How Does a Refrigerator Work?

The majority of homeowners don’t give too much thought to the parts of a refrigerator before it stops running, or unless it comes time to replace it. In order to get the most out of this important appliance it can be very useful to know how a refrigerator keeps food cool—and Metro Appliance Repair is here to explain.

Read below to learn what you might need to understand concerning how refrigerators work, how it cools your food and drinks and if it’s time to hire appliance repair Silver Spring.

Parts of a Refrigerator

You won’t find many houses that do not feature a refrigerator in the kitchen. It has been a standard kitchen appliance for several years now. A household refrigerator can store food and drinks at the right temperature, in order to prevent rotting and stop the growth of harmful bacteria. The concept of refrigeration works by transferring the heat from the interior of the appliance to the exterior, by using principles of condensation and evaporation.

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


A compressor is a combo of a motor and a pump, and it’s responsible for the circulation of refrigerant in the cooling system.
A compressor is an important part of a refrigerator. You should call on a professional service if the compressor is not working.


The refrigerator condenser is found on the back exterior panel of the appliance and is there to disperse the warmth collected from inside the refrigerator out into the surrounding air.


The refrigerator evaporator is installed in the inside of the refrigerator where absorbs the warmth trapped inside of it, thereby lowering the interior temperature.

The moment an evaporator isn’t working, it is time to find a professional. You should not wait until it is too late.

Expansion Device

Liquified refrigerant is directed through a capillary tube that works as an expansion tool to cool the gas, transforming the gas back into a liquid.


A thermostat will regulate the current temperature in the interior of a refrigerator, beginning a new cooling period when needed.

A thermostat in a refrigerator is often prone to issues. Troubleshoot and hire a technician in Silver Spring for service right when a problem happens.

How Does Refrigeration Work?

1. Once the temperature within the refrigerator goes higher than the set point sensors alert the refrigerator compressor to engage, and the cooling cycle starts. The unit attracts the cool liquid refrigerant, pressurizes and condenses it, and increases the temperature, turning it into a gas.

2. The compressor guides the hot gas in the direction of the condenser coils on the back of the appliance, at which point it comes in contact with the lower air temperature in the room and reverts to a liquid state.

3. The cooled liquid then continues its trip towards the evaporator, making its way through the many coils on the inside of the appliance and top freezer section.

4. The coolant then absorbs the heated air from inside the refrigerator, thereby returning the temperature until it has reached the best set point.

5. The coolant then will evaporate, and turns back to a gas, and returns to the refrigerator compressor unit in order to then continue the cooling cycle.

Refrigeration is found in several applications and large appliances, this includes heat pumps, AC units, refrigerators and residential freezers. By extracting heat from one area and then relocating it to another the continuous cycle of refrigeration aids in cooling a house, creates a perfect environment for perishable food, and helps with the manufacturing and storage of a lot of different everyday products and materials.

Need Refrigerator Repair?

Does your refrigerator need repair? Time to schedule repair with Metro Appliance Repair.

Metro Appliance Repair is able to service nearly all common models of refrigerators – that includes commercial models, side-by-side and stand-alone.Our technicians in Silver Spring complete training to troubleshoot and repair problems with cooling, broken ice makers, condensation, puddles and leaks, lighting, touch controls, smart controls and various problems. We know all there is to know about refrigerator repair!