Freezer Not Freezing: Common Causes and Solutions

Freezers are kitchen failsafes, holding leftovers, emergency meals, and staples for as long as you need to. That’s why it can be so disappointing to open the door to softened ice cream and mushy frozen veggies: signs your freezer is not cold enough.

Luckily, many freezer problems come down to simple issues you can spot and fix yourself. Start by understanding why your freezer is not freezing even if the refrigerator is working. Then, try the steps you feel comfortable handling. This is the American Home Shield® guide to the most common causes of a freezer that stopped working, what you can do, and when it’s time to bring in a Pro.

Why is my freezer not freezing?

Most freezers stop working because something is blocking airflow, letting cold air escape, or preventing the system from cooling efficiently. Common causes include:

• Faulty or loose door seal: Cold air leaks out when the gasket is cracked, dirty, or not sealing fully. Items sticking out or misaligned bins may also keep the door slightly open.

  
  
• Food blocking the evaporator fan: When air can’t circulate, the freezer can’t maintain freezing temperatures. The evaporator fan could also experience a breakdown due to a failed motor or damaged wiring.

  
  
• Dirty condenser coils: Dust-covered coils can’t release heat, reducing overall cooling power.

  
  
• Ice buildup on evaporator fan blades: Frozen blades prevent proper airflow.

Faulty start relay or compressor issues: If the relay can’t send power to the compressor, the freezer won’t get cold. Less commonly, a failing compressor can also keep the freezer from freezing.

How do I fix a freezer that’s not freezing?

If your freezer is not freezing or your freezer is not cold enough, the right fix depends on what’s causing the problem. Below are detailed steps for the most common issues homeowners run into.

When cold air is escaping

A loose, cracked, or dirty door seal can let cold air leak out, one of the simplest causes of a freezer that’s stopped working.

How to fix it:

1. Inspect the door for blockages. Make sure no food packages or bins are preventing the door from closing fully.

   
   
2. Clean the door gasket. Wipe it with warm, soapy water to remove residue that prevents a tight seal.

   
   
3. Test the seal. Close a dollar bill or piece of paper in the door. If you can slide it out easily, the gasket may need repair or replacement.

   
   
4. Check for wear and tear. Look for cracks, warping, or loose sections that allow cold air to escape.

When food is blocking the evaporator fan

The evaporator fan pushes cold air through the freezer. If items are packed too tightly, the fan can’t circulate air, leaving you with a freezer that’s not cold enough.

How to fix it:

1. Locate the evaporator fan, usually on the back wall of the freezer.

   
   
2. Reorganize items to leave a few inches of clearance around the fan cover.

   
   
3. Avoid overpacking. Freezers work best when airflow isn’t obstructed.

   
   
4. Listen for the fan running. If it’s unusually quiet or loud, you may have a deeper mechanical issue (covered below).

When the condenser coils are dirty

If the condenser coils can’t release heat properly, the entire cooling system struggles—often causing a freezer that’s not cold enough.

How to fix it:

1. Unplug the refrigerator.

   
   
2. Locate the condenser coils (behind the unit or underneath, depending on the model).

   
   
3. Use a refrigerator coil brush to loosen dust and debris.

   
   
4. Vacuum the area to remove buildup.

   
   
5. Repeat every 2–3 months to help prevent the freezer from warming up again.

When the evaporator fan is malfunctioning

If your evaporator fan isn’t working, the freezer can’t circulate chilled air, even if the rest of the system is functioning.

How to fix it:

1. Unplug the refrigerator.

   
   
2. Remove the panel covering the evaporator fan.

   
   
3. Check for ice buildup. Ice on the fan blades can prevent airflow. Defrost as needed.

   
   
4. Inspect the blades for bends or damage. Replace if necessary.

   
   
5. Test blade movement. Spin the blades manually—if they resist turning, the motor may be failing.

   
   
6. If the fan doesn’t run after cleaning and clearing ice, you may need to replace the motor or repair wiring between the fan and thermostat control.

When there is a bad start relay or compressor issue

If your freezer stopped working suddenly, the start relay may be failing to send power to the compressor. This is one of the more serious causes of a freezer not freezing.

How to fix it:

1. Unplug the refrigerator.

   
   
2. Remove the back panel to access the compressor compartment.

   
   
3. Disconnect the start relay from the compressor.

   
   
4. Gently shake it.
   • Rattling noise (like dice in a cup): The start relay is likely bad and needs replacing.
   • No rattle: The issue may be the compressor itself.If the compressor is the problem, this typically requires professional repair or replacement.

When to call a professional

Some freezer problems are simple to fix. Others—like compressor failures, faulty thermostats, damaged wiring, or repeated overheating—require expert diagnosis.

You should call a professional when:

• The freezer still isn’t freezing after trying the steps above.
• The evaporator fan or condenser fan won’t run even after cleaning.
• You suspect a compressor issue.
• You notice burning smells, electrical issues, or repeated cycling on and off.
• The freezer continues running constantly without cooling effectively.

Other signs something’s wrong

Sometimes the freezer is freezing but still showing symptoms that something isn’t working as it should. Paying attention to these signs can help you catch problems early before they lead to a freezer not freezing at all.

Freezer constantly running

If your freezer runs nonstop, even when the door stays closed, the issue often points to the temperature control thermostat or a malfunctioning fan motor.

• A faulty thermostat may cause the freezer to overwork itself trying to hit the set temperature.
• A failing evaporator or condenser fan motor can also force the system to run continuously because it isn’t moving air effectively.

Resetting the thermostat may help temporarily, but repeated cycling or loud fan noise can indicate it’s time for repair.

Freezer making strange noises

Everyday freezer sounds, like clicks, pops, or low hums, are all part of normal operation. But new, louder, or unusual noises can signal a developing issue.

• Buzzing or clicking may point to a struggling compressor relay.
• Gurgling or humming can indicate restricted airflow.
• Popping or crackling can happen and may be associated with a defrost cycle.

One common cause is dirty condenser coils, which force the freezer to work harder and get noisier. A struggling compressor relay can also create buzzing or clicking, especially if the freezer starts running warmer than usual.

Freezer leaking water or building up frost

If you notice water under the freezer or excess frost inside, the most likely cause is a clogged or frozen defrost drain.

• When the drain is blocked, meltwater can’t flow to the drain pan.
• Water may then leak onto the floor, or frost may accumulate inside the freezer.
• Clearing the drain line with warm water (a turkey baster works well) often solves the issue.

If frost returns quickly or leaks continue, the defrost system may need a closer look from a professional.

How to maintain your freezer

A few simple habits can help prevent your freezer from not freezing, running constantly, or developing airflow issues. Regular maintenance on your freezer (and your fridge) can help keep the appliance efficient and can extend its lifespan.

Check the thermostat regularly

Make sure the thermostat is set to the recommended temperature—0°F for most freezers. A thermostat that gets bumped or drifts out of calibration can make the freezer work harder than it needs to or leave food only partially frozen.

Clean the interior and condenser coils

• Interior: Wipe shelves, drawers, and walls regularly to remove spills and residue that can trap odors or make the door harder to close.

  
  
• Condenser coils: Dusty coils force the freezer to overwork and lose cooling power. Clean them every 2–3 months using a coil brush or vacuum attachment.

Don’t overload the freezer

Air needs space to circulate. An overpacked freezer can block vents, overload the evaporator fan, and cause warm spots. Leave a little room around the back wall and avoid stacking items directly under the fan cover.

Keep the door seals clean

Dirty or sticky gaskets can prevent the door from sealing tightly, allowing cold air to escape. Wipe seals with warm, soapy water, then dry thoroughly. Check for cracks, tears, or gaps during cleanings so issues don’t go unnoticed.

Bring your freezer back to its best day with AHS

When something stops working in the kitchen, it’s easy to feel like you’re on your own. With American Home Shield, you don’t have to be.

AHS offers home warranty plans with appliance coverage and access to a nationwide network of Pros who help repair covered issues when DIY fixes aren’t enough. And with select plans, enjoy video chatting with a live repair Expert via the AHS app for guidance before making a service request, giving you real answers, in real time, at no extra cost.

Want to stay ahead of future surprises? Explore more homeowner tips and troubleshooting guides on the Home Matters blog. You’ll find helpful articles on everyday questions—like how a refrigerator cycle works—and other resources to keep your home running smoothly.

*See the plan agreement for coverage details, including service fees, limitations and exclusions. Coverage limits and charges for non-covered items may apply. Video chat available as a member benefit with select AHS plans. Video chat hours are from 8AM-9PM CST, 7 days/week. Subject to change.

AHS assumes no responsibility, and specifically disclaims all liability, for your use of any and all information contained herein.