How long can you leave a freezer unplugged? A freezer that remains unused for more than a year may develop some issues. To counteract this, consider running the freezer periodically, even if it's empty. This practice helps maintain an optimal internal temperature and prevents the compressor from becoming stagnant.
A full freezer will hold a safe temperature for approximately 48 hours (24 hours if it is half full and the door remains closed). Food may be safely refrozen if it still contains ice crystals or is at 40°F (4°C) or below, however, its quality may suffer. Never taste food to determine its safety.
Damages the Compressor and Rubber Seals
Refrigerators are equipped with a compressor that circulates the refrigerant thus, maintaining the desired temperature. Prolonged periods without operation can cause the compressor to malfunction or even fail.
Fridges and freezers use a lot of energy, but it's important that they are kept running to prevent food from spoiling. Plus, a warm fridge/freezer will leak water which is a potential fire hazard. So, if you have a full fridge/freezer, it's best not to turn it off.
Changes in temperature in an unheated garage can be hard on these appliances. "You need to make sure that the unit is not exposed to temperatures above 110° F or below 0° F, because that may damage the freezer," says Larry Ciufo, a CR project leader who tests large appliances.
Because the compressor is on the exterior of the unit, exceptionally cold temperatures may cause a build-up of ice or reduce the viscosity of the oils used to lubricate moving parts. Any of these may result in compressor failure or malfunction resulting in a costly repair.
The freezer stops working when outside temperatures are in the 30s/40s because the thermostat that turns on the compressor is actually measuring the frig temp, not the freezer temp.
Even when not in use at night, it is best left plugged in to preserve the quality of the food stored inside.
Keep fridge and freezer doors closed as much as possible
Your fridge should stay cold for up to 4 hours. The food in your freezer should stay frozen for up to 48 hours in a full freezer (or 24 hours if it's half full), but these are estimates. Fridge and freezer temperatures will vary depending on their make and model.
It might sound strange to think but a freezer shouldn't run all the time because if it does it will actually build-up to much ice. This can make your freezer to cold and will make opening it and then closing it a problem, it will also be sure to put more stress on the motor.
Keep the refrigerator and freezer doors closed as much as possible to maintain the cold temperature. The refrigerator will keep food cold for about 4 hours if it is unopened. A full freezer will keep the temperature for approximately 48 hours (24 hours if it is half full) if the door remains closed.
Unfortunately there is no way to turn the freezer off without doing the same to the fridge.
The good news is that it doesn't ultimately matter much whether you keep your freezer full or empty. The exception is if you live in an area where power outages are common: if that's you, you'll want to keep your freezer full to help keep foods cold longer when you lose electricity.
After you unplug your appliance, leave the door open and wait for the ice to melt on its own. If you want to expedite the melting process, you can put a fan near your freezer to help it defrost. Open the freezer door and position the fan so that air circulates into the freezer.
The first is pretty simple – leave the doors open. You don't need them open a lot, you can just jam a rag in between the freezer and fridge door and leave it cracked a little.
The majority of the energy your freezer uses goes towards cooling down the air that comes in when you open the freezer door. When your freezer is full, there is less room for warmer air to take up, and the items that are in there help to cool down any air that does sneak in. So keeping it full means less energy used.
A full freezer will stay at a safe temperature for about 48 hours. Monitor temperatures with a thermometer. Bacteria in food grow rapidly at temperatures between 40 and 140°F and if you consume these foods, you can become very sick.
If you are going away for a month or longer, it is a good idea to unplug your refrigerator to save energy. Empty your refrigerator, drain the water tank if you have one, clean the inside of the appliance and leave the doors open to avoid any unwanted odours.
Safety of Specific Food Products
Hard cheese, butter and margarine: Well packaged products should remain safe; if odors or mold develops, discard the items. Milk products and mayonnaise: Discard if held above 40ºF for more than 2 hours. This category includes milk, cream, yogurt, and soft cheeses.
How long can you leave a freezer unplugged? A freezer that remains unused for more than a year may develop some issues. To counteract this, consider running the freezer periodically, even if it's empty. This practice helps maintain an optimal internal temperature and prevents the compressor from becoming stagnant.
Normal Cycling Patterns
So, how often should a fridge/freezer cycle on and off? On average, most refrigerators run for about 45 minutes to an hour before taking a break. This means the compressor is actively cooling your food for around 80–90% of the day.
If it is transported upright, wait at least two to three hours before plugging it in. If transported on its side, turn it upright and let it stand for at least four hours.
For items kept in the freezer, you'll have more time as long as the door stays closed. The USDA said a half-stocked freezer should keep food safe for 24 hours while a fully-stocked freezer can go for up to 48 hours.
If the garage space is uninsulated or too cold, the freezing temperatures will trick the freezer into thinking it has reached the desired level of refrigeration and it may fail to turn on, which could result in damage to the unit and food spoilage.
Changes in temperature in an unheated garage can be an issue. You will need to make sure that the unit is not exposed to temperatures over 43C or below -17C because it could damage the fridge freezer. This is a very delicate balancing act that would benefit from being in a garage with a heating or cooling system.