
Your Right Bitzer Condensing Unit Supplier
30+ Years of experience in designing and manufacturing the Bitzer Condensing Unit.
Miracle’s professional technical team can customize the most suitable Bitzer condensing unit for your project based on accurate calculations and scientific design.
Miracle has the ability for R&D to manufacture the Bitzer condensing unit to be customized for your project.
In addition, we also provide OEM service and one-stop service, including evaporator, compressor, and so on.
For more details, please contact us now.
Bitzer Semi-hermetic Condensing Unit
- Heat exchanger capacity: 7.5KW-18.4KW
- Compressor Model: 2FES-3Y, 2EES-3Y, 2DES-3Y, 2CES-4Y, 4FES-5Y, 4EES-6Y, 4DES-7Y
- Applicable temperature of cold storage: -25~+5℃.
- Condensing temperature 50℃, subcooling degree 0K
- Power: 3-7HP
- Heat exchanger capacity: 7.5KW-18.4KW
- Compressor Model: 2CES-3Y, 4FES-3Y, 4EES-4Y, 4DES-5Y, 4CES-6Y, 4VES-7Y
- Applicable temperature of cold storage: -30~-15℃
- Condensing temperature 50℃, subcooling degree 0K
- Power: 3-7HP
- Heat exchanger capacity: 21KW-51.3KW
- Compressor Model: Bitzer 4CES-9Y, 4VES-10Y, 4TES-12Y, 4PES-15Y, 4NES-20Y
- Applicable temperature of cold storage: -25~+5℃
- Power: 9-20HP
- Size: 1270*850*1420
- Heat exchanger capacity: 21KW-51.3KW
- Compressor Model: Bitzer 4TES-9Y, 4PES-12Y, 4NES-14Y, 4HE-18Y, 4GE-23Y
- Applicable temperature of cold storage: -25~+5℃
- Power: 9-23HP
- Size: 1270*950*1370
- Heat exchanger capacity: 13.7KW-76.8KW
- Compressor Model: Bitzer S4T-5.2Y, S4N-8.2Y, S4G-12.2Y, S6G-16.2Y, S6H-20.2Y, S6G-25.2Y, S6G-30.2Y
- Applicable temperature of cold storage: -40~-25℃
- Power: 5-30HP
- Size: 1030*800*620, 1270*850*1170, 1270*950*1370, 2060*890*1970
Bitzer Hermetic Condensing Unit (2)
Evaporator for Bitzer Condensing Unit
We are your one-stop solution supplier for Bitzer Condensing Units.
Miracle evaporator can be used for preservation (high-temperature applications), refrigeration (medium-temperature applications), and quick freezing (low-temperature applications).
The types of Miracle evaporators include dual discharge, angled type, Cubic Air Cooler, etc.
For more information, please get in touch with us now.

Bitzer Compressor Condensing Unit Application

Why Bitzer Condensing Units
- Catalog PDF
- Authenticity Guarantee
- Axial Fans
- Solenoid Valve
- Gallery
Check Bitzer Condensing Units Catalog PDF Now

We promise to provide you with 100% Original Bitzer compressors, pay 10 for each fake.
There are two sources of Bitzer compressors used by Miracle. One is the Bitzer compressor imported from Germany, and the other is the only production factory officially authorized by BITZER- it’s called BITZER China.
All Bitzer compressors purchased from Miracle can go directly to the office to verify their authenticity.

Get the AC axial fans now. Check the axial fan catalog pdf

Get the Solenoid Valve, Check the Solenoid Valve catalog pdf now

Focus on the details to produce reliable quality Bitzer condensing units!
For more types of air-cooled condensing units and water-cooled condensing units, please contact us now!
In addition, we can also provide you with more personalized customization services, so that you have more cost-effective choices.
For example, in the configuration of the Bitzer condensing unit, except for the compressor, you have two choices for other components:
◮ Domestic refrigeration accessories.
◮ Refrigeration accessories of world-renowned brands.
We provide you with the most cost-effective Bitzer Condensing Unit.
The BITZER condensing unit replacement parts that Miracle has selected for you all have experience in OEM production for well-known brands, so their quality reaches the level of international brands.
Moreover, they are well-reputed products that have been verified by the market for many years and have been exported to various markets around the world for many years.
If you want to know the specific situation of each accessory, please feel free to contact us.
If you are in the business of selling refrigeration parts, please check below Bitzer condensing unit parts below, including the refrigeration valve, rotalock valve, ball valve, sight glass, and check valve.
Those parts are all used on Bitzer condensing units, with the water-cooled condenser forming the complete units.
Miracle also provides you a better choice to install the Bitzer condensing unit with no welding connection. Contact us for more details.
Small Bitzer Condensing Unit- Single Fan
Miracle provides a small Bitzer condensing unit with a semi-hermetic compressor to meet your demand for a small cooling capacity.
Bitzer Condensing Unit with Air Cooled
As a good supplier for an Air-cooled Bitzer condensing unit, we absolutely can provide the standard Bitzer condensing unit and a customized condensing unit to fit your various requirements.
Bitzer Condensing Unit with Water Cooled
Water-cooled Bitzer condensing units are another type of condensing unit compared with air-cooled condensing units. It uses a water-cooled condenser to replace the air-cooled condenser.
Water-cooled condensing units use water for cooling, and the cooling effect of the water-cooled Bitzer condensing units is better.
Bitzer Condensing Unit with Parallel Unit
A Parallel Bitzer condensing unit is a big unit with two or more Bitzer compressors in one refrigeration circuit.
The parallel Bitzer condensing unit is flexible, easy to control, high efficiency, and energy-saving.
Medium High Temperature Bitzer Condensing Unit
Bitzer screw parallel condensing unit adopts high-efficiency Bitzer screw compressor and water-cooled shell condenser, more suitable for the application that need for big cooling capacity.
Bitzer screw condensing unit is more reliable, with low noise and a pretty appearance!
Low Temperature Bitzer Condensing Unit
A water-cooled Bitzer condensing unit is widely used for low-temperature applications.
Water-cooled Bitzer condensing units consist of a Bitzer compressor, water-cooled condenser, pressure vessel products, controllers, and other refrigeration parts.
The Water-cooled Bitzer condensing unit is normally designed according to your project and requests.
If you are doing business in cold room projects, such as seafood cold storage, meat cold storage, flowers cold storage, food cold storage, medicine cold storage, mini cold storage, etc.
For the big-sized cold room, the water-cooled Bitzer condensing unit is a good choice for you.
Bitzer’s water-cooled condensing unit has a better cooling capacity and very good stability.
But because it has a matched cooling tower, so more suitable for places that have enough space and big cooling capacity, which means a big-sized cold room, also suitable for buildings, factories, etc.
When a Bitzer condensing unit piston compressor is in operation, the crankshaft of the compressor starts to rotate.
The Bitzer condensing unit compressor piston will convert the rotational motion of the compressor crankshaft into an up-and-down motion through the steel connection of the connecting rod.
While the Bitzer condensing unit compressor piston is in the cylinder wall, the cylinder head and the piston top surface formed by the working volume will change.
Bitzer condensing unit piston compressor piston from the cylinder head downward movement, the working volume in the cylinder gradually increase, and vice versa, the working volume decreases.
When the compressor gas enters the cylinder along the inlet tube, the gas in the compressor pushes the Bitzer condensing unit compressor inlet door open until the compressor piston position reaches the lower stop, at which time the compressor inner volume reaches its maximum.
The compressor inlet valve starts to close.
When the piston of the Bitzer condensing unit piston compressor moves upward, the working volume in the compressor cylinder decreases, and the air pressure in the cylinder rises.
When the pressure in the cylinder of the compressor reaches the set discharge pressure value, the compressor discharge valve opens and the gas is discharged from the cylinder.
When the piston of the Bitzer condensing unit compressor moves to the upper stop position, the compressor discharge valve closes.
When the piston of a Bitzer condensing unit piston compressor moves in the opposite direction again, the work process begins to repeat.
In short, every time the crankshaft of a Bitzer condensing unit piston compressor rotates, the piston moves back and forth to achieve the process of gas intake, compression, and discharge in the cylinder.
Thus completing the working cycle of the compressor.

1. The applicable pressure range of the Semi-hermetic reciprocating compressor is wide, and the required pressure can be reached regardless of the flow rate;
2. The Semi-hermetic reciprocating compressor has high thermal efficiency and low unit power consumption;
3. Strong adaptability, that is, a wide exhaust range, and is not affected by pressure, and can adapt to a wider pressure range and cooling capacity requirements;
4. The maintainability of the Semi-hermetic reciprocating compressor is strong;
5. Bitzer semi-hermetic reciprocating compressors have low requirements for materials and use ordinary steel materials, which are easier to process and lower in cost;
6. The Bitzer semi-hermetic reciprocating compressor is relatively mature in technology and has accumulated rich experience in production and use;
7. The semi-hermetic condensing unit system of the piston compressor is relatively simple.
Bitzer Condensing Unit Structure Comparison
Bitzer condensing unit with water-cooled:
Use water to cool and take away heat to produce cold water.
It adopts a water cooling method, water pump plus cooling tower, and circulation pipeline to cool the unit.
Bitzer condensing unit with air-cooled:
use air to exchange heat and absorb heat, to produce cold water and hot water.
From the perspective of the Bitzer condensing unit with water-cooled installation, it can be divided into two types: built-in water cooling and external water cooling.
For built-in water cooling, it is mainly composed of radiator water pipes, water pumps, and sufficient water sources.
This is destined to have a large “volume” of most water cooling systems and requires sufficient space inside the chassis.
Therefore, the Bitzer condensing unit with air-cooled only needs an air-cooled condenser or fan.
The water-cooled Bitzer condensing unit with water-cooled needs to be equipped with a cooling tower, water pump, and circulation pipeline.
Water cooling is more complicated than air cooling in terms of structure.
Bitzer Condensing Unit Investment Comparison
The initial investment of the Bitzer air-cooled unit is a little higher than the Bitzer water-cooled unit, and the Bitzer condensing unit with air-cooled cooling power consumption is also slightly higher than that of the Bitzer condensing unit with water-cooled.
However, the annual comprehensive cost of the air-cooled Bitzer condensing unit with air-cooled is basically the same as or slightly lower than that of the water-cooled Bitzer condensing unit with water-cooled.
The longer the annual operating time of the Bitzer condensing unit with water-cooled is the more beneficial it is to the Bitzer condensing unit with air-cooled, and the initial investment payback period of the Bitzer condensing unit with air-cooled is shorter than that of the Bitzer condensing unit with water-cooled.
The main factor affecting the water-cooled Bitzer condensing unit with the water-cooled cost is the amount of supplemental cooling water and later maintenance and management costs.
Bitzer condensing unit with air-cooled is suitable for small and medium-sized systems where water sources are in short supply;
The longer the annual operating hours, the more advantageous it is to use a Bitzer condensing unit with air-cooled;
The annual overall cost of Bitzer condensing units with air-cooled is lower than that of Bitzer condensing unit water-cooled systems.
If water-cooled Bitzer condensing unit systems are managed properly and the water supplement is controlled below 3%.
Bitzer water-cooled condensing unit will have an advantage over Bitzer air-cooled condensing unit.

The Air-cooled Bitzer condensing unit does not use water as the cooling source, saving water resources. The equipment utilization rate of the Air-cooled Bitzer condensing unit is higher than that of the water-cooled Bitzer condensing unit.
An air-cooled Bitzer condensing unit can be installed outdoors, roof, balcony, and in other vacant areas of existing buildings without the need to build a special Air-cooled Bitzer condensing unit room, which does not occupy adequate floor space and saves civil construction investment.
Cooling in summer and heating in winter, No need for boiler room and facilitating the construction of Air-cooled Bitzer condensing unit projects.
The Air-cooled Bitzer condensing unit does not use a cooling water pump or cooling tower, plus it also does not use a cooling water pipe network and water treatment equipment, saving this part of the investment and operating costs.
A Bitzer air-cooled condensing unit saves electricity in winter, and a Bitzer condensing unit heat pump heating saves about two-thirds of electricity compared to direct electric heating.
The longer the Air-cooled Bitzer condensing unit runs, the more advantageous the water-cooled Bitzer condensing unit becomes, and at the same time, there is no pipe network for the water cooling system.
So the Air-cooled Bitzer condensing unit is less expensive to use.

There is no specific model for installing Bitzer condensing units in large buildings.
It is a matter of the structure of the customer’s building and the implementation of the plan.
Regardless of the form of equipment used, it is necessary to actively cooperate with the work of related mechanical and electrical professions such as architecture and structure.
Miracle, as a professional Bitzer condensing unit design solution provider, needs to do the following according to the specific situation:
The most important thing for the installation of the Bitzer condensing unit is to combine the actual situation of the project, consider all factors comprehensively
And meets the principle of achieving the best use and economy while ensuring technical feasibility, safety, and reliability, and realizing the wishes of investors.
The unit layout should fully consider the Bitzer condensing unit use environment, space
The Bitzer condensing unit’s usage environment, space, different cities, and regions.
The cooling capacity of the Bitzer condensing unit should be fully considered when arranging the Bitzer condensing unit.
The larger the building, the more water-cooled units are preferred, and the smaller the building, the best choice is air-cooled units.
In addition, it is necessary to consider whether it is possible to install cooling water towers, the distance from the water source and other factors, for more details, please contact us now.
◈ The plastics industry
◈ Electronic industry
◈ Machinery industry
◈ Food manufacturing industry
What the function of Compressor Crankshaft

The role of the Bitzer condensing unit compressor crankshaft is to generate rotational forces and drive the connection up and down.
The mechanical power of the piston compressor is transmitted by the Bitzer condensing unit compressor crankshaft.
Bitzer condensing unit compressor crankshaft movement is complex, unevenly stressed, and subject to impact from multiple angles.
The working conditions of Bitzer condensing unit compressor crankshafts are more severe than those of connecting rods.
So the wear resistance, strength, and stiffness of Bitzer condensing unit compressor crankshafts are subject to higher requirements.
What the function of Compressor Connecting Rod

The Bitzer compressor connecting rod has three parts.
The Bitzer condensing unit compressor part connects the Bitzer condensing unit compressor piston and the Bitzer condensing unit compressor crankshaft.
The main function of the Bitzer condensing unit connecting rod is to convert the force generated by the crankshaft into the vertical force of up and down movement and act on the Bitzer condensing unit piston.
What the function of Compressor Piston Pin

Piston pin – Bitzer condensing unit compressor piston plays a vital role in compressor parts, its main function is to connect the Bitzer condensing unit compressor piston with the Bitzer condensing unit compressor connecting rod by a flexible connection.
The quality of the Bitzer condensing unit compressor piston pin determines whether the Bitzer condensing unit compressor can operate reliably or not.
What the function of Compressor Piston Ring
Piston rings- The function of rings is to increase the internal pressure of the Bitzer compressor.
Piston ring in the installation of a certain degree of care, Bitzer condensing unit The piston ring of the compressor should not be installed randomly.
If installed incorrectly, it may lead to the compressor working poorly and other failures.
What the function of Valve and Shaft Seal
The compressor gas valve is created by the operating needs of the compressor.
When the Bitzer compressor starts to operate, a hole is required to achieve the passage between the high pressure of the Bitzer condensing unit compressor and the low pressure of the Bitzer compressor.
Thus the Bitzer compressor air valve is required to absorb the high temperatures from the Bitzer compressor while it is operating.
The design of the compressor air valve is particularly critical because of the high temperature and pressure that the compressor cylinder head is subjected to during operation.
Typically, Bitzer compressor valves are designed in a one-out, one-in structure, where one valve draws in the refrigeration media from the Bitzer compressor and the other valve sucks in the high-pressure refrigerant generated inside the compressor.
The other valve discharges the high-pressure refrigerant generated inside the compressor.
Yes, when designing the Bitzer condensing unit for your project, we will provide the specifications and drawings for you to do the final confirmation.
Yes, Miracle has more than 20 years of history of manufacturing the Bitzer condensing unit in China.
Miracle supplies air-cooled and water-cooled Bitzer condensing units for you.
Yes, we have our technical team to calculate and design the Bitzer condensing unit according to your project requests.





























