Beyond the Boiler: Real-World Applications of Air-Source Heat Pumps in China"s Green Transition

The hospitality industry is an energy-intensive sector, requiring simultaneous heating, cooling, and a constant supply of hot water. Jinan Huaneng Hotel in Shandong Province, a high-end business hotel offering accommodation, dining, and conference services, found itself grappling with escalating energy costs. Originally, the hotel’s 23,000-square-meter space relied on expensive municipal high-temperature heating, which cost a staggering 36 RMB per square meter and failed to provide consistent indoor temperatures.

In response, the hotel partnered with the heat pump manufacturer, Micoe, to implement a comprehensive overhaul. The solution involved installing 16 units of Micoe"s 50HP ultra-low-temperature ASHP units for space conditioning, alongside 4 units of 13HP dedicated hot water units to serve over 300 guest rooms. A key component of this upgrade was the integration of the CAS (Clean Energy Coupling Smart Control System), an intelligent operating platform that automatically adjusts the number of operating units and water temperatures based on real-time demand and outdoor conditions.

The results were transformative. The new system reduced heating costs to just 16 RMB per square meter—a 55% saving compared to the municipal system. The hotel management reported significantly improved comfort levels, a testament to the ability of modern heat pumps to provide stable, year-round climate control while drastically lowering operational expenses.

In northern China, where centralized heating is a necessity, the transition from coal-fired boilers to clean energy is reshaping communities. A striking example is the Jinqiu Haoyuan residential community in Liaocheng, Shandong. This development, with a total construction area of 50,000 square meters, features a unique sight: 342 Nuentang W5 ASHP units neatly installed on the exterior walls of eight residential buildings, forming what has been dubbed the "Internet-famous heating wall".

This project represents one of the region"s first large-scale adoptions of a centralized, split-type ASHP system for individual households. Each unit is designed to tackle the harsh northern winter, utilizing vapor injection technology to maintain stable heating performance even in extreme lows of -35°C. The units feature adaptive intelligent defrosting, which improves thermal efficiency by over 20%, and meet the national Grade 1 energy efficiency standard.

For residents, the financial impact is as compelling as the technological prowess. Compared to traditional urban heating fees, these heat pumps cut heating costs by more than 50%, potentially saving a typical 100-square-meter household between 1,500 and 2,000 RMB annually. This case highlights how ASHP technology can be scaled to the community level, providing a decentralized, efficient, and economically viable alternative to sprawling district heating networks.

Perhaps one of the most demanding tests for any heating system is the extreme cold of Northeast China. In Hegang City, Heilongjiang, where winter temperatures routinely plummet to -30°C, the Biyoute Logistics Park faced a significant challenge. This 40,000-square-meter facility, a critical hub for(cold chain) logistics and distribution, lacked access to municipal heating and was prohibited from using direct electric heating due to high carbon emissions.

The solution, implemented by Micoe, was a hybrid "Heat Pump + Electric Boiler" system managed by the CAS intelligent control platform. The park installed 45 ultra-low-temperature ASHP units, supplemented by two 400kW electric boilers for peak demand. The CAS platform is the "brain" of the operation, intelligently balancing the load between the heat pumps and boilers based on real-time weather data and the specific temperature requirements of different storage zones.

Despite the brutal climate, the system has proven both reliable and economical. Based on operational data, the heating cost for the season was approximately 49 RMB per square meter. While this is higher than some residential solutions, it represents a saving of up to 38% compared to the estimated cost of municipal heating (60-80 RMB/m²) in such a remote area. This project demonstrates that with intelligent controls and robust hardware, ASHPs can decarbonize even the most challenging industrial environments.

Beyond space heating, the production of domestic hot water is a massive energy consumer. A factory in Jiangmen, Guangdong, owned by a laser intelligent equipment company, needed to provide a reliable hot water supply for its 3,500 workers. The goal was to move away from inefficient systems and ensure ample hot water for showers, particularly during peak evening hours.

The chosen solution was a bank of eight 20HP Pristar ASHP water heater units. These units function like powerful "thermal engines," drawing heat from the ambient air to raise the temperature of 160 tons of water stored in the system"s tanks. Unlike traditional electric water heaters that generate heat directly, heat pumps merely move existing heat, resulting in dramatic energy savings.

The project has been a resounding success, providing 24/7 constant-temperature hot water and eliminating the anxiety of "running out" of hot water. From an economic perspective, the system uses approximately 70% less energy than conventional electric heating equipment. This case illustrates the immense potential of ASHPs in the industrial sector, where the demand for large volumes of hot water is constant and the potential for savings is substantial.

The Chinese government"s "Coal-to-Electricity" policy has been a major driver of ASHP adoption in rural areas. In the villages of Jiuquan, Gansu Province, located in the country"s northwest where winter temperatures can drop to -26°C, residents traditionally relied on coal stoves and heated brick beds ("kang"). This method was not only labor-intensive and a fire hazard but also a significant source of air pollution.

Between 2021 and 2024, approximately 3,000 sets of Zhongguang Outeks (OUTES) ASHP units were installed in local farmhouses as part of a rural renewal project. The "Gemini Pro" series units, connected to underfloor heating systems, have fundamentally changed rural life. Residents no longer need to wake up in the middle of the night to add coal to the stove; they simply wake up to a warm, clean, and safe home.

The project"s success was bolstered by a collaborative effort where the manufacturer assisted local authorities in securing 5,000 RMB subsidies per household from the central government"s air pollution prevention fund. This financial support, combined with the technology"s obvious benefits—comfort, convenience, and cleanliness—has made the clean energy transition a tangible reality for rural populations.

In many expanding Chinese cities, new developments often find themselves stranded in "heating dead zones" without access to the municipal grid. The Gaocun (East) residential complex in Zhengzhou, Henan, was one such case. Covering 265,000 square meters with nine residential towers, a community center, and a clinic, the complex had been without heating for years after its completion. An initial gas boiler system proved too expensive and unstable, leading to fluctuating indoor temperatures and high operational costs.

To solve this, the PowerChina Geothermal Company implemented a custom "air-source heat pump" alternative. By acting as the investor, builder, and operator, they delivered a turnkey solution that eliminated the need for individual resident investment. The new system uses air as its primary energy source, ensuring stable, 24-hour heating.

The project has been a major success, resolving a long-standing "livelihood pain point." During an inspection, local vice mayor Xiong Feng personally visited residents" homes to verify the temperature. The feedback was overwhelmingly positive, with residents praising the warmth and the reliability of the service. The project is now being held up as a model for how public-private partnerships and clean energy technology can solve complex urban infrastructure challenges.

The adaptability of ASHP technology extends to an even wider array of specialized applications. The EK Air Conditioning company, for example, has documented numerous successful projects that showcase this versatility:

• Educational Facilities: In Turpan, Xinjiang, 55 EK ultra-low-temperature variable-frequency units provide 100,000 square meters of heating for a primary and secondary school, with the technology ensuring stable operation in the region"s dramatic temperature swings from -38°C to 50°C.

• Exhibition Halls: A museum in Taiyuan, Shanxi, replaced old, inefficient screw(screw units) with 11 EK (variable-frequency) ASHPs. The new system provides (24/7) heating, a significant upgrade from the previous system which could only heat during the day, while also operating more quietly.

• Retail Complexes: A shopping center in Tianjin with strict space and noise constraints utilized 13 large ultra-low-temperature units. Their high efficiency (annual comprehensive energy efficiency exceeding 3.8) and compact, modular design reduced energy consumption by 30% compared to traditional systems while fitting into a limited installation area.

The future of air-source heat pumps lies not just in the hardware, but in intelligent software integration. This trend was on full display at the 2026 China Heat Pump Expo in Shijiazhuang. Major manufacturers are pivoting towards "full-scenario" solutions that integrate AI for optimized performance.

Haier, for instance, showcased its "Full-Scene AI Smart Control" solution. In a practical application at an eel farm in Fujian, this AI system autonomously regulates water temperature based on ambient conditions, dramatically cutting energy use while improving (aquaculture survival rates). In a Xinjiang district heating project, Haier"s system uses load forecasting to dispatch heat precisely, reportedly saving approximately 85,000 tons of carbon by 2025.

Similarly, Midea unveiled its "True Warm MAX" central air conditioner, targeting the pain point of high energy bills. By integrating dual enthalpy (injection) technology with "Smart PV Direct Drive" capabilities, the system allows a home to use solar power directly to run the heat pump during the day, achieving what the company calls "cost-free energy use" and making high-end comfort more affordable.

The case studies presented here—from the renovated hotel in Jinan and the warm farmhouses in Gansu to the high-tech (logistics park) in Hegang and the newly heated community in Zhengzhou—tell a compelling story. Air-source heat pumps have matured into a robust, versatile, and economically sound technology.

They are no longer a niche alternative but a mainstream solution capable of addressing China"s diverse climatic and operational challenges. By slashing operational costs, improving quality of life, and dramatically reducing carbon footprints, ASHPs are proving to be a cornerstone technology in China"s journey toward a green and sustainable future. As intelligent controls and hybrid systems become the norm, the question for builders and planners is shifting from "if" to "which" heat pump solution will best serve their needs.