While a freezer may run for extended periods, it should not run constantly. A properly functioning upright freezer typically cycles on and off, running for about 50 % to 80 % of the day. Continuous 24/7 operation strains the motor, spikes energy bills, and indicates an underlying issue.
An upright freezer running constantly is usually trying to compensate for poor airflow, a failing seal, or a mechanical defect. To resolve this, check the door gasket for a tight seal, clean the condenser coils, ensure proper room ventilation, and check for heavy frost buildup on the inner coils.
It is completely normal for a modern, high-efficiency freezer to run 80% to 90% of the time. Modern compressors run at slower, variable speeds to maintain highly consistent temperatures with less energy, rather than constantly turning on and off.
For the fresh food compartment, aim for 37°F, within a safe range of 32°F to 40°F. This range slows bacterial growth without unintentionally freezing items. For the freezer, set 0°F to keep foods thoroughly frozen and maintain quality.
Strange Noises. Unusual noises coming from your upright freezer can be unsettling. The most common source of these noises is the evaporator fan or the condenser fan. If you hear a loud humming or rattling sound, it's likely one of these fans causing the disturbance.
Upright freezers typically last between 10 to 15 years. With excellent care and regular maintenance, some models can stretch up to 20 years. The compressor and the door seals are the most common parts to wear out first.
Types of Common Freezer Problems
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.
To reset a freezer compressor, disconnect the unit from power (unplug or flip the circuit breaker) for 5 to 10 minutes. This clears system faults and allows internal pressures to equalize. Restore power, then verify the temperature controls are properly set.
The compressor, coils and control board are the most expensive repairs. Your fridge's brand, model and size, plus your location, will impact repair costs. If your refrigerator is more than 6 years old and it will cost you more than half its original price to repair it, consider replacing it instead.
Sure, people know they keep food cold, but few people realise how they actually work, one common misconception is that many people think freezers run all the time and they don't! 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.
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).
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.
It is completely normal for a modern, high-efficiency freezer to run 80% to 90% of the time. Modern compressors run at slower, variable speeds to maintain highly consistent temperatures with less energy, rather than constantly turning on and off.
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.
A continuously running freezer is usually caused by a bad door seal, dirty coils, or a faulty thermostat. Your unit works harder to compensate for warm air leaks or poor ventilation.
The Amish keep food cold using a variety of off-grid methods, tailored to the strictness of their local church district. Common practices include:
Bottom-freezer refrigerators should be repaired within seven years and considered for replacement after that. Top-freezer refrigerators should be repaired within three years, considered for repair within three to six years, and replaced if older than seven years.
To tell if a refrigerator compressor is bad, first listen for the "click-then-nothing" sound, check if the fridge struggles to cool, and feel the compressor to see if it’s excessively hot. You can definitively diagnose it by testing the electrical pins with a multimeter or checking the start relay.
Most freezers do not have a dedicated, physical "reset" button. Instead, you can reset the freezer's internal computer or clear system errors by performing a hard power cycle. Unplug the freezer for 5 to 10 minutes, then plug it back in to reboot the system.
If your freezer compressor is running non-stop, it is working overtime to compensate for a heat buildup, a lack of insulation, or a failing mechanical part. To quickly troubleshoot and stop the continuous running, start with these top steps:
The reset button is almost always located on the electric motor itself—usually on the side or back near the terminal box. It typically sticks out as a small rubber-covered or exposed black/red button, sometimes labeled "Circuit Breaker".
Set your freezer dial to 0°F (-18°C). If your freezer uses a number scale (e.g., 1 to 5, or 1 to 9), this generally corresponds to the middle setting (like 3 or 4). This optimal balance prevents bacteria growth while saving energy.
To reset a freezer thermostat, turn the thermostat dial to “0” or “Off”. Unplug the freezer, wait 5 to 10 minutes to clear residual electrical charge, then plug it back in and adjust the dial to the ideal setting (typically 0∘𝐹 or −18∘𝐶).
Refrigerating the wrong items can ruin their flavor, alter their texture, and cause them to spoil faster. Avoid keeping produce like tomatoes, onions, potatoes, and garlic in the fridge, as well as pantry staples like bread, coffee, and honey, to maintain optimal quality.