In the development of clean energy heating across Northwest China, the Shijihuaihai Residential Community in Jingning County, Pingliang, Gansu Province, has become a benchmark project for high-end residential heating. Covering approximately 60,000 m², the project was delivered by AIROSD and uses advanced Air source heat pumps as the core heating solution.
Located in a region characterized by long, cold winters, Jingning can experience outdoor temperatures as low as -20°C. Under such demanding conditions, traditional coal-fired heating systems can result in high energy consumption, emissions, and unstable indoor comfort. For a high-end residential community, residents expect much more than basic heating—they require a system that is reliable, quiet, efficient, and comfortable throughout the winter.
To meet these requirements, AIROSD's technical team conducted detailed on-site surveys, building load calculations, and system evaluations before developing the final solution. The project adopted ultra-low temperature heating heat pumps as the primary heat source, with multiple units operating in parallel. This configuration enables flexible capacity adjustment, zoned control, and intelligent operation according to actual heating demand.
Reliable Heating in Extreme Cold
One of the key advantages of Air source heat pumps is their ability to extract usable heat from outdoor air and convert it into heating energy with high efficiency. However, low ambient temperatures create additional challenges for conventional heat pump systems.
This is where ultra-low temperature heating heat pumps provide a significant advantage. Designed for demanding winter conditions, these systems maintain stable heating performance even when outdoor temperatures fall well below freezing. For the Shijihuaihai project, this capability is particularly important because the system must provide continuous heating during the coldest periods of the year.
The use of ultra-low temperature heating heat pumps also allows the system to respond flexibly to changing outdoor conditions and building loads. Instead of operating at full capacity at all times, multiple units can be staged according to demand, helping improve seasonal efficiency and reduce unnecessary energy consumption.
EVI Technology for Stable Low-Temperature Performance
Another important technology used in this type of application is EVI heat pump technology. EVI, or Enhanced Vapor Injection, introduces intermediate vapor injection into the compression cycle. This helps increase heating capacity and improve compressor operating conditions at low ambient temperatures.
For Northwest China's cold climate, EVI heat pump technology is particularly valuable. As outdoor temperatures decrease, conventional systems can experience a significant reduction in heating capacity. With EVI, the heat pump can maintain stronger heating output and more stable operation under low-temperature conditions.
In the Shijihuaihai project, EVI heat pump technology supports reliable heating during extreme winter weather while helping reduce performance losses at low temperatures. This means residents can enjoy a more stable indoor environment without the common problem of insufficient heating during severe cold spells.
The benefits of EVI heat pump technology are not limited to peak winter conditions. By combining intelligent control with variable-capacity operation, the system can also adapt to partial-load conditions, improving overall operating efficiency throughout the heating season.
One Integrated System for Heating and Cooling
The project also demonstrates the flexibility of heating and cooling heat pump systems. Instead of installing completely separate equipment for different seasons, an integrated heat pump solution can provide heating in winter and cooling in summer.
For high-end residential communities, this approach offers several advantages. Heating and cooling heat pump systems can reduce equipment duplication, simplify system management, and improve the overall value of the building's mechanical infrastructure.
In winter, the system provides stable heating. During warmer months, the same equipment can provide cooling, creating a year-round indoor comfort solution. This makes heating and cooling heat pump systems an attractive choice for modern residential developments that require both energy efficiency and flexible operation.
Commercial-Grade Heat Pump Technology
Although the project serves a residential community, the scale and operating requirements demand professional commercial-grade equipment. AIROSD therefore applies the advantages of commercial heating and cooling heat pumps to large-scale building applications.
Compared with conventional coal-fired boilers, commercial heating and cooling heat pumps do not require on-site fuel combustion or regular fuel transportation and storage. Their electric-driven operation also eliminates direct combustion emissions at the point of use.
Combined with intelligent group control, commercial heating and cooling heat pumps can adjust operation according to actual building demand. Multiple units can start, stop, or modulate automatically, helping avoid excessive energy consumption during periods of low demand.
For large residential projects, this type of centralized system provides a balance between comfort, operational efficiency, safety, and environmental performance. It also supports the transition from traditional fossil-fuel heating toward cleaner and more efficient energy solutions.
A Practical Model for Clean Heating in Northwest China
The Shijihuaihai project demonstrates how Air source heat pumps, ultra-low temperature heating heat pumps, and commercial heating and cooling heat pumps can be integrated with advanced control technologies to address the challenges of cold-climate heating.
At the heart of the solution, EVI heat pump technology improves low-temperature performance, while heating and cooling heat pump systems provide year-round flexibility. Together, these technologies create a comprehensive solution for high-end residential communities in demanding climates.
More importantly, the project demonstrates that clean energy heating can deliver both environmental benefits and a high level of residential comfort. For communities in Northwest China, where winters are long and cold, reliable heat pump technology can provide an alternative to traditional coal-based heating while supporting the development of greener buildings.
AIROSD heating and cooling heat pump systems continues to develop advanced heat pump solutions for residential, commercial, and industrial applications. With experience in cold-climate projects and a focus on high-efficiency technology, AIROSD is committed to delivering reliable Air source heat pumps, ultra-low temperature heating heat pumps, and commercial heating and cooling heat pumps for challenging environments.
The Shijihuaihai Residential Community project is more than a heating project. It is a practical demonstration of how EVI heat pump technology and modern heating and cooling heat pump systems can contribute to comfortable, efficient, and cleaner living in Northwest China.