How Does a Refrigerator Work?

If you are like the majority of homeowners you do not give too much thought to the parts of a refrigerator unless it shuts down, or before it is time to replace it. In order to get the most use possible from this important appliance it can be useful to know exactly how a refrigerator keeps food and drinks cold—and P&G Baltimore Appliance Repair is here to explain.

Read below to learn everything you might need to know about how a refrigerator works, how it cools your food and if it is the right time to reach out to refrigerator repair Baltimore.

Parts of a Refrigerator

There are not many homes that do not feature a refrigerator in the kitchen. It has been a must-own household appliance for several years. A residential refrigerator is able to store your food and drinks at the best temperature, to prevent rotting and limit harmful bacteria. The cycle of refrigeration starts by transferring the heat from inside of the appliance to the exterior, relying on the principles of evaporation and condensation.

The main parts of your refrigerator are. For questions or service call P&G Baltimore Appliance Repair:


The refrigerator compressor is a combo of a pump and motor, and it’s need for circulation of refrigerant throughout the system.
A compressor is a very important piece of a refrigerator. You should call on a professional service if the compressor is not working.


The condenser is found on the rear outside wall of the appliance and helps to release the heat collected within the refrigerator out into the air.


The evaporator is housed in the inside of the refrigerator where it absorbs warmth held inside of it, thereby lowering the temperature inside the refrigerator.

Once an evaporator stops working, it’s time to find a professional. You should not wait too long.

Expansion Device

Liquified refrigerant is transferred within a capillary tube that works as an expansion device to cool the gas, thereby turning it into a liquid.


The thermostat helps regulate the temperature in the interior of a refrigerator, engaging the cooling cycle when it is necessary.

A thermostat in a refrigerator is very prone to issues. Troubleshoot and call a technician in Baltimore for service right after a problem happens.

How Does Refrigeration Work?

1. Once the temperature inside the refrigerator is above the set point sensors alert the compressor to begin, and then the next cooling cycle starts. The appliance attracts the cold liquified refrigerant, condenses and pressurizes it, and increases the temperature, turning it into a gas form.

2. The refrigerator compressor guides the hot gas towards the refrigerator condenser coils on the rear of the refrigerator, at which point it comes in contact with the lower temperature in the room and transforms to a liquified form.

3. The cool refrigerant then continues on its trip to the evaporator, traveling through the coils on the inside of the refrigerator and freezer section.

4. The coolant absorbs the warm air from inside the refrigerator, thereby cooling the temperature until it has reached the desired set point.

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

Refrigeration is used in a number of applications and household appliances, this includes heat pumps, AC units, refrigerators and freezers. By extracting heat from a single location and then transferring it to a different one the cycle of refrigeration aids in cooling a home, provides a optimal space for perishable food, and also helps with manufacturing and storage of many different everyday products and materials.

Need Refrigerator Repair?

Think your refrigerator need professional attention? You can schedule an appointment with P&G Baltimore Appliance Repair.

P&G Baltimore Appliance Repair can fix most major brands and models of refrigerators – that includes commercial models, stand-alone and side-by-side.Our experienced appliance repairmen in Baltimore complete training to troubleshoot and repair cooling issues, broken ice makers, problems with condensation, water puddles and leaks, bulbs, digital panels, smart systems and other problems. We know all there is to know about refrigerator repair! We really do!