Is it normal for refrigerator temperature to fluctuate?

Asked By: Polonia Burralde | Last Updated: 24th February, 2020
Category: home and garden home appliances
4.4/5 (278 Views . 41 Votes)
The *air* temperatures in both compartments will fluctuate. The refrigerator is designed to cool *food* which will maintain a more even overall temperature longer than just short fluctuations of air temperature will be able affect.

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Thereof, what causes refrigerator temperature to fluctuate?

Fluctuations above and below these normal operating temperatures can be caused by the automatic defrost cycle, cycling of the compressor and opening of the fresh food and freezer compartment doors. A freezer thermostat controls the cycling of the compressor in conjunction with an Adaptive Defrost Control board.

Subsequently, question is, do refrigerator temps fluctuate? The *air* temperatures in both compartments will fluctuate. The refrigerator is designed to cool *food* which will maintain a more even overall temperature longer than just short fluctuations of air temperature will be able affect.

Furthermore, is it normal for freezer temperature to fluctuate?

If there is not much of a load (food) in the freezer, every time it goes into a defrost cycle, the temperature will get very high. This is because there is not enough in it, to hold the temperature down. In this case, simply add more food or just some ice to the freezer. The defrost timer can also be the cause.

Is the temperature in a fridge constant or does it vary throughout the fridge?

First things first: the temperature in your fridge isn't constant. The fridge is cooled by a gas, known as refrigerant vapour, which flows in liquid form inside a coil in the fridge and absorbs heat in the air.

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What is the ideal refrigerator temp?

“The ideal refrigerator temperature is 35° F (1.6° C). You're not hugging the danger zone like you would be at 40° F (4.4° C), and you're distancing yourself sufficiently from 32° F (0° C) that you don't freeze half the stuff in your refrigerator,” says Stack Exchange's hobodave.

Is 8 degrees too warm for a fridge?

Usually located at the top of the fridge door, some maintain temperatures around 8°C. But these foods can also be kept at colder temperatures, so it is possible to move them out in favour of foods such as green beans, which also like a warmer temperature.

Is 46 degrees too warm for a refrigerator?

It should be at or below 40 degrees F to slow bacterial growth, but you can't know it's cold enough unless you use a thermometer. As many as 43 percent of home refrigerators have been found to be at temperatures above 40 degrees F, putting them in the food safety “danger zone” where harmful bacteria can multiply.

What temp should a fridge and freezer be?


Keep the refrigerator temperature at or below 40° F (4° C). The freezer temperature should be 0° F (-18° C). Check temperatures periodically. Appliance thermometers are the best way of knowing these temperatures and are generally inexpensive.

Why does my temperature fluctuate so much?

This fluctuation can occur for a number of reasons. For example, if you're quiet and relaxed, your body temperature may drop a bit. Bacterial infection can also cause the body temperature to rise. In fact, it's one of the most common causes of increased body temperature.

Is 45 degrees too warm for a refrigerator?

The USDA says refrigeration temperature should be 40°F (4.4°C) or below. If food is in there at a higher temperature (such as the 43-45°F the question mentions), for longer than 2 hours, and they're saying the food isn't safe.

What number should Fridge be on in summer?

The settings on the fridge temperature dial show refrigerant power. Normally the numbers range from one to five. Number one is the least cool setting and number five the coldest. When your fridge is always full you need to select a number four setting.

What is the correct temperature for an upright freezer?

Kitchen Fact: The ideal temperature range for your freezer is 0° Fahrenheit or below (-18° Celsius or below). Food stored at 0° Fahrenheit or below is safe to eat indefinitely (although quality and taste may be compromised after a while).

What makes the temperature reading using the thermometer fluctuate up and down?


It's made up of two different metals bonded together, which expand by different amounts as they heat up. As the temperature changes, the bimetallic strip curves more or less tightly (contracts or expands) and the pointer, attached to it, moves up or down the scale.

Does an upright freezer need to be level?

The freezer must have all bottom corners resting firmly on a solid floor. It is VERY IMPORTANT for your freezer to be level in order to function properly. If the freezer is not leveled during installation, the door may be misaligned and not close or seal properly, causing cooling, frost or moisture problems.

How warm should freezer get during defrost?

The temperature increase in the freezer section during a defrost cycle varies. It can rise as much as 25-30 degrees but only for a very short time. The defrost cycle can start anywhere between 9 and 99 hours and lasts about 20 minutes.

How long will food last at 50 degrees?

When in Doubt, Throw it Out!
Type of Food Held above 40 °F for more than 2 hours
Meat, poultry, seafood
Sauces, Spreads, Jams
Opened mayonnaise, tartar sauce, horseradish Discard (if above 50 °F for more than 8 hrs)
Peanut butter Keep

How do I know if my fridge is cold enough?

A thermometer is the only reliable way to check the temperature. Place a refrigerator thermometer in the center of the middle shelf (not on the door). And remember to check it often to make sure the temperature is right.

How do I measure the temperature of my fridge?


Instead, simply place the thermometer in the freezer between two pieces of already frozen food in the center of the freezer cabinet. You can also place the thermometer in ice cream. Close the door and wait at least 12 hours to allow the thermometer to get a reading.

How long does it take to reset a refrigerator?

Unplug the refrigerator cord from the wall outlet. Leave unplugged for around two or three minutes.

Why is my fridge temp rising?

Evaporator Fan Motor
If the fan is defective, then temperatures in the freezer section will rise slowly and temperatures in the fresh food section will rise more rapidly and the compressor will run longer and more frequently than normal.