Free available chlorine reduction performance may be impacted by chloramines in the water supply. Please contact your local water utility to determine if chloramines are used in your water.

Important Information

1. Minimum chlorine reduction per NSF/ANSI 177 is 50% free available chlorine (FAC) when used with an influent challenge water of 2 mg/L FAC. Average chlorine reduction for this system per NSF/ANSI is 87.0%.
2. To ensure continued performance as tested, use only genuine, NSF certified Weddell Duo Shower Filters (WD-100).
3. The actual capacity of your filter cartridge may vary based on the volume of contaminants present in your water supply. Replace the filter cartridge when the first of the following occurs: Every 5-6 months; Decreased water pressure and/or filter discoloration; or When the rated capacity of the filter cartridge has been reached.
4. Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system.
5. Installation must comply with all state and local laws and regulations. Refer to your local agencies for details.
6. The contaminants or substances removed or reduced by this system are not necessarily present in all users' water.
7. For warranty, installation, and operating instructions, please refer to the User Guide.
8. While testing was performed under standard laboratory conditions, actual performance may vary.
9. This system is not intended for use as a drinking water treatment unit.
10. For information on purchasing genuine, NSF certified Weddell Duo shower filters and cartridges, contact Weddell Water.

Contact Us

For additional assistance or questions, Weddell Water is available to help.

Email: support@weddellwater.com

Installation Guide: www.weddellwater.com/installation

Follow Us: @weddellwater

Weddell Water
3911 E. La Palma Ave. #H
Anaheim, CA 92807

Phone: (877) 740-8670

Manufactured in Korea. Version 1.3.

Weddell Water - STEP ZERO OF YOUR SELF-CARE ROUTINE™