Condensing Units

What Are the Most Important Components Of A Cold Storage Room?

Cold storage is a facility that’s used to store food items such as fruits, vegetables, fish and meat. The temperature of the rooms can be adjusted to meet the required specifications of the individual products being stored.

Cold storage facilities work by maintaining a temperature around freezing, which is ideal for storing all kinds of food. A cold storage room has several key components:

Condensing Units


The compressor is a big machine that makes cold rooms work. It’s what runs the refrigerant through the system and turns it into liquid, so that the cold room can keep things cool. The compressor needs a lot of energy to run. It uses up almost all of the power in a cold room. It takes hot air in and turns it into cold air.


A condensing unit uses the high-pressure refrigerant and circulating water from the compressor to remove heat from the system. It changes the refrigerant from a gas to a liquid by absorbing heat, which cools both the refrigerant and circulating water. A condenser is like a radiator for your car, which keeps it from overheating. The efficiency of your condenser determines how well your cold storage plant cools its contents.


Once the refrigerant leaves the condenser, it passes through a component called a receiver. The high-pressure liquid refrigerant is stored in the receiver. The refrigerant then goes to an expansion valve where pressure and temperature are lowered.

Expansion Valve:

A small valve inside the system called an Expansion Valve reduces the temperature and pressure of the refrigerant. To do this, a throttling device inside the valve restricts the flow of gas as it passes through. This causes friction that produces heat and lowers both the temperature and pressure of the gas. The result is that refrigerant in the Receiver will have a higher pressure than that in the Evaporator.


The Evaporator is a component that lowers the temperature of items in a refrigerator. It takes heat from the storage compartment or atmosphere that is supposed to be cooled, converts it into a gas by boiling the liquid refrigerant and then transfers the gas to a condenser. The gas cools while moving through the condenser and goes back to its liquid form. The liquid evaporates again and continues to cycle through this process until it reaches the desired temperature inside the refrigerator.


The cooled air is spread across the room by a fan, which creates a convection process. This cools down the room to the desired temperature.

Get in touch with Africhill today if you are looking for a manufacturer and supplier of high-quality cold rooms, freezer rooms, insulated panels, condensing units and blower coils in the African region.

Everything You Need To Know About Condensing Units

Also known as compressor unit, condensing unit is the most essential component of a cold room system. A compressor unit usually is a high side assembly of a refrigeration unit. It’s an assemblage of fan motor, condenser, compressor, controls and a mounting plate. It perform the function of a heat exchanger to cool down and liquefy the approaching coolant vapour into liquid and a fan for blowing outside air via the heat exchanger section to cool the inside of the refrigerant. Condensing units can be available in different designs and sizes ranging from small domestic appliance units to pretty large industry units employed in food & manufacturing processes.

Condenser units enable living & working in areas that were once known to be uninhabitable, heat pump offers efficient heating for temperate locales and refrigeration prolong the lifespan of unpreserved food.

Why buy condensing units from Africhill?

With years of work experience and a team of certified engineers, Africhill continues to pioneer the design & development of condensing units for different applications. We provide a complete range of indoor and outdoor condensing units for a wide range of commercial refrigeration applications.

Some of the top features & benefits of our condensing units include:

  • Integrated & innovating design
  • Simple and fast installation
  • Reduced maintenance time
  • Meeting all the global and regional regulations on energy & refrigerant
  • Large volume, high efficiency
  • Energy efficient
  • Compact structure, optimized space for room layout
  • Air cooled or water cooled condensing units for different applications.

We are offering many types of condensing units for a wide range of applications. Our condensing units are widely used in cold rooms, freezer rooms, hospitals, restaurants, canteens, fermentation rooms and other cold storage facilities. Irrespectiveof the job, we will have a cooling solution to suit your application. To know more about our condensing units, feel free to get in touch with us now!

When Do You Replace Refrigeration Condensing Units?

Commercial refrigeration units are used for different applications from medium to large. They require a sturdy and functional condensing unit. This unit contains components like fan motor, controls, compressor, condenser etc. It uses as a heat exchanger to cool down and condensate incoming refrigerant vapor into liquid. The refrigeration system has top quality fan that helps in blowing surrounding air through the heat exchanger to cool the refrigerant present inside.

Have you decided to replace condensing units instead of fixing them? Fixing problematic issues can be a bit hassle. There are so many signs your condensing units need replacement. Some of the best signs are discussed below:

Different factors can result in external condensing unit to stop working. The common reasons include improperly working compressor and coil. Compressor failure is one of the most common reasons behind the replacement.

Compressor is the heart or engine of your commercial refrigeration unit. The overall cost of compressor replacement and installation will outweigh the cost of a new condensing unit. The cost remains constant in most residential systems.

You should focus on preventive maintenance regularly, if you really want to avoid failing condenser. It’s highly suggested to take proper care and maintain the condensing unit to ensure the durability and cost savings. This way, you won’t need to replace the system often.

Usually you will see failures because of untimely maintenance and dirty condenser coils. They are major reasons behind the failures. However, replacing a compressor is expensive especially if your condensing unit is an R-22 system.

What are the factors behind condensing unit failure?

  • When making a decision on a condenser which is holding on barely, you should consider the operational time and working condition.
  • You should pay more attention to the time, electric issues and use which significantly impact on your unit’s working capacity. If one of these parts doesn’t come under the guarantee period, it’s better to contemplate the entire unit replacement.
  • If you’re using condensing units having compressor failures, you should fix them better. It’s suggested to replace the unit as soon as possible.

Why do you replace condensing unit?

Please keep in mind that repair cost is more than the price of a new unit. You should think about thoroughly and do research on replacement options.

It’s better to change the system to adapt the latest technology and advancement, if you’ve the more aged or ten years old equipment. By replacing the unit, you will get energy savings, possible refunds and assurance of another system.

Most commercial facilities owning refrigeration units put off the decision to replace the equipment instead of fixing them. They decide to consider more consistent and highly efficient equipment with state-of-the-art features for better use.

Bottom Line –

Do you want to learn more about commercial refrigeration systems and condensing units? Feel free to contact Africhill as soon as possible. We’ll help you through the installation and repair needs. For more information, please visit our website today at

When To Contact Africhill To Change Or Repair Condensing Units

While deciding to change condensing units rather than fixing them very well may be an irritating one. We at Africhill have rules set up to help proprietors with making such a decision to some degree less problematic.

Causes of failure of condensing unit 

Various things can cause an external condensing unit to stop working. The most broadly perceived are the failure of compressor and coil.

Compressor failure is, by far, the most unreasonable portion to fix. The compressor is the engine or heart of the system. The certified cost of replacing a compressor and installing work will consistently outperform the price of a new condensing unit. This remains consistent in most residential units.

The absence of preventive maintenance is routinely the crucial justification condenser unit fails, as we as specialists have seen during our work tenure. However, having proper care can be a modest technique to prolong unit life and help save money as there will be less chance of replacing the condensing unit.

We usually notice failures because of the absence of maintenance, and dirty condenser coils have all the earmarks of being a tremendous ally of failures. Failures can run from as catastrophic as a condenser to have a non-functional capacitor, and the capacitor is a regular fix. On the other hand, compressor replacement is the most exorbitant, especially if the unit is an R-22 system.

Deciding the time of death 

While deciding if a unit is barely holding on, we as specialists agree that run time and working conditions are the main factors to consider.

Age, electrical issues, and utilization — especially in a saltwater area — all influence the unit’s existence. If one of these parts is out of the guarantee period, it is rational to contemplate replacing the entire unit.

For more aged units experiencing compressor failures, we, as specialists, feel there is no reason to fix it. Instead, it is better to change the unit is a wiser decision. Along these lines, notwithstanding the way that you have an excessively costly compressor, yet you have other problems you cannot analyze until you change the compressor.

The critical choice 

When the cost of a fix is more than 40% of the price of a new unit or the unit is more than ten years old, by then, it very well might be an excellent thought to research the option of replacement.

Changing advancement may be the focal factor for equipment ten years old or more aged since the saving on energy, possible refunds, and the assurance of another system can be progressively applicable. A couple of customers generally need to avoid an emergency, which is one strategy for doing such.

The changing business sector 

During the Great Recession, various property owners put off the decision to change equipment and chose instead to fix it. However, that is starting to change overall, as property owners decide to replace considerably more consistently and move to higher-efficiency equipment with more options.

To have the best condensing units, it is astute to depend on us at Africhill. We have the experience and information to customize our units as per your particular prerequisites.

Key Function Of Condensing Units In Freezing Units Or Cold Rooms

Most commercial entities are suffering some of the hottest weather in summer! Hence, a well-functioning freezer room or cold rooms are the absolute necessity to combat the heat and high humidity. It is also essential to keep the stock fresh for longer. Most modern freezer room or cold rooms units have a lifespan of decades. Still, even the well-maintained freezer rooms may sometimes fail to provide enough cold air to keep the interior of the cold storage and hamper the stocked items to remain fresh.

All the freezer rooms or cold rooms rely on several components to run effectively and maintain the prescribed temperature inside. The condensing units are considered as the most significant components among them. The condensing unit accomplishes several different tasks as it runs. The more you know about the condensing units in your freezer rooms or cold storage system, the faster you will know the potential problems. If the freezer room or cold rooms are releasing, then it is not at all welcoming. But always it may not indicate any serious problem. Do you want to know a few things about the components inside the freezer rooms or cold storage rooms? Read on the critical jobs performed by condensing units in such freezer rooms.

The condenser coil is one of the prime components in your freezer room or cold rooms system with a useful function to remove the heat from outdoors. Specks of dirt or blocked condensers are one of the most frequent service problems in commercial refrigeration today. If the condenser coil rejects less heat can be rejected to the surrounding air, the temperature will start to accumulate in the condenser and make it difficult to reject the heat from the condenser as well. The accumulation of heat in the condenser will make the condensing temperature go high.

Sometimes you come across the condensing unit that has started to become overrun by dust, dirt, and debris. You may also see drier lint wastage things stuck to the coil as well. Any small or large pieces of such thing escaping the vent to get sucked into the condenser coil. It will partially block the condenser’s air flow, which causes high condenser pressures and inefficiencies.

Refrigerants are chemical compounds and fully saturated liquid that alternately compressed and condensed into a liquid. It will then permitted to expand into a vapor or gas as they are pumped through mechanical refrigeration. Refrigerants also evaporate or boil at much lower temperatures than water. It allows them to extract the heat at a more rapid rate than the water. Refrigerants can vary, and it is based on the freezing equipment such as low-temperature freezer, or industrial chiller, or commercial cooling equipment.

One of the most common causes of the commercial freezing system for blowing warm air is a lack of refrigerant or in the proper flow of refrigerant. This can also cause ice to build upon your evaporator coil and stops the cycle. If the thing continues, then the freezer room temperature may not behave properly and give the ice on your evaporator coil a chance to melt. Hence, low refrigerant can lead to a cycle of warm air and icing on your evaporator coil. As the system ages, however, wear and tear will make it harder and harder time cooling the refrigerant to this level.

Condensing units located on the proper side help you save from many issues. For instance, if it is kept in the shaded area of a building may result in maintaining the condensing pressures down. Every condensing unit has fans that discharge air from their sides. So keep in mind not to face the fans directly into the prevailing wind direction. Rather, it will hinder the airflow out of the condensing unit on windy days.

Commercial refrigeration solutions for medium to large capacity applications need a sturdy condensing unit. It should work as an assembly of the refrigeration system, and it comprises components like fan motor, controls, compressor, condenser, and finds use as a heat exchanger for cooling down and condensate incoming refrigerant vapor into liquid. The presence of our superior functioning fan allows blowing outside air through the heat exchanger for cooling refrigerant inside. Some of our freezer rooms are available in different designs and sizes. Also, our products are backed by extensive research-based design and developments.

Remember, regular maintenance is by far the best way to prevent any of the above problems from happening to your freezer rooms or cold rooms. For more information about our condensing units or its repair or installation call at +27 (0) 11 979 1885 or +27 (0) 11 396 2402 today! We ensure your commercial cold rooms are getting the upkeep it needs!