Symptoms
- Fewer cubes per cycle than before
- Longer time between batches
- Cubes look normal in size and shape, just less frequent
- Started gradually rather than suddenly
Likely causes
- CommonWater filter nearing the end of its lifeReduced flow from a clogging filter slows each fill without stopping it completely.
- CommonFreezer temperature slightly elevatedA few degrees warmer than ideal can meaningfully slow the freeze time per cycle.
- PossibleReduced household water pressureSeasonal or plumbing changes can lower pressure enough to slow fills.
- PossiblePartially blocked or narrowing water lineMineral buildup inside older plastic tubing can gradually restrict flow.
- Less commonAging ice maker mechanismOlder units can simply slow down as motors and components wear.
What to do
- Replace the water filter even if it's not overdue by the calendar, since usage varies household to household.
- Verify the freezer temperature is at or near 0F with an independent thermometer.
- Check the water line for kinks or signs of narrowing, especially if it's old plastic tubing.
- Test water pressure at a nearby faucet to rule out a household plumbing issue.
- Give the unit a few days after a filter change before judging whether speed has improved.
- If speed doesn't improve and the unit is many years old, factor in that ice maker mechanisms do wear out over a decade or more of use.
Tools and parts
- Thermometer
Refrigerator water filterSearch: “refrigerator water filter replacement”
When to call a pro
If ice production stays slow after a filter change and confirmed good temperature and pressure, an appliance technician can evaluate the ice maker mechanism.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.