Is the freezer still cold?
That single question splits the causes in two, because in most household refrigerators both compartments are cooled by one evaporator coil behind the freezer wall. Put a thermometer in each section for a few hours, then read the table.
| What you find | Where to look |
|---|---|
| Freezer cold, fresh-food section warm | evaporator fan, frost on the evaporator coil, air damper stuck shut, vents blocked by food |
| Both warm, compressor humming | dusty condenser coils, condenser fan, door gasket, low refrigerant |
| Both warm, compressor clicking or silent | start relay, control board, the compressor itself |
| Fresh-food section too cold, food freezing | damper stuck open, thermostat or temperature sensor |
Frost on the evaporator coil
Every refrigerator with automatic defrost runs a heater under the evaporator coil several times a day, then lets the melt run down a drain. When the defrost heater, its thermostat or sensor, or the defrost control fails, frost keeps building until it chokes the coil and the air can no longer pass. The signs are a frost pattern on the back wall of the freezer, a fan that scrapes or goes quiet, and a fridge not cooling even though the freezer still feels cold.
A full manual defrost, with the fridge unplugged and the doors open until all the ice is gone, is a useful test. If cooling comes back for a few days and then fades again, the defrost system is failing and needs a part, not another defrost. Protect the floor with towels while the ice melts.
The evaporator fan and the air damper
With the freezer door open and the door switch pressed in, you should hear the evaporator fan behind the freezer panel. Silence means a failed motor, a wiring or control problem, or a blade frozen in ice; a ticking or scraping sound usually means ice is touching the blade. Fixr lists fan replacement at $120 to $200 with labor.
The damper is a small flap or motorized door where the freezer air enters the fresh-food section. When it sticks shut, the fridge warms while the freezer stays cold; when it sticks open, lettuce and milk freeze. Make sure no box or bag is pressed against the vents on either side before blaming either part.
Condenser coils and the condenser fan
The condenser is where the heat pulled out of the cabinet leaves the refrigerator. On most current models it sits underneath, behind the kick plate at the bottom front, with a small fan beside the compressor; older models have a black grid on the back. Dust and pet hair on the coils, or a condenser fan that has stopped, make the compressor run for long stretches and still fall short, and both sections slowly warm. Unplug the fridge, remove the kick plate and vacuum the coils with a brush attachment. Fixr lists condenser coil work at $60 to $100.
When the compressor will not run
A click from the back every few minutes, with no steady hum, is the compressor trying to start and its overload cutting it off. The cause can be the start relay, a small plug-on part, or the compressor itself, and a technician can tell which with a meter. The difference in price is large: Fixr lists compressor replacement at $500 to $1,000 and sealed-system repair at $800 to $1,200.
Opening the refrigerant circuit is regulated work. Under 40 CFR 82.161, anyone who could open the sealed system of a household refrigerator must hold Type I technician certification, unless the refrigerant is one the EPA has exempted from its venting ban, such as isobutane (R-600a). On a fridge more than ten years old, a compressor or sealed-system quote is usually the point to price a replacement too.
After a power outage or a move
A refrigerator that was unplugged or lost power needs time to pull back down to temperature, so judge it with a thermometer after several hours rather than by touch. Some models also come back from an outage with their controls reset or showing an error. If the fridge was carried on its side during a move, follow the manual on how long to wait before plugging it in.
What the usual repairs cost
| Problem or part | Parts and labor |
|---|---|
| Fresh-food section too warm | $50–$250 |
| Freezer too cold, fridge warm | $50–$250 |
| Condenser coil | $60–$100 |
| Thermostat | $100–$260 |
| Fan | $120–$200 |
| Evaporator coil, replaced | $200–$300 |
| Control board | $500–$1,000 |
| Compressor | $500–$1,000 |
Fixr national refrigerator repair guide, updated August 29, 2025. Its service call runs $70 to $120 and is normally applied to the first hour of labor.
If the fresh-food section has already passed 40°F and you have a full load of groceries, ask for a same-day appliance repair visit when you call; whether one is possible depends on the companies covering your ZIP code. A stand-alone freezer with the same symptoms is covered on the freezer not freezing page.
Questions people ask next
Why is the freezer cold while the fridge section warms up?
Because the cold is made in one place. In most refrigerators the evaporator coil sits behind the freezer wall, and a fan pushes its air through a damper into the fresh-food section. A stopped fan, a coil wrapped in frost or a damper stuck shut leaves the freezer cold and the fridge warm.
Will turning the control colder fix it?
Rarely. If the air path is blocked, a colder setting only makes the compressor run longer, and the freezer can end up colder while the fresh-food side stays warm. Put the control back to the middle setting and look for the cause.
Is the food still safe?
The FDA target for the fresh-food section is 40°F or colder. It says to discard refrigerated perishables such as meat, poultry, seafood, milk, eggs and leftovers once they have been above 40°F for 4 hours or more. An appliance thermometer settles the question better than touch.
Sources
- How much does it cost to repair a refrigerator?, Fixr, updated August 29, 2025.
- Food and Water Safety During Power Outages and Floods, U.S. Food and Drug Administration, read September 29, 2026.
- Stationary refrigeration: prohibition on venting refrigerants, U.S. Environmental Protection Agency, read September 29, 2026.
- 40 CFR 82.161, Technician certification, eCFR, read September 29, 2026.
Reviewed October 1, 2026. Spotted an error? Write to admin@compareappliancerepair.com.