The Refrigerator: Monitor or Power Down
For shorter absences, most owners leave the Sub-Zero running and have a caretaker check it. For longer closures, consider emptying it, cleaning it, and either powering it down with the doors propped to prevent mold, or leaving it on with a wireless temperature alarm that texts if the compartment warms.
Whatever you choose, do not leave perishable food in an unmonitored unit. A slow refrigerant leak or a failed fan during your absence turns a full refrigerator into a cleanup job.
The Ice Maker and Water Lines
An unattended ice maker is the classic source of vacant-home damage. Shut off the water supply valve to the ice maker and refrigerator before you leave, and turn the ice maker off so it does not keep cycling against a closed valve. In homes at risk of freezing, this also protects the fill line.
The same logic applies to any plumbed appliance. Closing supply valves for weeks-long absences is cheap insurance against a slow drip becoming a flood.
The Dishwasher and Standing Water
Run the dishwasher empty on a normal cycle before you leave so it is clean, then leave the door slightly ajar to let the interior dry and prevent odor and mold. Check that it drained fully. A dishwasher left with standing water for weeks develops smell and can grow biofilm in the filter and pump.
If the home may freeze while unheated, a professional winterization that clears water from the dishwasher, ice maker, and lines is worth arranging.
Shutdown Checklist Before a Long Absence
| Appliance | Action | Reason |
|---|---|---|
| Refrigerator | Empty; monitor or power down | Prevent spoilage from a hidden fault |
| Ice maker | Turn off unit and supply valve | Stop cycling and prevent leaks |
| Water supply | Close valves to plumbed units | Avoid slow drips becoming floods |
| Dishwasher | Run empty, drain, prop door | Prevent odor, mold, standing water |
| Whole kitchen | Add a temperature alarm | Alert a caretaker if a unit warms |
A Caretaker Plan That Catches Problems Early
Even with a good shutdown routine, the best protection for a home that sits empty is a set of eyes and a temperature alarm. Ask a caretaker or property manager to walk the kitchen periodically and to respond if a wireless sensor reports a warming refrigerator or wine cabinet. Pair that with closed water valves and a drained dishwasher, and the two most damaging vacant-home events, a flood from a plumbed appliance and a box full of spoiled food, are both taken off the table before you ever leave.
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Frequently Asked Questions
Should I Turn My Sub-Zero Off When I Leave for the Winter?
Why Turn Off the Ice Maker Water Valve?
Can You Winterize the Kitchen Appliances?
Related Reading
Seasonal Maintenance for Mountain Homes
Keep equipment healthy year round.
Ice Maker Repair
Fill, harvest, and leak diagnosis.
Emergency Repair
Fast help for a warm fridge or a leak.