DX Split Unit
SongXin HVAC designs and manufactures DX split units built for commercial buildings, offices, retail spaces, restaurants, service rooms, technical spaces, modular buildings, and project-based HVAC applications where flexible equipment placement and dependable direct expansion cooling performance are required. With separate indoor and outdoor units connected by refrigerant piping, DX split systems give customers the installation freedom to position air delivery exactly where it is needed — without the complexity or cost of a centralized chilled water plant.
From office suites and retail stores to equipment rooms, light industrial support spaces, temporary site facilities, and OEM / ODM split air conditioning programs — SongXin HVAC DX split units help contractors, project managers, distributors, and brand partners deliver practical, adaptable, and room-ready cooling solutions across a wide range of building types and project environments.
Indoor Unit
Outdoor Unit
Not every building needs a central chilled water plant or a packaged rooftop system. Many commercial and light industrial projects require a cooling solution that is simpler to install, more flexible in equipment placement, and better matched to room-level or zone-level cooling demands. DX split units are designed precisely for this type of application.
Because the indoor and outdoor sections are physically separated and connected by refrigerant piping, DX split systems give customers meaningful freedom in how and where equipment is positioned — the indoor unit can be placed close to the conditioned space, while the outdoor unit can be installed on an exterior wall, rooftop, balcony, or any suitable outdoor location. SongXin HVAC DX split units are engineered for customers who need practical, reliable, and installation-flexible cooling for commercial, public-use, light industrial, and temporary project applications.
A DX split unit is a direct expansion air conditioning system consisting of two physically separate components: an indoor unit that cools and delivers conditioned air to the room or zone, and an outdoor unit that rejects heat to the external environment through refrigerant circulation. The two units are connected by refrigerant piping and electrical wiring, allowing them to be installed at different locations within and outside the building.
This separated structure makes DX split units one of the most flexible and widely applicable cooling solutions for commercial and light industrial buildings — the indoor unit can be positioned for optimal air distribution within the conditioned space, while the outdoor unit can be placed wherever outdoor installation is practical and accessible.
Key technical characteristics of DX split units include:
SongXin HVAC DX split units are engineered to deliver installation flexibility, reliable direct expansion cooling performance, and broad commercial project compatibility across diverse building types and room configurations.
The physically separated indoor and outdoor unit structure allows equipment to be positioned independently — giving contractors and building owners greater freedom in installation layout, air delivery direction, and outdoor unit placement.
Discuss Your Installation Layout RequirementsDeliver efficient refrigerant-based air conditioning for rooms, zones, and selected commercial or technical spaces — with consistent cooling output across a range of ambient conditions and building use types.
Explore DX Cooling Performance Options
Suitable for offices, retail stores, restaurants, service rooms, technical spaces, modular buildings, and light commercial projects — adaptable to a wide range of room sizes, layouts, and cooling requirements.
View All Compatible Building ApplicationsSupport targeted cooling for individual rooms, selected zones, or specific building areas without requiring a full central chilled water plant or large-scale mechanical system infrastructure.
Review Your Room Cooling Requirements
A commercially versatile and high-volume product category for brand partners and distributors targeting split air conditioning, light commercial HVAC, and flexible cooling markets with private-label product programs.
Discuss OEM / ODM CooperationSongXin HVAC DX split units are deployed across a wide range of commercial and light industrial environments where flexible installation and room-level direct expansion cooling provide the most practical HVAC solution. Below are the primary application environments where DX split unit technology delivers the greatest installation and operational value.
Support reliable comfort cooling for private offices, open-plan workspaces, meeting rooms, reception areas, and business service centers — with flexible indoor unit placement that adapts to different office layouts and room configurations.
View Office and Business Space Cooling SolutionsProvide practical and efficient air conditioning for shops, boutiques, showrooms, small supermarkets, and customer-facing commercial spaces where consistent indoor comfort directly influences customer experience and dwell time.
View Retail and Commercial Cooling SolutionsSupport comfortable indoor conditions for dining areas, café seating zones, service counters, and small hospitality environments where reliable cooling is important for both customer comfort and staff working conditions.
View Restaurant and Hospitality Cooling Solutions
Provide focused, reliable cooling for server rooms, control rooms, electrical equipment rooms, utility spaces, and other technical support areas where maintaining safe operating temperatures is a facility requirement.
View Technical Room Cooling Solutions
Support fast-deployment cooling for temporary site offices, modular buildings, construction project facilities, prefabricated structures, and emergency-use spaces where installation flexibility and quick commissioning are priorities.
View Temporary and Modular Cooling Solutions
Support brand partners and distributors building private-label or market-specific DX split unit product lines for light commercial air conditioning, split HVAC, and flexible cooling markets.
Start OEM / ODM DiscussionDX split units deliver the highest value when a project requires practical room-level or zone-level cooling with flexible equipment placement — and when the scale or budget of the project does not justify a centralized chilled water system or packaged rooftop installation. They are especially well-suited for situations where only selected spaces need cooling, where indoor unit placement needs to be tailored to room layout, or where outdoor unit location is constrained by building structure or site conditions.
They are widely applicable across light commercial buildings, retail and food service environments, office suites, technical support rooms, modular facilities, and temporary project structures. For distributors and OEM / ODM partners, DX split units represent one of the broadest and most commercially active product categories in the HVAC market — with consistent demand across multiple building sectors and geographic markets.
SongXin HVAC DX split units are designed to fulfill multiple room-level and zone-level cooling functions, adapting to indoor unit configuration, project layout, and application-specific requirements.
Deliver targeted direct expansion cooling to individual rooms, offices, retail spaces, and defined building zones — providing consistent and controllable indoor comfort without requiring central plant infrastructure.
Learn More
Reject heat to the outdoor environment through a separately installed outdoor unit — keeping heat rejection equipment outside the occupied space and allowing more practical indoor unit placement.
Learn MoreMaintain comfortable indoor temperature and air quality conditions for occupants in retail, office, restaurant, service, and light industrial building environments throughout the cooling season.
Learn MoreProvide reliable local cooling for server rooms, control rooms, electrical equipment spaces, and other technical areas where maintaining safe and stable operating temperatures is a non-negotiable facility requirement.
Learn MoreSelecting the correct DX split unit requires evaluating both room-specific and system-level parameters. Cooling capacity, room size and layout, building type, indoor unit style and air delivery method, outdoor unit installation location, refrigerant piping distance, indoor airflow requirements, fresh air demand, local ambient temperature range, noise sensitivity, power supply, control method, and operating schedule all influence the right product direction.
A small private office has different split unit requirements from a restaurant dining area, retail showroom, server room, or modular site facility. Selecting a DX split unit based on room area alone — without evaluating airflow distribution, piping distance, outdoor unit placement constraints, and ambient temperature conditions — frequently results in systems that underperform or create installation complications on-site.
SongXin HVAC works with customers to evaluate these parameters before product selection. By understanding the room function, installation layout, and real cooling demand, we help customers identify the most suitable DX split unit configuration and indoor unit type for their specific project requirements.
For HVAC distributors and trading companies, DX split units serve one of the largest and most consistently active segments of the commercial air conditioning market. They are suitable for customers across virtually every light commercial building type — from offices and retail stores to restaurants, service buildings, technical rooms, and temporary facilities — making them an essential product category for any distributor serving commercial HVAC markets.
The product logic is clear and widely understood: flexible installation, room-level cooling, separated indoor and outdoor units, and no central plant requirement. SongXin HVAC supports distributor partners with product selection guidance, application-specific communication, export documentation, category planning, and OEM / ODM cooperation — helping partners build stronger split HVAC portfolios and grow their presence across multiple commercial market segments.
DX split units are one of the most commercially active and broadly applicable OEM / ODM product categories in the HVAC industry. They serve light commercial buildings, retail environments, office spaces, service facilities, technical rooms, modular structures, and temporary cooling applications — markets where brand recognition, product reliability, and competitive pricing directly influence purchasing decisions across high transaction volumes.
SongXin HVAC supports OEM and ODM partners through product category planning, capacity and configuration discussion, private-label branding support, market-specific positioning, technical documentation preparation, and long-term supply cooperation. We help partners develop DX split unit product lines that align with target-market building requirements, local climate conditions, regulatory standards, and refrigerant compliance requirements.
Whether you are building a new split air conditioning brand, expanding an existing HVAC product portfolio, or developing market-specific DX split unit solutions for a particular region or commercial building sector, SongXin HVAC provides the manufacturing capability, product breadth, and cooperation flexibility to support your program at scale.
Depending on installation method, building type, air distribution requirements, and application conditions, customers evaluating DX split units may also consider these related SongXin HVAC DX and packaged HVAC products.
A fully packaged rooftop-mounted air conditioning system for commercial buildings where all HVAC equipment is consolidated into a single outdoor rooftop installation.
View DX Rooftop Unit
Designed for concealed ducted air distribution in commercial, office, and project-based HVAC applications where indoor unit visibility is a design or architectural consideration.
View Ducted DX UnitA complete self-contained packaged cooling solution for commercial, industrial support, and temporary applications requiring flexible placement and straightforward installation.
View Packaged Air Conditioning UnitDesigned for temporary structures, event spaces, emergency response sites, and project-based cooling needs requiring rapid deployment and portable installation flexibility.
View Tent Air ConditionerSongXin HVAC is chosen by contractors, building owners, distributors, and OEM partners because we combine reliable DX split unit products with genuine application knowledge, installation-focused product guidance, and international cooperation capability across a broad range of commercial and light industrial markets.
We help customers evaluate DX split units based on room function, real cooling load, indoor unit type, equipment placement options, piping distance, and project-specific installation constraints — not just nominal capacity.
Discuss Your Room and Installation RequirementsOur DX and packaged product range covers split units, rooftop units, ducted systems, packaged air conditioners, and temporary cooling solutions — giving customers and partners a comprehensive single-source packaged HVAC supply option.
Explore Full DX and Packaged HVAC Portfolio
We support distributors and private-label partners in developing DX split unit products tailored to target markets, brand requirements, refrigerant compliance standards, and commercial building application needs.
Discuss OEM / ODM Cooperation
We support global customers with product communication, technical documentation, certification support, export packaging, logistics coordination, and long-term supply cooperation across international markets.
Contact Our International Team
We connect DX split unit products to real project needs — offices, retail stores, restaurants, technical rooms, modular buildings, temporary facilities, and light commercial HVAC applications — so customers get the right product for their specific room type, installation environment, and project requirements.
Explore Application Solutions
A DX split unit is used for room-level or zone-level direct expansion air conditioning in offices, retail stores, restaurants, service rooms, technical spaces, modular buildings, and light commercial projects. It provides flexible, targeted cooling for individual rooms or defined building zones without requiring a central chilled water plant or packaged rooftop system.
DX stands for direct expansion. It refers to the refrigerant-based cooling process used inside the unit, where refrigerant expands directly through the indoor evaporator coil to absorb heat and cool the supply air. This is the standard cooling technology used in split air conditioning systems worldwide.
A DX split unit consists of separate indoor and outdoor units connected by refrigerant piping, offering flexible placement of both components at different locations within and outside the building. A DX rooftop unit is typically a fully packaged system where all components are integrated into a single enclosure installed on the rooftop. Split units offer greater indoor unit placement flexibility, while rooftop units consolidate all equipment into one outdoor installation and are often preferred when indoor space saving and packaged system simplicity are the primary requirements.
Yes. SongXin HVAC supports OEM and ODM cooperation for DX split units, including private-label branding, product configuration customization, refrigerant compliance documentation, market-specific technical specifications, and long-term manufacturing supply programs for distributors and brand partners targeting commercial air conditioning and light HVAC markets.
Key information includes project type and building end-use, required cooling capacity, room floor area and ceiling height, number of rooms or zones, preferred indoor unit type, outdoor unit installation location, refrigerant piping distance, airflow and fresh air requirements, local ambient temperature, noise requirements, power supply specification, control system requirements, operating schedule, destination market, and any OEM / ODM requirements. Providing room layout and installation condition details allows SongXin HVAC to recommend the most suitable split unit configuration and indoor unit type for your project.
Whether you are sourcing split air conditioning for an office, retail store, restaurant, technical room, modular building, temporary facility, or developing a DX split unit product line through OEM / ODM cooperation — SongXin HVAC has the product capability, application expertise, and international support to help you move forward with confidence.
Send us your room details, installation conditions, and project requirements, and our team will respond with product recommendations, indoor unit configuration guidance, and a competitive quotation.