Screw Type Air-Cooled Chiller & Heat Pump Unit – FAQ

Aurashu screw type air-cooled chiller & heat pump units are highly customizable to meet the specific technical, environmental, and operational requirements of different projects. Customization is one of Aurashu’s core strengths, enabling the unit to perfectly adapt to diverse industries, climates, and application scenarios.1. Cooling and Heating Capacity CustomizationAurashu can tailor the cooling and heating capacity based on project load calculations, building size, usage patterns, and future expansion plans. Units can be designed for partial-load dominance, peak-load operation, or staged capacity growth, ensuring optimal efficiency throughout the lifecycle.2. Compressor ConfigurationCustomers may choose between fixed-speed or inverter-driven screw compressors, single or multiple compressor arrangements, and optimized capacity control strategies. This allows precise matching of performance, energy efficiency targets, and budget requirements.3. Operating Temperature RangeUnits can be customized for extreme climates, including high-ambient cooling (up to 50°C or above) or low-ambient heating operation. Special designs such as enhanced condenser coils, low-temperature refrigerant control logic, and auxiliary heating components ensure stable performance in harsh environments.4. Refrigerant SelectionAurashu supports multiple refrigerant options, including R134a, R407C, R410A, and environmentally friendly low-GWP alternatives, in compliance with local regulations and sustainability goals.5. Electrical and Power ConfigurationVoltage, frequency, and electrical standards can be customized to suit different countries and regions. Options include soft starters, inverter power modules, and enhanced electrical protection for unstable power conditions.6. Control System and CommunicationThe unit’s control platform can be customized with advanced PLC or microprocessor controllers, multilingual interfaces, and integration with BMS systems via Modbus, BACnet, or other protocols. Control logic can also be adapted to specific operational strategies.7. Structural and Installation DesignAurashu offers flexible structural designs, including compact footprints, modular layouts, noise-reduction enclosures, and corrosion-resistant casings for coastal or industrial environments.8. Noise and Vibration ControlCustomized low-noise fan selections, acoustic enclosures, vibration isolators, and airflow optimization measures are available to meet strict noise regulations in residential, hospital, or commercial zones.9. Special Application FeaturesFor data centers, process cooling, industrial production, or district energy systems, Aurashu can integrate redundant systems, heat recovery modules, free cooling options, or enhanced reliability components.Through its engineering-driven customization approach, Aurashu ensures each unit is not just a product, but a project-specific solution that delivers reliability, efficiency, and long-term value.

Yes. Aurashu Screw Type Air-Cooled Chiller & Heat Pump Units fully support inverter (variable frequency) and variable capacity control, providing high energy efficiency, precise load matching, and stable operation across a wide range of working conditions.Aurashu integrates advanced inverter technology into its air-cooled screw chiller and heat pump systems by combining high-efficiency screw compressors, intelligent variable frequency drives (VFD), and a smart control platform. This enables the unit to continuously adjust compressor speed and cooling or heating output based on real-time load demand, ambient temperature, and system operating conditions.Unlike conventional fixed-speed chillers that operate in simple ON/OFF cycles, Aurashu inverter-driven units modulate capacity smoothly. The compressor speed can vary across a wide range—typically from low-load operation (30% or below) up to full capacity—allowing the system to precisely match the building’s actual cooling or heating demand. This avoids frequent starts and stops, significantly reducing power consumption and mechanical wear.Variable capacity control is further enhanced through multi-step capacity regulation and intelligent logic control. When multiple compressors or circuits are used, the system automatically stages capacity by combining inverter modulation with optimized compressor sequencing. This ensures stable supply water temperature, minimal fluctuation, and high comfort levels, even under rapidly changing load conditions.From an energy-efficiency perspective, inverter control greatly improves part-load performance. Since most HVAC systems operate under partial load conditions for the majority of the year, Aurashu units achieve notably higher IPLV and seasonal energy efficiency ratios. By lowering compressor speed during low-load operation, electrical consumption drops dramatically, often delivering energy savings of 20–40% compared to fixed-speed units, depending on the application.Aurashu’s variable capacity control also enhances system reliability and lifespan. Soft start and smooth speed regulation reduce inrush current, mechanical stress, and thermal shock to the compressor and electrical components. This results in lower failure rates, longer service intervals, and reduced long-term maintenance costs—key advantages for commercial, industrial, and mission-critical applications.In heating (heat pump) mode, inverter technology plays an equally important role. The system can automatically adjust heating output in response to outdoor temperature changes, ensuring stable heating performance in both mild and cold climates. For low-ambient conditions, Aurashu applies optimized inverter control strategies to maintain heating capacity, improve defrost efficiency, and reduce energy loss during winter operation.The inverter and variable capacity functions are fully integrated into Aurashu’s intelligent control system. The controller continuously monitors parameters such as load demand, water temperature, ambient temperature, compressor status, and system pressure. It then dynamically adjusts operating frequency, capacity output, and system logic to achieve optimal efficiency and reliability. The system also supports building management system (BMS) integration via standard communication protocols, enabling centralized monitoring and energy management.In summary, Aurashu Screw Type Air-Cooled Chiller & Heat Pump Units not only support inverter and variable capacity control, but are specifically engineered to maximize the benefits of this technology. This makes them an ideal solution for projects that require high energy efficiency, flexible operation, precise temperature control, and long-term operational stability.

No, a Screw Type Air-Cooled Chiller & Heat Pump Unit does not require a cooling tower or boiler to operate. This is one of its most significant advantages compared with traditional water-cooled chiller systems.Aurashu screw type air-cooled chiller & heat pump units adopt an air-cooled heat exchange design, where heat is rejected directly to the ambient air through high-efficiency condenser coils and axial fans. During cooling operation, the system absorbs heat from chilled water and releases it into the outdoor air, completely eliminating the need for a cooling tower, cooling water pumps, make-up water systems, or complex water treatment equipment.When operating in heating (heat pump) mode, the unit extracts thermal energy from outdoor air and transfers it to the heating water system. This process replaces the function of a traditional boiler, meaning no gas, oil, or electric boiler is required. Aurashu heat pump configurations are optimized with enhanced vapor injection, intelligent defrost control, and wide ambient temperature adaptability, enabling stable heating performance even in low outdoor temperatures.By removing cooling towers and boilers, the system offers multiple benefits:Lower initial investmentThere is no need to purchase or install cooling towers, boilers, water tanks, or related auxiliary equipment, significantly reducing system capital cost.Simplified installation and space savingsThe unit is typically installed on rooftops or outdoor ground areas. This is especially advantageous for projects with limited plant room space, renovation projects, or buildings where cooling towers are restricted by planning regulations.Reduced maintenance and operating costsCooling towers often require frequent cleaning, water treatment, and corrosion prevention. Boilers require fuel supply, safety inspections, and emissions management. Aurashu air-cooled systems avoid these issues, resulting in simpler maintenance and lower lifecycle costs.Water-saving and environmentally friendlySince no cooling water is consumed, the system is ideal for water-scarce regions and projects aiming for green building certifications.High system reliabilityFewer auxiliary components mean fewer failure points. Aurashu units integrate intelligent control systems that monitor compressor operation, airflow, refrigerant status, and safety protections in real time.Aurashu designs these units with modular or custom configurations, allowing them to serve a wide range of applications such as commercial buildings, industrial facilities, hospitals, data centers, hotels, and large residential complexes. The air-cooled design also ensures compliance with regions where water-cooled systems are restricted or impractical.In summary, Aurashu screw type air-cooled chiller & heat pump units operate as standalone cooling and heating solutions, requiring neither a cooling tower nor a boiler, while delivering reliable, energy-efficient, and environmentally responsible performance.

Yes. Aurashu specializes in designing and manufacturing custom screw type air-cooled chiller & heat pump units engineered for extreme climate conditions.With extensive experience in global projects across hot deserts, cold regions, coastal zones, and high-altitude areas, Aurashu provides climate-adaptive HVAC solutions that ensure long-term stability, efficiency, and reliability.1. Wide Operating Temperature AdaptabilityAurashu units can be customized to operate reliably under:High ambient temperatures up to +55°C, suitable for Middle East deserts, Africa, and tropical regionsLow ambient temperatures down to –30°C or lower, ideal for Northern Europe, Central Asia, and cold continental climatesLarge day–night temperature fluctuations, maintaining stable water supply temperatureThis is achieved through reinforced refrigeration circuits, optimized condenser design, intelligent defrost logic, and climate-specific control strategies.2. Enhanced Heat Pump Performance in Cold RegionsFor cold and ultra-cold climates, Aurashu integrates:Low-temperature scroll or screw compressorsEnhanced vapor injection (EVI) or optimized economizer systemsIntelligent defrosting and anti-frost coil designBackup electric or hybrid heating options when requiredThese features ensure stable heating output, high COP, and continuous operation even in sub-zero conditions.3. High-Temperature & Desert Environment OptimizationIn high-heat and dusty environments, units are equipped with:Oversized condensers with increased heat exchange areaHigh-efficiency axial fans with desert-rated motorsSand-proof coil protection and optional anti-fouling coatingsHigh-pressure refrigerant design to maintain cooling capacity at peak ambient temperaturesThis ensures no derating or system shutdown during heat waves.4. Corrosion & Coastal Climate ProtectionFor coastal, island, and chemical-exposed environments, Aurashu offers:Epoxy-coated or hydrophilic aluminum finsStainless steel fasteners and anti-corrosion framesSalt-spray-tested electrical componentsIP-rated control cabinetsThese measures significantly extend service life and reduce maintenance costs.5. Smart Control for Extreme Climate StabilityAurashu units integrate intelligent control systems that:Automatically adjust compressor capacity and fan speedOptimize part-load operation under fluctuating weather conditionsProvide fault diagnostics, alarms, and remote monitoringSupport BAS/BMS integration (BACnet, Modbus, etc.)This ensures stable indoor comfort and equipment protection even in unpredictable climates.6. Proven Global Engineering ExperienceAurashu has successfully delivered HVAC solutions for:Power plants and energy infrastructure in Central AsiaIndustrial facilities in hot desert regionsGovernment and commercial buildings in cold and coastal climatesBelt & Road projects with harsh environmental requirementsEach project benefits from site-specific design, simulation analysis, and factory testing.7. Custom Engineering & TestingBefore delivery, extreme-climate units can undergo:High-temperature and low-temperature simulation testingLoad performance verificationElectrical and safety inspectionsFactory acceptance testing (FAT) tailored to project requirementsAurashu does not offer “one-size-fits-all” solutions. Instead, every screw type air-cooled chiller & heat pump unit can be professionally engineered for extreme climates, ensuring reliable performance, energy efficiency, and long service life—no matter where the project is located.

Aurashu’s Custom Screw Type Air-Cooled Chiller & Heat Pump Unit is designed for a wide range of commercial, industrial, and special-purpose applications where high capacity, stable performance, and flexible cooling/heating solutions are required. By combining high-efficiency screw compressors with air-cooled heat rejection and customizable system configurations, this unit delivers reliable year-round operation across diverse environments.Commercial BuildingsThe unit is widely used in office buildings, shopping malls, hotels, convention centers, and mixed-use developments. These facilities typically require stable chilled water for centralized air-conditioning systems, along with optional heating during transitional or winter seasons. Aurashu’s screw-type air-cooled units provide large-capacity output, excellent part-load efficiency, and low operating noise, ensuring indoor comfort while controlling energy costs. The heat pump configuration allows one system to handle both cooling and heating demands, simplifying plant room design.Industrial FacilitiesIn factories, manufacturing plants, data centers, electronics workshops, and logistics warehouses, stable temperature control is critical for equipment operation and production quality. Aurashu customizes the unit to support continuous operation, high ambient temperatures, dusty environments, or fluctuating loads. The screw compressor’s durability and long service life make it ideal for 24/7 industrial applications. In addition to comfort cooling, the system can support process cooling for machinery, production lines, and industrial processes.Public & Infrastructure ProjectsAurashu units are well suited for airports, railway stations, hospitals, schools, government buildings, and large public facilities, where reliability, redundancy, and compliance with strict standards are essential. Optional N+1 redundancy, intelligent control systems, and integration with BMS/SCADA platforms ensure stable operation and easy centralized management. For hospitals and laboratories, the system can be paired with air handling units to meet higher indoor air quality and temperature stability requirements.District & Centralized Cooling SystemsFor district cooling, campus-style developments, and industrial parks, Aurashu screw-type air-cooled chillers provide scalable cooling and heating capacity without the need for cooling towers or complex water treatment systems. This makes them especially suitable for regions with limited water resources or strict environmental regulations.Special Climate & Export ProjectsAurashu designs custom configurations for high-temperature regions, cold climates, coastal or corrosive environments, making the unit ideal for overseas projects along the Belt and Road Initiative. Enhanced condenser protection, low-ambient heating capability, and climate-adapted control logic ensure reliable performance under extreme conditions.Why Choose AurashuAurashu does not offer a one-size-fits-all solution. Each unit can be customized in terms of capacity range, operating temperature, noise control, control interface, refrigerant options, and installation layout. Combined with Aurashu’s global technical support, commissioning services, and after-sales system, customers receive a complete, application-oriented HVAC solution rather than just equipment.

Screw Type Air-Cooled Chiller & Heat Pump Unit is a highly engineered HVAC solution designed to meet specific project requirements where standard models cannot fully satisfy performance, installation, or operational needs. Unlike conventional air-cooled chillers, Aurashu’s custom screw units are tailored in terms of cooling and heating capacity, system configuration, climate adaptability, energy efficiency targets, control logic, and application scenarios, ensuring optimal performance throughout the entire lifecycle.At the core of this system is a high-efficiency screw compressor, known for its stable operation, wide load range, and excellent part-load efficiency. Compared with scroll compressors, screw compressors are especially suitable for medium to large capacity applications, continuous operation, and projects requiring high reliability.Aurashu’s custom air-cooled screw chiller & heat pump units integrate both cooling and heating functions into one system. In cooling mode, the unit efficiently removes heat from chilled water and dissipates it to the ambient air through high-performance condensers and axial fans. In heating (heat pump) mode, the refrigeration cycle is reversed, extracting heat from outdoor air—even under low ambient temperatures—and transferring it to the water side for space heating or process heating. With enhanced vapor injection (EVI), low-ambient operation kits, and intelligent defrost strategies, Aurashu units can operate reliably in cold regions where winter temperatures drop significantly.Based on detailed project analysis, the unit can be customized in the following aspects:Capacity range and configuration: Single or multiple screw compressors, dual refrigeration circuits, staged or stepless capacity control to match actual load demand.Climate adaptability: High ambient design for hot regions, low ambient heat pump design for cold climates, anti-corrosion treatment for coastal or industrial environments.Energy efficiency: Optimized heat exchangers, variable-speed fans, intelligent part-load control, and compliance with local and international efficiency standards.Noise and vibration control: Low-noise fan options, acoustic enclosures, vibration isolators, suitable for urban, hospital, hotel, or residential-adjacent installations.Control and integration: PLC or microprocessor controllers, BMS/BAS communication via Modbus, BACnet, or LonWorks, remote monitoring and fault diagnosis.Installation flexibility: Rooftop, ground-mounted, or modular layout options adapted to limited space or complex site conditions.Aurashu’s custom screw type air-cooled chiller & heat pump units are widely used in commercial buildings, industrial plants, data centers, hospitals, hotels, airports, shopping malls, district cooling/heating systems, and special process cooling or heating applications. Each unit is engineered to balance performance, efficiency, reliability, and total cost of ownership.From design consultation and selection to manufacturing, testing, delivery, installation guidance, and after-sales support, Aurashu provides a full-lifecycle solution. Every custom unit undergoes strict factory testing to ensure stable operation, safety, and performance compliance before delivery. This makes Aurashu’s custom screw air-cooled chiller & heat pump units a dependable choice for demanding and non-standard HVAC projects worldwide.