How to Tell if Your Refrigerator is Actually Broken

Quick Answer

To tell if your refrigerator is broken, start by checking the power and thermostat settings, then perform the dollar bill test on door seals and listen for the compressor hum. If the compressor is silent while the lights are on, or if the coils are caked in dust, you likely have a mechanical or airflow failure.

Catching a failing fridge early is the difference between a $20 relay and a $600 compressor job. Honestly. The most common thing I see is people ignoring a fridge that's running constantly until the compressor burns out completely. That constant running is your warning sign. A quick checkup twice a year catches the cheap problems before they become expensive ones.

GenericRefrigeratorSeverity: lowDifficulty:

Time to Fix

15–30 min

Difficulty

Parts Cost

$0 (no parts needed)

Tools Needed

Digital thermometer, Dollar bill

How to Tell if Your Refrigerator is Actually Broken

I recommend doing this fifteen-minute checkup twice a year. You don't need fancy tools, just a thermometer, a dollar bill, and a vacuum. It's the best way to separate a simple dirty coil issue from a serious sealed system problem before the ice cream melts and the milk spoils. Most of the time it's something cheap. Really.

Common Causes

Condenser coils are buried under a thick layer of dust and pet hair, so the fridge can't dump heat into the room and just runs hot continuously until something gives.
The door gasket has cracked or warped from age or getting cleaned with the wrong products, and it's been leaking cold air all day long without you noticing.
The start relay on the compressor has failed. It's a small cube-shaped part that rattles like a maraca when you shake it, and it's keeping the compressor from ever starting.
The defrost heater or defrost thermostat burned out, so ice slowly builds up on the evaporator coils until airflow is completely blocked and everything inside warms up.
The evaporator fan motor seized, so even though the compressor's running fine, no cold air is actually moving into the fridge or freezer sections.

Symptoms You May Notice

Food in the fridge section is spoiling days earlier than it should, especially dairy and leftovers.
There's a solid wall of frost covering the entire back wall of the freezer compartment and your ice cream is rock solid but the fridge section feels warm or room temperature.
You hear a clicking noise from behind the fridge every 2-3 minutes, then silence, then clicking again on repeat.
The motor runs constantly and never cycles off, and the back of the fridge feels really hot to the touch.
A puddle of water forms under the front of the fridge, usually worst first thing in the morning.

Tools Required for Diagnosis

Digital thermometerDollar billVacuum with brush attachmentFlashlightPhillips #2 screwdriver (for coil access panel)Condenser coil cleaning brush

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

Frequently Asked Questions

How long should a refrigerator last before it breaks?

Most refrigerators are built to last somewhere between 10 and 14 years. If yours is over 15 and it's starting to have cooling problems or making weird noises, it's usually more cost-effective to replace it than to do a major repair like a compressor swap. That said, age alone doesn't tell the whole story. A 13-year-old fridge that just needs a $20 door gasket is absolutely worth fixing.

Why is my refrigerator running but not getting cold?

This is usually an airflow problem or a refrigerant leak. If you can hear the fans running but there's no cold air, check the back wall of the freezer. If it's covered in a solid sheet of frost, you've got a defrost system failure, not a dead compressor. That's actually good news because defrost heaters and thermostats are cheap parts compared to sealed system work. We're talking $20-$60 instead of $400+.

Is it worth fixing a 10 year old refrigerator?

Depends on what broke. A fan motor, start relay, or thermostat? Fix it. Those are $20-$80 parts and maybe an hour of your time. But if the compressor seized or there's a refrigerant leak in the sealed system, you're looking at $400-$800 in parts and labor. At that point you're better off putting that money toward a new fridge. General rule: if the repair costs more than half of what a replacement unit costs, replace it.

Why is there water on the floor under my fridge?

Water on the floor is almost always a clogged defrost drain, not a broken cooling system. During the defrost cycle, melted ice has nowhere to go but out the front. Grab a turkey baster, fill it with hot water mixed with a little baking soda, and flush out the drain hole at the bottom back of the freezer compartment. Takes about 5 minutes and it usually fixes it completely. If water keeps coming back, the drain line itself might need to be cleared with a flexible drain brush.

How do I know if my compressor is bad?

The classic sign is a clicking noise every 2-3 minutes. That's the start relay trying and failing to kick the compressor on. Put your hand on the compressor housing, the black dome-shaped thing at the back bottom of the fridge. It should feel warm but not scorching. A seized compressor will either be completely cold and silent or so hot you can't hold your hand on it. But before you assume it's the compressor, pull the start relay off and shake it. If it rattles, replace that first. It's $15. I've seen people spend $600 on a new compressor when a $15 relay was the actual problem.

Written by

Mike Sullivan

Lead Appliance Repair Technician · 20 years experience

Last verified for technical accuracy on March 17, 2026