How Does a Refrigerator Work?

If you’re like most homeowners you don’t give too much thought to the inner workings of a refrigerator before it stops running, or unless it comes time to buy a new model. In order to get the most use possible out of this important appliance it can be extremely nice to understand exactly how it keeps food cool—and United Appliance Repair is here to explain.

Continue reading to learn everything you will want to know about how a refrigerator works, how it cools your food and if it’s time to call refrigerator repair Fullerton.

Parts of a Refrigerator

You won’t find too many houses that do not feature a refrigerator inside the kitchen. It’s been a must-have household appliance for many years. A residential refrigerator will store food and drinks at the right temperature, in order to prevent rotting and stop the growth of harmful bacteria. The cycle of refrigeration starts by moving the warmth from the inside of the appliance to the outside, relying on principles of evaporation and condensation.

The main parts of your refrigerator are. For questions or service call United Appliance Repair:


A refrigerator compressor is a combo of a pump and motor, and it’s responsible for the circulation of refrigerant in the system.
The compressor is an integral part of a refrigerator. You should enlist a professional company if the compressor is no longer working.


A condenser is located on the back outside wall of the refrigerator and is there to release the heat built-up inside the refrigerator then out in the air.


The refrigerator evaporator is stored in the interior of a refrigerator where it absorbs warmth contained inside of it, effectively reducing the interior temperature.

Once an evaporator isn’t working, it is time to find a professional. Do not wait until it’s too late.

Expansion Device

Liquified coolant is carried through a capillary tube that serves as an expansion device to cool the gas, transforming the gas into liquid.


The thermostat will regulate the current temperature within a refrigerator, engaging the cooling cycle when appropriate.

The thermostat in a refrigerator is very prone to issues. Troubleshoot and hire a repairman in Fullerton for repair right after a problem occurs.

How Does Refrigeration Work?

1. When the temperature in the interior of the refrigerator goes higher than the set point sensors alert the compressor to start, and then the next cool down begins. The unit attracts the cold liquified refrigerant, then pressurizes and condenses it, and raises the temperature, in order to turn it into a gas form.

2. The compressor unit directs the heated gas towards the condenser coils located on the rear of the refrigerator, at which point it comes in contact with warmer air temperature in the room and transforms to a liquid state.

3. The cool liquified gas then continues its trip towards the refrigerator evaporator, traveling through the many coils in the interior of the refrigerator and top freezer compartment.

4. The refrigerant absorbs the heated air from within the appliance, thereby reducing the temperature until it has reached the best set point.

5. The liquid then evaporates, and turns back to a gas, and returns to the compressor unit to then continue the cycle.

Refrigeration is found in many applications and large appliances, including heat pumps, air conditioners, refrigerators and residential freezers. By contracting warmth from one area and then moving it to another the cycle of refrigeration will help cooling your home, provides a safe storage space for food that is perishable, and also helps with manufacturing and storage of several different everyday products and goods.

Need Refrigerator Repair?

Does your refrigerator require professional attention? Time to schedule service with United Appliance Repair.

United Appliance Repair will fix all major brands of refrigerators – that includes commercial models, stand-alone and side-by-side.Our licensed service technicians in Fullerton undergo training to repair issues with cooling, malfunctioning ice makers, condensation, puddles of water and leaks, light bulbs, digital controls, smart controls and countless other malfunctions. We know all there is to know about refrigerator repair! Schedule now!