The lights on a freezer indicate the operating status or temperature of the appliance. Depending on your model (often found on chest or upright freezers), the colors typically mean the following:
Green Indicator: The green light indicates that the appliance is connected to the mains supply and is receiving power. This is a good sign that your freezer is operational and ready for use. Red Indicator: The red light activates when there is a high-temperature warning.
Green = Run. The green run light indicates the compressor is running. If the indicator is dark it does not mean the unit is off. The compressor only runs when the compartment temperature is too high.
Your freezer's red light or high temperature alarm will turn on when it is not cold enough. This means the freezer is not be suitable for storing frozen food until the light has turned off.
Your freezer is colder on 5. On most standard dials, the numbers represent "cooling power". 1 is usually the warmest setting, while 5 is the coldest.
A good starting point is the middle setting (for example, 3 or 4). You can use a freezer thermometer to check the temperature and adjust it gradually. Small tweaks are better than large jumps to avoid over-cooling and wasting energy.
Temperature Control: Represented by a snowflake or thermometer, this symbol allows you to adjust the temperature settings of your fridge and freezer to maintain optimal conditions for food preservation.
Your freezer should be set to 0°F (-18°C) or below. To quickly check if it is cold enough, place an Appliance Thermometer inside, listen for your compressor running, or check if ice cream is rock solid. If food is soft or icy on the outside, your freezer is likely too warm.
Does your door closure system have a mechanical switch? See where it is located, and check if it's working and the effect on the light by pressing it. If it doesn't change anything and the light stays on, there's a chance that this switch is defective or broken and you'll need to replace it.
For Refrigerators and Freezers to maintain the proper temperature, the compressor will run much of the time. Refrigerators and Freezers have compressors that are designed to run 80% to 90% of the time.
A freezer with no green light usually indicates a power interruption, a burned-out indicator bulb, or a tripped circuit. The actionable steps to fix this depend on whether the appliance is actually cooling, but always start by checking your power supply.
Based on 2025 average electricity rates of $0.17 per kWh, Energy Star chest freezers cost $3.00-3.75 per month to operate, while upright freezers cost $5.50-6.25 monthly. Older models can cost $7.00-11.25 per month due to lower efficiency.
The Amish keep food cold using a variety of off-grid methods, tailored to the strictness of their local church district. Common practices include:
You should aim to defrost your freezer at least once a year or more frequently if your freezer is prone to ice build-up. You should also defrost your freezer if the ice build-up is more than ¼-inch thick.
The benefit of that light is that your food is easier to find. However, since people tend to open their refrigerators more than their freezers, the cost of adding a freezer light outweighs the benefits. For manufacturers, the money they save justifies their decision to forego that second light.
To quickly determine if your freezer is working, place an appliance thermometer inside, listen for a low humming sound from the compressor, or try the "penny trick" (freezing a cup of water solid, placing a penny on top, and checking if the penny sinks).
Green Indicator is lit when the appliance is connected to the mains and will glow if there is electricity present. Red Indicator is lit to alert you of a high temperature warning. If the red indicator remains switched on, wait 24-hours before calling the service centre.
Use the following steps to reset your freezer:
Watch for warning signs like food spoiling prematurely, clicking or buzzing noises, continuous motor running, or excessive frost/condensation. Older units often cost more to repair than replace.
Freezers typically last anywhere from 12 to 20 years. Along with gas and electric ranges, freezers tend to be the longest-lasting kitchen appliances. But that's not a guarantee! Many factors influence how long freezers last, including maintenance and environmental factors.
Putting a penny (or any coin) in the freezer is an easy trick used to check if your freezer lost power while you were away, and whether your frozen food is still safe to eat.
Freezer problems and possible solutions
Three different snowflake symbols are encoded in Unicode: "snowflake" at U+2744 (❄); "tight trifoliate snowflake" at U+2745 (❅); and "heavy chevron snowflake" at U+2746 (❆). In the Tang Dynasty, snowflakes in poetry sometimes served as a symbol of the cosmic energy of the Tao and the Milky Way galaxy.
Freezer Temperatures
Just as with a fridge, place an appliance thermometer in the freezer to make certain the temperature is optimally set and check it regularly to make sure it stays constant.
When choosing between a "Defrost" (manual defrost) and "No Frost" (frost-free) refrigerator, the decision comes down to maintenance versus efficiency. Defrost units require manual ice clearing but are cheaper and more energy-efficient. No Frost units use fans to prevent ice buildup automatically, offering ultimate convenience at a higher cost.