November 13, 2023

How to Replace the Water Filter in a Thermador Refrigerator

Replacing the water filter in your Thermador refrigerator is an essential maintenance task you shouldn’t overlook. Manufacturers recommend you replace your fridge’s water filter every 6 months to ensure the refrigerator's ice and water is contaminant and odor free; replace it more frequently if you notice the water flow slowing.

Thermador offers a wide variety of refrigerators, and the water filters used vary by model. Learning how to change the water filter in your Thermador refrigerator will depend on the refrigerator style you have, the location of the water filter in your refrigerator, and the filter part number. If you’re unsure what filter goes in your Thermador refrigerator, use the filter finder in our Thermador refrigerator water filter collection.

The tables below list the Thermador water filter part numbers by refrigerator style, with links to step-by-step instruction videos. Read on to learn how to replace the water filter in your refrigerator.

How to change the water filter in a Thermador side-by-side refrigerator

Filter number	Removal method	Location	How-to video
00640565	Open tray and twist out	Inside top-right	How to replace an open-tray-and-twist-out water filter

How to change the water filter in a Thermador French 3-door refrigerator

Filter number	Removal method	Location	How-to video
00644845	Twist to remove	Bottom grille	How to replace a twist-to-remove water filter

How to change the water filter in a Thermador French 4-door refrigerator

Filter number	Removal method	Location	How-to video
11034151	Open tray and twist out	Inside top-right	How to replace an open-tray-and-twist-out water filter

How to change the water filter in a Thermador bottom freezer refrigerator

Filter number	Removal method	Location	How-to video
12004484	Twist to remove	Inside top-right	How to replace a twist-to-remove water filter

Step-by-step instruction by Thermador part number

How to replace an open-tray-and-twist-out water filter

The open-tray-and-twist-out Thermador water filters are 00640565 and 11034151.

Release the locking tab and lower the cover of the tray.
Twist the filter to the left until it stops, then pull it out.
Insert the new filter and twist it to the right until it stops.
Close the tray’s cover.
Run 2 gallons of water through the water dispenser to purge air and residue.
Reset the water filter replacement reminder light.

How to replace a twist-to-remove water filter

The twist-to-remove Thermador water filters are 00644845 and 12004484.

Twist the filter to the left and pull it out of the housing.
For filters in the grille, use the decorative filter cap from the old filter on the new filter.
Line up the new filter, push it into the filter housing and twist the filter to the right.
Wipe up any spills.
Run 2 gallons of water through the water dispenser to purge air and residue.
Reset the water filter replacement reminder light.

Installing and replacing an external in-line water filter

If your refrigerator doesn't have a built-in water filter, you can add one in the water line behind the refrigerator. See how easy it is to install or replace an inline water filter using Kenmore water filter 3844609 or 3844709.

Looking for DIY repair advice to fix a problem with your refrigerator? Check out our refrigerator repair help page for symptoms and troubleshooting tips, error codes and repair guides.

If you’re having problems removing your old filter or installing the new one, check out our video How Do You Remove a Stuck Water Filter.