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Refrigerator: 37°F to 40°F (3°C to 4°C)

Freezer: 0°F (-18°C)

These temperatures slow bacterial growth in the fridge and keep frozen foods safe from spoilage in the freezer. Anything warmer and your food could become unsafe; anything colder and you risk freezing delicate items in your fridge or causing freezer burn.

How to Adjust Your Settings Throughout the Year
Spring and Fall: Minimal Adjustments

These seasons generally have milder ambient temperatures, which means your fridge and freezer don’t have to work as hard. This is a great time to check the internal temperature with an appliance thermometer and fine-tune it if needed. If your fridge is running colder than needed, you can slightly dial it back to save energy.

During the summer months, your kitchen tends to be warmer, and your fridge may get opened more often (think family gatherings, cold drinks, popsicles). Warm air sneaks in, and the appliance has to work harder to stay cool.

Tips:

Set your fridge closer to 37°F to compensate.

Avoid overloading the fridge—it restricts airflow.

Keep cold items like drinks and leftovers covered and placed near the back (coolest part).

In colder months, especially if your fridge is in a garage or basement, external temperatures can drop significantly. This might confuse the thermostat or compressor, especially in older units or ones in unheated areas.

Tips:

If you notice items freezing in the fridge (like lettuce or milk), bump the temperature up slightly toward 40°F.

Check your freezer too—if the compressor isn’t kicking on often, the temp might rise above 0°F without you realizing.

Setting your refrigerator and freezer to the optimal temperatures not only preserves food quality but also enhances energy efficiency. Appliances that are too cold use more electricity, as the compressor works harder to maintain lower temperatures. By keeping your fridge at the recommended settings, you can reduce energy consumption, lower your electricity bills, and extend the lifespan of your appliance.

Correctly setting your fridge and freezer temperatures can lead to significant financial savings. According to energy experts, optimizing these settings can reduce a household’s electricity usage by up to 10%. For an average household, this could translate to savings of $100 or more per year. When multiplied across millions of households, the potential savings are substantial, highlighting the importance of this simple adjustment.