This is one of the most common refrigerator problems we see — and it's almost always an airflow or evaporator fan issue, not the compressor. That's actually good news: it's usually a straightforward repair.
When your freezer is cold but the refrigerator section is warm, the refrigerant system is almost certainly working fine. The compressor is running, the freezer is making cold air — it's just not reaching the fridge. Here's why that happens:
The evaporator fan sits inside the freezer wall and blows cold air through a duct into the refrigerator compartment. When this motor fails, cold air stays trapped in the freezer. You may hear a grinding or squealing noise, or notice total silence where a faint fan hum should be. This is the most common cause of this exact symptom. Fix: motor replacement, typically $130–$220 including labor.
A small motorized damper (also called an air diffuser) opens and closes to regulate cold airflow from the freezer to the fridge. If it freezes shut or the motor fails, no cold air reaches the refrigerator section even though the fan is running. Often the fridge will feel slightly cool — just not cold enough. Fix: damper replacement, typically $100–$180.
Modern refrigerators run an automatic defrost cycle to prevent frost from building up on the evaporator coils. If the defrost heater, defrost thermostat, or defrost timer fails, frost accumulates until it completely blocks the airflow path. The freezer stays cold (the coils are still working) but nothing gets through to the fridge. You might see heavy frost on the back wall of the freezer. Fix: defrost component replacement, typically $100–$200.
Condenser coils on the back or bottom of your fridge release heat from the refrigerant. When they're heavily clogged with dust and pet hair, the refrigerator can't shed heat efficiently — the result is a warm fridge section with a freezer that's still marginally functional. This is the one cause you can address yourself (see below). Fix: cleaning coils, $0 DIY or included in a service call.
Not every part of this diagnosis requires a technician. Here's an honest breakdown of what's DIY-safe and what needs professional attention:
If you've cleaned the coils and manually defrosted and the problem returns within a few days, a defrost system component has failed and the fridge will ice up again. At that point, call us — don't keep cycling through manual defrost. We serve Rochelle, DeKalb, Dixon, Byron, Oregon, and the surrounding area. See our pricing guide for repair cost estimates.
BW Appliances serves Rochelle, DeKalb, Dixon, Byron, Oregon, and surrounding areas.
We diagnose, quote, and repair — usually in one visit.