Fridge Not Cooling? Fix It Tonight Before the Food Goes
- 6 parts and tools
A fridge that stops cooling is a race against the clock, because the food inside has only a few hours before it becomes unsafe. The good news is that most cooling failures tonight are airflow problems, dirty coils, or a setting that got bumped, and all of those are fixable without tools or a service call. Work through this in order, and check the temperature as you go. You want the fridge at or below 40 degrees and the freezer at or below zero.
What's probably wrong
Blocked airflow is the most common cause. A fridge cools by moving cold air around, and it cannot do that if the vents inside are covered. Bags of food pressed against the back wall, a freezer packed solid to the top, or a pizza box leaning over the vent slots will starve the fridge of cold air even though the freezer feels fine.
Dirty condenser coils are the second suspect. The coils release heat, and when they are covered in dust and pet hair, the fridge has to work much harder and cools poorly. The coils are usually underneath the fridge behind a front grille, or on the back. If you have pets or the fridge is in a dusty spot, this is very likely.
A setting that got changed is the third suspect. The temperature dial or control panel gets bumped when food is loaded, or a child presses buttons. A fridge set to its warmest setting will feel like it is failing when it is actually just following orders. A fridge in a very hot garage or a very cold room can also struggle, because most fridges are designed for normal indoor temperatures.
A door seal problem is the fourth suspect. If the rubber gasket is torn, warped, or not sealing all the way around, warm air leaks in constantly and the fridge can never catch up. You can feel this as a cold draft around the door edge, or see condensation building up inside.
A fan or compressor problem is the serious cause. If the fridge is silent when it should be running, or if it clicks on and off every few minutes, the compressor or a fan motor may be failing. If the freezer is cold but the fridge is warm, the fan that moves air between them may be dead. Those are pro jobs, because they involve sealed refrigeration parts and electrical components.
Fix it tonight
Check the temperature settings first. Set the fridge to 37 degrees and the freezer to zero, or to the middle of the dial if yours uses numbers instead of degrees. Wait at least an hour before judging, because a fridge changes temperature slowly. If someone bumped the dial, this alone may fix it.
Give the fridge room to breathe. Pull it a few inches away from the wall if you can do so safely, and make sure nothing is blocking the vents on the back or underneath. Inside, pull food away from the vent slots on the back wall of the fridge and freezer. Leave a little space around items so air can move.
Check the door seals. Close the door on a dollar bill at several spots around the edge and pull gently. If the bill slides out easily in one area, the seal is weak there. Wipe the gaskets with warm soapy water and dry them, because sticky residue can break the seal. If a gasket is torn or warped, it needs replacing, and that is a part you can order, though fitting it tonight is unlikely.
Clean the condenser coils. Unplug the fridge first. If the coils are underneath, remove the front grille at the bottom and vacuum the coils with a brush attachment. If they are on the back, vacuum them from behind. Be gentle. Bent coil fins still work, but a crushed section does not help. Plug the fridge back in when you are done.
Listen to the fridge. Stand next to it for a minute. You should hear a low hum when the compressor runs and a soft fan sound inside. If you hear clicking every few minutes with no hum, turn the fridge off and on once at the outlet and listen again. Repeated clicking usually means a compressor problem, and that is a pro call, not a tonight fix.
Check the freezer fan. If the freezer is cold but the fridge is warm, open the freezer and listen for the fan. Press the door switch by hand. The fan should start or change speed. If the fan never runs, the cold air is not reaching the fridge, and you need a pro.
Move the most perishable food now, before you finish diagnosing. Milk, raw meat, leftovers, and cut produce are the first things at risk. If the fridge is above 40 degrees and has been for more than two hours, throw out raw meat, seafood, and leftovers rather than gambling. A bag of ice in the fridge section can buy you some time while you work, and a cooler with ice is better for anything you want to save.
Check the room temperature. If the fridge is in a garage that is very hot or very cold, move what you can to a kitchen fridge or a cooler. Most fridges struggle when the room is far outside normal indoor temperatures, and no setting fixes that.
Give it time and recheck. After cleaning coils, clearing vents, and setting the temperature, wait two to four hours and check with a thermometer, not your hand. Your hand is a poor judge. A cheap fridge thermometer, or a kitchen thermometer in a glass of water left in the fridge for an hour, gives you a real number.
Parts and tools
When to call a pro
Call a pro if the compressor clicks repeatedly and never runs, if the fridge is completely silent and warm even after you confirmed the outlet has power, or if the freezer is cold but the fridge stays warm and the fan never runs. Call a pro if you see a large amount of frost building up in the freezer, which can point to a defrost system failure. Do not open sealed refrigeration panels or touch refrigerant lines. Refrigerant work is licensed work, and the system is under pressure.
What a pro typically costs
These are broad typical ranges, not quotes. A diagnostic visit usually runs about 75 to 150 dollars. A fan motor replacement usually runs about 150 to 300 dollars including parts and labor. A door gasket replacement usually runs about 150 to 250 dollars. A compressor replacement is a big job and usually runs about 500 to 900 dollars, and at that point many people compare the repair cost to the cost of a new fridge before deciding.
FAQ
How long can food last in a fridge that stopped cooling?
Perishable food is generally considered unsafe after about two hours above 40 degrees, and that clock is shorter for raw meat and seafood. When in doubt, throw it out. A fridge full of food holds its temperature longer than a nearly empty one, but that only buys a little time, not a day.
Why is my freezer cold but my fridge warm?
Most fridges make all their cold air in the freezer and blow some of it into the fridge section with a fan. If that fan dies, or if the air path is blocked with ice or packed food, the freezer stays cold while the fridge warms up. Check the vents and listen for the fan first.
Should I turn the fridge to its coldest setting to fix this?
No. The coldest setting does not make the fridge cool faster, and it can freeze food in the fridge section and strain the compressor. Set it to the recommended temperature, fix the airflow or coil problem, and give it time.