Problem Cause
Water Temperature Too Low
Brewing water is below optimal temperature, reducing extraction efficiency
How to Identify This Issue
- 1Machine not fully heated
- 2Sour, underdeveloped flavors
- 3Single boiler after steaming
- 4Cold ambient environment
- 5First shot of the day issues
Visual Cues
Ground texture and uniformity
Puck surface and distribution
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Solutions for Water Temperature Too Low
Preheat Machine Properly
Allow your espresso machine to heat for at least 20-30 minutes. Run water through the group head before your first shot.
Expected Result
Stable brewing temperature, more consistent extraction, better flavor development.
Flush Group Head
Run 2-3 seconds of water through the group head before inserting your portafilter. This stabilizes temperature.
Expected Result
More consistent temperature, especially important for single boiler machines.
Adjust Water Temperature
If your machine allows, adjust brewing temperature. Try 92-96°C for most coffees. Light roasts prefer higher, dark roasts lower.
Expected Result
Better flavor balance, reduced sourness or bitterness depending on adjustment direction.