Cooled Water Chiller
Cost-Effective Installation
No machine room required, reducing initial investment
Outdoor installation eliminates the need for cooling towers, drilling, or buried pipes
High Efficiency & Energy Savings
Saves 75% electricity compared to electric heating
No combustion, emissions, or flammable risks—safer and eco-friendly
Wide Operating Range & Strong Adaptability
Stable heating at -35°C and cooling from -30°C to 48°C
Multiple models available for customized needs
Smart Control & Automated Operation
Real-time monitoring and adaptive energy adjustment
No need for dedicated personnel, reducing labor costs
Reliable Protection & Safety
Multiple safeguards with real-time fault alerts for uninterrupted operation
Cooled Water Chiller
GRAD Air-Cooled Screw Cold/Hot Water Unit – Intelligent, Efficient & Versatile
Innovative Design for Year-Round Comfort
The GRAD air-cooled screw cold/hot water unit utilizes air as a heat/cooling source and water as the refrigerant, delivering both heating and cooling in one system. Designed for year-round operation, it combines eco-friendly performance, energy efficiency, superior comfort, and stable output—making it the ideal solution for modern HVAC needs.
Cutting-Edge Core Technologies
Engineered with advanced features, GRAD’s unit stands out with:
✔ Ultra-Low Temperature Operation – Reliable heating even in extreme cold
✔ High-Efficiency Heating & Cooling – Powerful performance with minimal energy waste
✔ Intelligent Defrosting – Faster, smarter defrosting for uninterrupted operation
✔ Multi-Layer Protection – Anti-freeze, fault detection, and real-time alerts for maximum uptime
✔ Smart Control – Automated load adjustment, remote monitoring, and no need for manual oversight
Wide Applications – From Commercial to Industrial
GRAD’s versatile units are trusted in diverse settings, including:
Commercial: Hotels, shopping malls, offices, exhibition halls, airports, stadiums
Industrial: Electronics, pharmaceuticals, biotech, textiles, chemicals, metallurgy, power, and machinery
Whether you need consistent climate control for large public spaces or precision temperature management for industrial processes, GRAD delivers unmatched reliability, efficiency, and adaptability.
The GRAD Super Energy Air-cooled screw unit adopts a modular design. The entire unit system is easy to expand and can be customized according to specific industrial process conditions to achieve year-round cooling or heating, meeting the needs of different processes. It can be widely applied to the comfort central air conditioning systems of public facilities such as hotels, shopping malls, office buildings, exhibition halls, airports and stadiums, as well as the process air conditioning systems of various industries including electronics, biology, light textile, chemical engineering, metallurgy, pharmaceuticals, power and machinery, to meet different usage requirements.
Working Principle
When the air-cooled water chiller is working, the refrigerant absorbs the heat from the cooled object in the evaporator and vaporizes. The compressor continuously draws the gas generated in the evaporator and compresses it into high-temperature and high-pressure vapor. The refrigerant vapor is then sent to the condenser to exchange heat with the air. After releasing heat, it condenses into liquid. The liquid refrigerant is decompressed after passing through the expansion valve. Then it enters the evaporator to absorb the heat of the cooled object and vaporizes again. This heat exchange process is repeated until the industrial water is cooled to the required temperature.
About us
Establised in 1993, GRAD Group covers an area of 1.15 million square meters and has more than 2,000 employees, with an annual output value of nearly 4 billion yuan. GRAD Group's main business: central air conditioning chiller and terminal products, FRP water tank, FRP winding pipe, FRP storage tank, wind turbine cabin cover, environmental protection equipment, and other more than 130 varieties. GRAD Group is the pillar enterprise of the “Dezhou Central Air-Conditioning City” named by the China Refrigeration and Air-Conditioning Industry Association. It ranks the top 10 among central air-conditioning enterprises in the country, The top 3 composite material enterprises，and gets the first-class qualification for the installation of national electromechanical equipment and the second-class qualification for air purification engineering. GRAD Group can undertake central air conditioning engineering, purification engineering construction.
Why Choose GRAD?
✔ 30+ Years of HVAC Expertise
✔ Strong International Presence (100+ Countries)
✔ Advanced Manufacturing with 500,000 sqm Facility
✔ 1,000+ Patents for Innovative Solutions
✔ Commitment to Quality & Sustainability At GRAD, we strive to create comfortable, efficient, and environmentally friendly climate control systems for a better future. For more information, visit our official website or contact us directly.
