What Causes Odor from My Kitchen Sink When I Run My Front Load Washing Machine and How Do I Fix It?

When your front load washing machine drains, it can sometimes create a vacuum that sucks water from the kitchen sink's P-trap, allowing sewer gases to escape. This can cause an unpleasant odor in the kitchen.

How to Fix It:

  • Check the P-trap: Make sure that the P-trap under the kitchen sink is filled with water. If it's not, pour water into it to create a water seal, blocking sewer gases.
  • Inspect the Drain Hose: Ensure that the washing machine's drain hose is properly attached to the kitchen sink drainpipe. A loose or disconnected hose can allow air to enter the sink, causing an odor.
  • Flush the Drain: Run hot water through the kitchen sink for several minutes to flush out any food particles or debris that may be trapped in the drain.
  • Clean the Washing Machine Filter: A clogged washing machine filter can restrict water flow, causing the machine to drain more slowly and create a vacuum. Clean the filter regularly to prevent odor problems.
  • Use a Drain Cleaner: If the odor persists, you can use a commercial drain cleaner to dissolve any organic buildup in the pipes. Follow the instructions on the product carefully.
  1. Why does my washing machine smell bad when it drains? Drainage problems or a clogged filter can trap water and create an environment for bacteria growth.
  2. Can a washing machine drain into a sink? Yes, with a proper hose connection and a vent hose to prevent pressure build-up.
  3. Is it OK for washing machine to drain into kitchen sink? Yes, it's a common practice, but it's important to ensure proper ventilation and odor control.
  4. Why does my kitchen sink smell like sewage when I run the dishwasher? The dishwasher can create a suction that pulls water from the sink's P-trap, allowing sewer gases to enter.
  5. How do you fix a smelly kitchen sink? Check the P-trap, drain hose, and washing machine filter. If necessary, flush the drain or use a drain cleaner.
  • Whirlpool Front Load Washing Machine
  • Delta Kitchen Sink Faucet
  • OdoBan Drain Cleaner
  • P-Trap Cleaner Tool
  • Maytag Top Load Washing Machine

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