Reliable Direct Expansion Refrigeration Solutions for Industrial & Commercial Cooling

Industrial condensing units for cold rooms and refrigeration systems. Scroll and screw compressor options, Bitzer & Copeland available. OEM and private label supported.

What Is a Condensing Unit?

A condensing unit is the core component of a direct expansion (DX) refrigeration system, integrating the compressor, condenser, and essential control components into a single compact unit. Unlike chilled water systems, condensing units circulate refrigerant directly to the evaporator, making them ideal for cold rooms, freezers, food processing facilities, and industrial refrigeration applications.

Condensing units are widely used where precise temperature control, fast cooling response, and system simplicity are required.

Key Components of a Condensing Unit

A standard industrial condensing unit typically includes:

• Compressor (scroll, screw, or semi-hermetic)

• Condenser (air-cooled or water-cooled)

• Fan motors / cooling fans

• Receiver, filter drier, and sight glass

• Electrical control panel

• Safety protection devices (high/low pressure, overload)

Each component directly affects system efficiency, reliability, and service life.

Condensing Unit by Compressor Type

Scroll Compressor Condensing Units

Scroll condensing units are designed for small to medium cooling capacities and are widely used in commercial refrigeration and light industrial applications.

Key characteristics:

• Compact structure and low vibration

• Quiet operation

• High efficiency under stable load conditions

• Minimal maintenance requirements

Typical applications:

• Walk-in cold rooms

• Supermarkets and food storage

• Beverage cooling systems

• Light industrial refrigeration

Scroll condensing units are a cost-effective solution where space, noise level, and energy efficiency are key considerations.

Screw Compressor Condensing Units

Screw condensing units are engineered for medium to large cooling capacities and continuous industrial operation.

Key characteristics:

• Excellent stability under fluctuating load

• High energy efficiency at partial and full load

• Long service life

• Suitable for 24/7 operation

Typical applications:

• Large cold storage warehouses

• Food processing plants

• Industrial freezing systems

• Centralized refrigeration systems

Screw condensing units are preferred when reliability and long-term operational efficiency are critical.

Open-Type vs Box-Type Condensing Units

Open-Type Condensing Units

Open-type (open-frame) condensing units expose the main components on a structural steel base.

Advantages:

• Easy inspection and maintenance

• Flexible installation

• Lower initial cost

• Ideal for machine rooms and industrial plants

Recommended for:

• Industrial refrigeration plants

• Technical rooms with controlled environments

• Projects requiring frequent maintenance access

Box-Type (Enclosed) Condensing Units

Box-type condensing units are fully enclosed within a protective housing.

Advantages:

• Weatherproof and corrosion-resistant

• Lower noise emission

• Clean appearance for commercial installations

• Suitable for outdoor installation

Recommended for:

• Outdoor cold room installations

• Urban or noise-sensitive areas

• Export projects requiring standardized packaging

Condenser Types Explained

Air-Cooled Condenser

Air-cooled condensing units dissipate heat through ambient air using axial or centrifugal fans.

Features:

• No water consumption

• Simple installation

• Lower infrastructure cost

Common use cases:

• Small to medium refrigeration systems

• Locations with limited water resources

Water-Cooled Condenser

Water-cooled condensing units reject heat through circulating cooling water.

Features:

• Higher heat exchange efficiency

• Stable performance in high ambient temperatures

• Compact footprint

Common use cases:

• High-capacity refrigeration systems

• Industrial facilities with cooling towers or water loops

Compressor Brand Options

We offer flexible compressor brand configurations to match different project requirements and budgets.

Bitzer Condensing Units

• German-engineered reliability

• Excellent performance for medium and low-temperature applications

• Widely accepted in industrial refrigeration projects

Copeland Condensing Units

• High efficiency scroll compressor technology

• Strong global service network

• Ideal for commercial and light industrial refrigeration

Other international or cost-optimized brands are available upon request, depending on application and certification needs.

OEM & Private Label Manufacturing

We support OEM / ODM and private label condensing unit production, including:

• Customized casing design

• Client brand logo and nameplate

• Electrical configuration and voltage standards

• Refrigerant selection (R404A, R507, R448A, R449A, etc.)

• Packaging and documentation branding

Our factory is capable of handling large-volume private label orders for distributors, project contractors, and refrigeration brands worldwide.

Typical Applications

• Cold storage rooms and freezer rooms

• Food processing and meat packing plants

• Seafood and poultry refrigeration

• Pharmaceutical and chemical storage

• Industrial process cooling (DX systems)

Frequently Asked Questions (FAQ)

What is the difference between a condensing unit and a chiller?

A condensing unit is part of a direct expansion refrigeration system, where refrigerant cools the space directly. A chiller uses water or glycol as a secondary cooling medium and belongs to a chilled water system.

Can condensing units be used for freezer rooms?

Yes. Condensing units are commonly used for freezer rooms and low-temperature cold storage, provided the compressor and refrigerant are correctly selected.

Do you support custom voltage and refrigerants?

Yes. Condensing units can be customized for different voltage standards and refrigerants according to regional regulations and project requirements.

Are your condensing units suitable for outdoor installation?

Box-type condensing units are designed specifically for outdoor use, offering weather resistance and noise reduction.