Calphalon Low Brew Temperature

Brewed coffee is not hot enough, even immediately after brewing.

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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

Thermostat out of calibration, Scale on heating block reducing heat transfer, Faulty temperature sensor, Control board limiting heater output

How to Fix / Troubleshooting

Safety first: Use caution when testing temperature; hot coffee can scald.

  • Preheat carafe: Rinse the carafe with hot tap water before brewing to reduce heat loss.
  • Descale the machine: Run a full descale cycle with a 1:1 vinegar and water solution to remove scale that insulates the heating block.
  • Check brew size: Very small brew volumes can cool quickly; test with a full pot.
  • Measure temperature: If possible, measure the coffee temperature immediately after brewing. It should typically be around 175–185°F (79–85°C). Significantly lower temperatures indicate a heating issue.
  • If still too cool: The thermostat, thermistor, or control board may be faulty and require professional replacement.
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Repair Difficulty

Medium 3/5

Required Part

Brew Thermostat / Thermistor
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