SongXin DX Rooftop Units offer powerful, space-saving HVAC performance — combining cooling, heating, and fresh air treatment directly from your rooftop, with lower energy consumption and simpler installation.
Everything you need to know at a glance
Key specifications and capabilities overview
| Category | Details |
|---|---|
| What They Do | Cool, heat, and clean air — all in one machine |
| Where They Go | On building rooftops (saves indoor space) |
| Power Range | 25 kW to 520 kW (small office to large warehouse) |
| Best For | Shopping malls, offices, factories, hospitals |
| Main Benefits | Lower costs, easy setup, saves space |
Think of DX Rooftop Units as giant air conditioners that can both cool and heat your entire building from the roof.
DX Rooftop Units are special air conditioning systems that sit on building rooftops. In fact, "DX" stands for "Direct Expansion," which means they cool air directly. Unlike other systems, they don't use chilled water pipes running through buildings.
This makes them significantly simpler to install and maintain — all major components are housed in a single compact unit on the roof, freeing up valuable indoor floor space for your business.
These systems have several important parts that work together to deliver complete climate control.
The heart that pumps refrigerant around the entire system, driving the cooling and heating cycle.
Where cold air gets made — refrigerant absorbs heat from indoor air, cooling it before distribution.
Where heat gets removed — releases absorbed heat to the outdoor air, completing the cooling cycle.
Move air in and out of the building — ensuring consistent airflow throughout every zone.
Clean the air before it enters your building — trapping dust, allergens, and particles for healthier indoor air.
Smart systems that manage everything automatically — temperature, humidity, scheduling, and diagnostics.
Comprehensive technical specifications for optimal performance
| Parameter | Fixed Speed | Inverter |
|---|---|---|
| Cooling / Heating Capacity (kW) | 25 ~ 520 | 25 ~ 520 |
| Power Input (kW) | 11 ~ 64 | |
| Air Flow (m³/h) | 5,250 ~ 27,000 | |
| Refrigerant | R410A | |
| Power Supply | 380V / 3Ph / 50Hz | |
| Compressor Type | Scroll Type (High Efficiency) | |
| Condenser Coil | Hydrophilic Aluminum Fin + Innergroove Copper Tube | |
| Evaporator Coil | Hydrophilic Aluminum Fin + Innergroove Copper Tube | |
| Noise Level dB(A) | 60 ~ 71 | |
| Unit Dimensions (mm) | 950×1380×1250 ~ 1100×2740×2375 | |
| Unit Weight (kg) | 430 ~ 1,890 | |
Tailor every aspect to your project requirements
Cooling & heating capacity can be tailored to specific project needs
R410A standard; R134a, R407C, R1234ze optional eco-friendly choices
Flexible unit dimensions and casing materials available
Return air, exhaust, middle section, filtration modules per project requirements
Discover the advantages that make our rooftop units the industry's top choice
Combines cooling, heating, air distribution, and air treatment in one unit. Eliminates the need for separate machine rooms, chilled water pumps, or cooling towers, saving installation space and reducing complexity.
International brand compressors and optimized refrigeration system deliver 25.0–520.0 kW cooling capacity and up to 90,000 m³/h airflow. Energy consumption is lower than traditional chiller + AHU systems.
Available with multiple functional sections such as fresh air, return air, exhaust, and filtration. Modular design adapts to different project requirements. Adjustable capacity control ensures precise temperature & humidity regulation.
Equipped with scroll or semi-hermetic screw compressors for long-term stable operation. Multi-protection system (overload, high/low pressure, phase loss, etc.) guarantees safe operation in various environments.
Delivered as a single rooftop unit. Requires only duct and power connection. Compact footprint reduces building structural load. Simplified layout for convenient inspection, cleaning, and servicing.
Integrated microcomputer/PLC control with LCD or touchscreen interface. Real-time operation data, fault alarms, and remote monitoring functions. Compatible with BMS for centralized management.
Choose the right model for your specific application needs
| Feature | Fixed Speed Model | Inverter Model |
|---|---|---|
| Cooling Capacity Range | 35 ~ 180 kW (Step control) |
35 ~ 180 kW (Continuous modulation) |
| Energy Efficiency | High efficiency, but lower at partial load | Superior efficiency at partial load Best Choice |
| Capacity Control | On/Off step control | 0–100% stepless capacity adjustment Precise Control |
| Operating Cost | Lower initial investment, quick ROI Budget Friendly |
Lower long-term energy cost, higher savings |
| Temperature Stability | Larger temperature fluctuations | Stable temperature, better comfort Superior Comfort |
| Noise Level | Higher noise during frequent start/stop | Quieter operation with variable speed Ultra Quiet |
| Best Applications | Large halls, warehouses, stable load sites | Shopping malls, stadiums, airports, high-end projects with fluctuating loads |
Need help choosing? Contact SongXin experts for a free consultation — we'll recommend the perfect model based on your building size, load profile, and budget requirements.
Versatile solutions for diverse commercial and industrial environments
70 – 200 kW
150 – 350 kW
100 – 250 kW
70 – 150 kW
120 – 220 kW
200 – 500 kW
Explore the innovative functional sections that deliver superior performance and flexibility
Introduces outdoor air to improve indoor air quality. Optional filters (G3, F5, HEPA) and energy recovery can be added to reduce energy loss.
Multi-stage filtration (primary, medium, high-efficiency) to remove dust and contaminants. Easy slide-in/slide-out structure for quick maintenance.
Equipped with DX cooling coils (R410A standard, optional eco-refrigerants). Heating available via electric heater, hot water coil, or steam coil.
Provides humidity control using electrode humidifier, steam humidifier, or spray system. Suitable for electronics, pharma, and labs.
Plate heat exchanger or rotary wheel to recycle sensible/latent heat, improving energy efficiency in high fresh-air applications.
High-efficiency centrifugal or plug fans with frequency conversion (VFD). Low-noise, vibration-isolated design ensures stable operation.
Fresh air and return air blending with motorized dampers. Ensures precise air volume management and stable indoor environment.
Integrated PLC or microcomputer control. Real-time monitoring of temperature, humidity, and system status. Optional touchscreen interface and BMS connectivity.
