Dimplex
Corrosion / Internal Tank or Exchanger Degradation
Water has a metallic or rusty color when using hot water
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Corroded steel components, Failing sacrificial anode (if fitted), Old or degraded heat exchanger, High iron content in supply water
How to Fix / Troubleshooting
Safety: Discolored water is usually not an immediate hazard but indicates internal wear.
- Flush system: Run hot water for several minutes to see if discoloration clears. If it does, sediment may be present.
- Check anode (if applicable): On storage-type Dimplex heaters with anodes, inspect and replace the sacrificial anode if heavily consumed.
- Water test: Test incoming cold water for iron content. If high, consider filtration.
Note: Persistent rust-colored water from the heater may indicate internal corrosion and the need for exchanger or tank replacement.
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Repair Difficulty
Hard
4/5
Required Part
Heat Exchanger / Tank Anode
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