Dishwasher Not Getting Hot Water? Simple Troubleshooting Guide

If your dishwasher is not getting hot water, you’re likely facing issues with cleaning your dishes properly. This common problem can be a source of frustration, but with the right approach, it is entirely solvable. In this guide, we’ll provide a comprehensive, step-by-step explanation to help you identify the issue and resolve it.

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Check the Water Heater

You should begin by checking the water heater in your home. Ensure that it’s set to the right temperature and functioning properly.

  1. Turn off the water heater’s power supply.
  2. Verify the thermostat setting, typically between 120°F and 140°F.
  3. If the setting is incorrect, adjust it and test the dishwasher again.

For more articles on dishwasher problems, click here: Dishwasher Problems and Solutions: Your Ultimate Guide to Hassle-free Dishwashing

Inspect the Dishwasher’s Water Inlet Valve

The water inlet valve controls the flow of hot water into your dishwasher. If this valve is faulty, it may be the cause of the issue.

  1. Unplug the dishwasher from the electrical outlet.
  2. Locate the water inlet valve and inspect it for damage or clogs.
  3. If you find any issues, replace the valve or clean it as needed.
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Here’s how to replace a dishwasher water inlet valve:

  1. Disconnect Power and Water Supply:
    • Turn off the dishwasher and unplug it from the electrical outlet.
    • Turn off the water supply valve that feeds the dishwasher.
  2. Access the Inlet Valve:
    • Open the dishwasher door and remove the lower rack.
    • Depending on your model, you may need to remove the kickplate or toe panel (located beneath the door) by unscrewing it.
    • Locate the water inlet valve; it’s usually near the front-left or right side, and it’s where the water supply line connects.
  3. Disconnect the Water Supply Line:
    • Place a towel or small container under the valve to catch any residual water.
    • Use an adjustable wrench to disconnect the water supply line from the valve.
  4. Disconnect the Wiring and Hose:
    • Carefully disconnect the electrical connector from the valve.
    • Disconnect the fill hose that runs from the valve to the dishwasher (this may require a screwdriver or pliers).
  5. Remove the Old Valve:
    • Unscrew the mounting screws that hold the valve in place.
    • Carefully remove the old valve.
  6. Install the New Valve:
    • Position the new valve in place, lining up with the mounting holes.
    • Reattach the mounting screws.
    • Connect the fill hose to the new valve and secure it with a clamp if necessary.
    • Reconnect the electrical connector.
  7. Reconnect the Water Supply Line:
    • Reconnect the water supply line to the new valve, ensuring a secure connection.
    • Turn on the water supply valve and check for any leaks around the connections. Tighten as necessary.
  8. Reassemble the Dishwasher:
    • Replace the kickplate or toe panel and secure it with screws.
    • Place the lower rack back in the dishwasher.
  9. Test the Dishwasher:
    • Plug in the dishwasher and run a short cycle to test the new valve.
    • Carefully check for any leaks during the cycle.
  10. Final Check:
  • If everything is functioning properly, your job is done!
  • If you notice any issues, turn off the dishwasher and consult a professional technician.
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This guide is a general outline, and variations can exist between different dishwasher models. Always consult your dishwasher’s manual or a professional if you are unsure about any part of this process.

Examine the Heating Element

Your dishwasher’s heating element may be the culprit if it’s not getting hot water. Here’s how to investigate this potential problem:

  1. Disconnect the dishwasher from the power supply.
  2. Inspect the heating element for signs of wear or damage.
  3. Replace the heating element if necessary, following the manufacturer’s instructions.

Here’s how to replace a dishwasher heating element:

1. Disconnect Power

  • Unplug the dishwasher or switch off the circuit breaker to completely disconnect the power. Confirm that the power is off by attempting to turn on the dishwasher.

2. Inspect and Gather Tools

  • Refer to your user manual to determine the exact location and type of heating element.
  • Gather necessary tools such as a screwdriver, a wrench, and a multimeter.

3. Remove the Dishwasher’s Lower Panel

  • Remove the screws or fasteners securing the lower access panel or toe kick plate.
  • Take off the panel to reveal the heating element connections.

4. Disconnect the Heating Element

  • Locate the heating element terminals or wiring, often found near the base of the dishwasher.
  • Disconnect the wires from the terminals, taking note of their placement for reconnection.

5. Remove the Heating Element

  • Open the dishwasher and remove the lower rack.
  • Locate and unscrew the nuts or fasteners holding the heating element in place.
  • Carefully lift out the heating element, taking care not to damage any other components.
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6. Test the Element (Optional)

  • If you want to confirm that the heating element is faulty, you can use a multimeter to test it for continuity. A lack of continuity indicates a defective element.

7. Install the New Heating Element

  • Position the new heating element in place, aligning it with the mounting brackets or holes.
  • Secure it with the nuts or fasteners.
  • Reconnect the wires to the terminals, following the same pattern as before.

8. Reassemble the Dishwasher

  • Replace the lower rack.
  • Reattach the lower access panel or toe kick plate.
  • Plug in the dishwasher or switch the circuit breaker back on.

9. Test the Dishwasher

  • Run a short cycle to confirm that the heating element is working correctly. Check for any leaks or issues.


Always follow the instructions provided in the user manual for your specific dishwasher model, as there may be special procedures or tools required. Safety should be your priority; if you’re unsure at any stage, don’t hesitate to contact a professional technician.

Dishwasher Not Getting Hot Water: Contact Professional Help

If you’ve attempted the above steps without success, it may be time to contact a professional technician. They will have the expertise to diagnose and fix the issue safely.