Home Doctor

Appliances guide

Refrigerator not cooling: what to check and when it's worth fixing

By the Home Doctor team · Reviewed

Quick answer

A refrigerator that isn't cooling usually has dirty condenser coils, a failed condenser or evaporator fan, a frosted-over evaporator from a defrost failure, or leaky door seals. If the freezer is cold but the fridge is warm, suspect the evaporator fan or frost. Check the temperature setting, then unplug it and vacuum the coils. Fan and defrost repairs typically run $150 to $450. A compressor or refrigerant repair needs an EPA-certified tech and costs $500 to $1,500 or more, rarely worth it on a fridge over about 10 years old.

How urgent
Urgent

Food starts to spoil once the fridge is above 40°F, so deal with it today. It gets worse fast in a hot kitchen or when the doors are opened a lot.

DIY or pro
DIY if handy

Checking settings, cleaning coils and door seals, and a manual defrost are DIY. Swapping a fan motor or start relay is a handy job on many models. Anything involving refrigerant or the compressor needs an EPA-certified tech.

Stop and call a pro now if

  • A thermometer in the fridge reads above 40°F: move perishables to a cooler with ice. Throw out meat, poultry, seafood, milk, eggs and leftovers that have been above 40°F for 2 hours or more, and don't taste food to check it.
  • Before you clean the coils or touch a fan: unplug the fridge. Fans can start without warning, and the compressor area has live wiring.
  • Burning smell, or a scorched plug or outlet: unplug the fridge, or switch off the breaker if you can't reach the plug, and don't use it until it's checked.
  • Hissing from the tubing, an oily spot near the compressor, or a chemical smell: unplug it, air out the room and keep flames and sparks away. Many newer fridges use a flammable refrigerant (the rating plate says which). Call an EPA-certified tech.

Common causes and how to tell them apart

  1. 1. Temperature control set wrong

    How to tell
    The dial or display got bumped warmer or to Off, or the lights and display work but nothing cools (Demo or Showroom mode on some digital models). A fridge that was just delivered or moved can take up to 24 hours to get fully cold.
    What fixes it
    Set the fridge to about 37°F, or the middle of the dial, and the freezer to 0°F, then give it 24 hours. The manual explains how to turn off Demo mode.

  2. 2. Dirty condenser coils or a stopped condenser fan

    How to tell
    The coils under the front grille or on the back are furred with dust and pet hair. The fridge runs nonstop and its sides feel hot. On models with coils underneath, little or no warm air blows out under the front grille.
    What fixes it
    Unplug it, then clean the coils with a coil brush and a vacuum. If the small fan next to the compressor at the bottom back won't spin, it needs a new motor.

  3. 3. Leaky door seals

    How to tell
    A gasket is torn, flattened or pulling away. A dollar bill closed in the door slides out with no drag. The door doesn't swing shut by itself, or food keeps it from closing.
    What fixes it
    Clean the gasket with warm soapy water, move whatever blocks the door, and adjust the front legs so the fridge tilts back slightly. Replace a torn gasket.

  4. 4. Failed evaporator fan or blocked vents

    How to tell
    The freezer is cold but the fridge is warm. With the compressor running, open the freezer and press the door switch: you don't hear or feel the fan behind the back wall, or it squeals.
    What fixes it
    Move food away from the vents between the freezer and the fridge. A silent or noisy fan needs a new motor, which sits behind the freezer's back panel on most models.

  5. 5. Frost-blocked evaporator (defrost failure)

    How to tell
    Thick frost or ice on the freezer's back wall or vents. The fridge warmed up gradually over days, and the freezer may be getting warmer too.
    What fixes it
    Empty it, unplug it and leave the doors open for 24 to 48 hours with towels down. Never chip the ice with a knife: a punctured tube ruins the fridge. If it frosts up again within a few weeks, the defrost heater, thermostat or control needs replacing.

  6. 6. Start relay or compressor

    How to tell
    A click from the bottom back every few minutes, a short hum, then silence. The lights and fans work but nothing gets cold, and the compressor feels hot.
    What fixes it
    The start relay on the side of the compressor is a cheap part and often the culprit. If a new relay doesn't help, the compressor has failed. That's sealed-system work for an EPA-certified tech, and often not worth it on an older fridge.

Not sure which one you have?

Snap a photo. Home Doctor narrows it down, tells you how urgent it is, and prices the fix.

Diagnose it from a photo

First diagnosis free. No account needed.

What you can safely try first

  1. 1Put an appliance thermometer on the middle shelf and check it after a few hours. Above 40°F, move meat, dairy and leftovers to a cooler with ice, and keep the doors shut.
  2. 2Check the controls: fridge about 37°F, freezer 0°F, and not in Demo or Showroom mode.
  3. 3Unplug the fridge, take off the grille at the bottom front (or pull it out if the coils are on the back) and clean the coils with a coil brush and a vacuum.
  4. 4Make sure food isn't blocking the vents in the freezer or fridge, and do the dollar-bill test on the door seals.
  5. 5If there's thick frost on the freezer's back wall, empty it, unplug it and leave the doors open for 24 hours or more with towels down.
  6. 6Plug it back in and listen: the compressor should hum steadily. Clicking every few minutes points to the start relay or compressor.

When to call a pro

  • The freezer is cold but the fridge stays warm after you've cleaned the coils and cleared the vents.
  • Frost builds up again within weeks of a manual defrost.
  • The compressor clicks on and off without running, or stays silent while the lights work.
  • You suspect a refrigerant leak. Sealed-system work requires EPA certification.

What it costs

Typical costs to fix: refrigerator not cooling
JobDIY partsPro, installed
Appliance repair diagnostic visit—$75–$200
Clean condenser coils$10–$25$100–$200
Replace condenser or evaporator fan motor$30–$100$150–$400
Repair the defrost system (heater, thermostat or control)$20–$100$150–$450
Replace start relay$15–$60$150–$300
Sealed-system repair (compressor or refrigerant leak)Not allowed$500–$1,500+

Ballpark US ranges as of September 28, 2026. Your region, access and the specifics of your home can move these a lot. Get two or three quotes for anything over a few hundred dollars.

What to tell the pro

My [top-freezer / bottom-freezer / side-by-side / French-door] refrigerator, about [age] years old, isn't cooling. The fridge reads [temperature] and the freezer is [still cold / also warm]. I [do / don't] hear the fan in the freezer, the compressor [runs / clicks on and off / is silent], and there [is / isn't] frost on the freezer's back wall. I've [checked the settings / cleaned the coils / defrosted it]. Given its age, is it worth repairing, and if it's the compressor or a leak, what would the full repair cost, with warranty?

Questions people ask

Why is my freezer cold but my fridge warm?

Usually the evaporator fan has stopped or the evaporator coil is blocked with frost. Both sit behind the back wall of the freezer, and cold air can't reach the fridge without them. Make sure food isn't blocking the vents, then listen for the fan. A fan motor or defrost repair typically costs $150 to $450 installed.

How long is food safe in a refrigerator that stopped cooling?

About 4 hours if you keep the door closed, according to the USDA. Throw out perishables like meat, poultry, seafood, milk, eggs and leftovers that have been above 40°F for 2 hours or more. A full freezer holds its temperature for about 48 hours, or 24 if it's half full, as long as the door stays shut.

Is it worth fixing a refrigerator that's not cooling?

Usually yes if it's a fan, start relay, door gasket or defrost part, which typically cost $150 to $450 installed at almost any age. A compressor or refrigerant leak at $500 to $1,500 or more is rarely worth it on a fridge older than about 10 years. On a newer one, check the warranty first: many manufacturers cover the sealed system longer than the rest of the fridge. A common rule of thumb is to replace when the repair costs more than half the price of a comparable new fridge.

Can I recharge the refrigerant in my fridge myself?

No. Handling refrigerant requires EPA certification, and a household fridge has no service ports for topping it up. Low refrigerant always means a leak, so a tech has to find and fix it, then evacuate and recharge the system.

Get an answer for your house

Every house is different. A photo gets you the likely cause, how urgent it is, and a fair price, in about 30 seconds.

Diagnose it from a photo

First diagnosis free. No account needed.

General guidance, not a substitute for a licensed professional who can see the problem in person. If you smell gas, see sparks or smoke, or anyone is hurt, leave the area and call 911.