Thermador Refrigerator Leaking Water? Check These 5 Things.

Refrigerator leaks typically have several common causes, even in high-end luxury brands. Why is my Thermador refrigerator leaking water? The water inlet hose may not be securely connected. Check these 5 things to troubleshoot a leaky Thermador refrigerator and prevent bigger messes.

How to Fix a Thermador Refrigerator Leaking Water

Pinpointing the source of leaks is the first step to fixing them. In most cases, once the cause is determined, a Thermador refrigerator leaking water can be stopped with a DIY fix or simple adjustment. 

1. Refrigerator Is Not Level

When the refrigerator isn’t level, leaks commonly occur underneath or behind the unit. If it wobbles or a carpenter’s level shows it doesn’t sit evenly on the floor, a Thermador refrigerator leaking water likely isn’t level. Fortunately, most refrigerators have leveling legs that can be easily adjusted so they rest squarely on the floor.

If your refrigerator has a lower grille, unscrew it to access the legs. Turn them clockwise to raise the refrigerator or counterclockwise to lower it. Use a carpenter’s level to confirm that the refrigerator is leveled properly before replacing the grille.

2. Leak in the Water Supply

Why does my refrigerator leak water from underneath? Water supply issues are another common reason for leaks at this location. The refrigerator’s water line connects to your home water supply, providing the unit with water for drinking and/or ice production. A water inlet valve opens and closes to allow water to flow through the line from your home supply. Several issues can cause either component to develop leaks. 

Here’s how to assess for water supply leaks:

  • Check for kinks and damage: The water line is a flexible plastic tube that can be subject to kinks if the refrigerator is too close to the wall. Move the refrigerator to inspect the line, gently straightening any kinks. If the water line has a crack or hole that’s causing the leak, it must be replaced.
  • Inspect line connections: If the water line’s connection to your home water supply or water inlet valve is loose or incorrect, leaks can occur at these fittings. Tighten the water line’s connections and make sure they’re fitted properly.
  • Assess water inlet valve: If the water line is free of damage and securely connected, check the water inlet valve to make sure it’s functioning properly. Leaks can occur from the valve if it’s cracked or insecurely connected to the water line. While the valve can be tightened to fit properly, it requires professional replacement if damaged.

3. Check Water Filter for Leaks

A faulty water filter is often responsible for a Thermador refrigerator leaking water inside or from the dispenser. The water filter screens out contaminants from your home water supply but must be functioning and fitting properly to prevent leaking.

thermador refrigerator leaking water
Image from Thermador

These issues can result in a Thermador water filter leak:

  • Damage: Cracks or holes in the filter head or housing can cause leaks, necessitating immediate replacement.
  • Incorrect installation: If the filter isn’t installed properly, leaks can occur within the filter housing. Refer to your user manual to review the filter installation procedure for your model refrigerator.
  • Wong filter used: Using a generic filter can result in an imprecise fit or reduced function, causing leaks. Always replace the filter with the OEM brand specified in your user manual.

4. Refrigerator Defrost Drain Clogged

A Thermador refrigerator defrost drain transports excess water from the defrost system to the drain pan, where it evaporates. Sometimes, food particles or ice can clog the drain, resulting in leaks underneath the refrigerator or behind the produce drawers.

To remove the clog, check your user manual to confirm the location of the drain on your model refrigerator. If ice is causing the clog, manually defrosting the refrigerator or flushing the drain with hot water can melt the blockage. For clogs caused by food particles or debris, mix a solution of warm water and baking soda and use a turkey baster to flush the drain.

5. Drip Pan Is Leaking

The drip pan collects excess water from the defrost system, where it eventually evaporates with the aid of the evaporator fan. However, if the pan is incorrectly installed or damaged, water will leak from the bottom of the refrigerator before it can evaporate.

Remove the drain pan from the bottom of the refrigerator and inspect it for cracks or holes that can cause leaks. If damaged, a Thermador refrigerator drip pan must be replaced. If there’s no visible damage, refer to your user manual to make sure the pan is properly installed. Lastly, if the pan is damage-free and installed properly, excessive water could indicate a defrost system problem. This issue should be assessed by a professional refrigerator repair service.

Whether you need refrigerator organization tips or an expert repair, the team at Conner’s appliance can help. Contact us for all your refrigeration questions or concerns!

Dylan Conner

Dylan Conner

Dylan Conner is a business owner and entrepreneur. He grew up doing appliance repair every vacation with his dad. In 2003, he took over the business with just a truck, cell phone, and himself. Dylan now owns Conner's Appliance. Conner's Appliance employs 10 technicians and services Fresno, Hanford, Visalia, Monterey, Santa Cruz, and Salinas areas.

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