Air Cooled Liquid Chiller
1.It can operate stably in an ultra-low temperature environment of -35℃
2. Precise frost measurement, rapid defrosting, reduced defrosting frequency, and shortened defrosting time
3. Mobile APP operation, fault warning, and online diagnosis
4. It operates efficiently within an ultra-wide ambient temperature range of -35℃ to 43℃
5. COPh > 2.6 exceeds the national standard energy efficiency limit value, and IPLV(H) exceeds the national standard first-level energy efficiency
The GRAD air source heat pump unit is integrated with a self-developed NB-IoT remote intelligent control module, enabling convenient operation via a mobile app without the need for dedicated on-site personnel. This advanced system offers predictive fault warnings, real-time alerts, and online diagnostics for seamless maintenance.
Designed for high-efficiency performance, the unit operates reliably in extreme ambient temperatures ranging from -30°C to 43°C, delivering hot water at temperatures up to 60°C. Its versatile compatibility supports multiple terminal options, including radiators, underfloor heating, and central air conditioning systems for both heating and cooling.
Featuring nationally patented intelligent defrosting technology, the unit ensures precise frost detection, rapid defrosting cycles, and a significant reduction in both defrosting frequency and duration. Additional standout advantages include:
Modular customization for flexible configuration
Space-saving design with no dedicated machine room required
Eco-friendly and energy-efficient operation
High performance with low noise
Broad applicability across diverse scenarios
Combining innovation with practicality, the GRAD heat pump unit delivers intelligent, energy-saving comfort for modern heating and cooling needs.
● Large diameter heat exchanger, low temperature operation effectively reduce refrigerant flow resistance, increase evaporation pressure, inhibit frost;
● Large distance aluminum foil design, low temperature operation effectively reduce air flow resistance, increase evaporation pressure, inhibit frost;
● Fin flow independent control, accurate control, more thorough defrosting;
● Concentrated a variety of innovative technologies, distributed defrosting system and piston type four-way directional valve effectively avoid the suction of traditional air-cooled heat pump units With liquid, defrosting incomplete, four way directional valve stuck and so on.
Product advantage
1.Free of machine room, less initial investment.
Installed outdoors, no need to build a separate room, no need cooling towers, no need to drill Wells or bury pipes, thus reducing the initial investment of the user.
2. High efficiency, energy saving, environmental protection and safety
Air-cooled screw cold (hot) water unit compared with electric heating can save electricity 75%. Compared with traditional boiler equipment, no combustion,Burning, no exhaust emissions, no flammable and explosive safety hazards.
3. Wide range of operation, strong applicability
According to different needs, a variety of models are available, it can be stable heating operation at -35 ° C ambient temperature, at -30 ° C ~ 48 ° C Stable cooling operation at ambient temperature
4. Intelligent control, no need for special duty
Intelligent control system monitors the operation status of the unit in real time, and automatically adjusts the energy of the unit according to the actual load demand, without the need for special duty, saving labor cost.
5. Multiple protection functions to ensure reliable operation of the unit
With multiple protection function, when failure, real-time automatic alarm
Parameter table
For more information about air-cooled chiller products, please contact us
About us
Manufacturer:Shandong GRAD Group Co.,Ltd.
Established Time:1993
Covers an area of:700,000sqm
Main products:Central air conditioners,ventilators ,GRP Composite material products,Environment protection products
Employment : 2500+ employees
Registered capital: ￥ 100 million
Equipment price : ￥370 million
Total capital :￥ 925 million
Annual output value: ￥over 3 billion
Design team:300+
Overseas offices:
1. Thailand and Cambodia offices
2. USA branch company
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.
