
Why Is My Thermador Dishwasher Leaking from the Bottom?
Noticed a puddle forming under your Thermador dishwasher? A leak from the bottom can be more than just an annoyance—it could be a warning sign of a bigger issue. Let’s break down the most common causes and what to do about them.
What causes a Thermador dishwasher to leak from underneath?
Several issues might be behind the leak:
Worn door gasket: If the rubber seal around the door is cracked or loose, water can seep out during the wash cycle.
Clogged or damaged spray arm: If it’s spraying water in the wrong direction, it may push water past the seals.
Leaky pump seal or motor: Over time, these components can wear out and drip water onto the floor.
Loose or cracked hoses: Internal hoses can split or disconnect, especially after years of use.
How do I check for a leak in my dishwasher?
Pull out the dishwasher slightly and look underneath with a flashlight.
Inspect the hoses and seals for visible cracks, buildup, or water trails.
Run a short cycle and watch for where water begins to pool.
Make sure to unplug the unit and shut off the water before doing any checks!
Can I fix a leaking Thermador dishwasher myself?
Minor leaks like a dirty door gasket can often be cleaned or replaced by hand. However, issues like a faulty pump, motor seal, or internal hose should be handled by a professional. Attempting DIY repairs without proper tools can lead to more damage.
Conclusion

A leaking Thermador dishwasher isn’t just messy—it could lead to water damage or mold if ignored. If you spot water pooling from the bottom, check seals, spray arms, and hoses first. And when in doubt, don’t wait. Texcen Appliance Repair is here to tackle the tough leaks and get your dishwasher running dry and clean again.
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