Closed Pressure Air Source Heat Pump Unit
Description:The air-source heat pump module of YIJIAREN water heating unit under pressure and consists mainly of three parts: the main unit and system accessories (integrated), a heating water tank, and a thermal storage tank. The system utilizes a compressor to transfer heat from the air to the water, maintaining a continuous cycle of the refrigerant. The heat pump consistently absorbs heat, efficiently transferring it to the closed water tank via a condenser. Through internal water circulation, each pressure module's water tank is filled with hot water.

Product Description   
  The air-source heat pump module of YIJIAREN water heating unit under pressure and consists mainly of three parts: the main unit and system accessories (integrated), a heating water tank, and a thermal storage tank. The system utilizes a compressor to transfer heat from the air to the water, maintaining a continuous cycle of the refrigerant. The heat pump consistently absorbs heat, efficiently transferring it to the closed water tank via a condenser. Through internal water circulation, each pressure module's water tank is filled with hot water.  

Power Supply Specification                  V/N/Hz380/3/50380/3/50380/3/50
Rated Heating Capacity                              kw17.51836
Input Power                                                  kw4.64.59.3
Water Tank Temperature Range               ºC35~6535~6535-65
Operating Environment Temperature      ºC-10~48-10~48-10~48
Operating Noise Level                              dB(A)606060
Water System Pressure Range                 Mpa1.11.11.1
Net Weight of the Unit                                kg140135260
Rated Water Production                             L/h455420820

Water Tank ModelHeating Tank A12/18/24/36/45Heat Storage Tank 120B
Electric Heating Power                               kwA12/18/24/36/45/
Rated Working Pressure                           Mpa1.11.1
Water Inlet and Outlet Diameter                /DN40DN40
Drain Valve Diameter                                    /DN20DN20 
Safety Valve Diameter                                  /DN20/
Water Tank Volume                                       L455455
Net Weight                                                    kg162127

  Working Principle
Product configuration
  1. Direct-Heating Pressurized Heat Pump Technology, Fast Heat Exchange  

Pressurized heat pump units use the principle of Carnot cycle, achieving large temperature difference heat exchange, fully utilizing the abundant heat in the air, providing heat several times the electrical energy consumed, saving about 30% more than traditional heat pump system designs.  

  2. Modular Pressurized System, Significantly Lowering System Loss  

Compared to conventional open heat pump systems, a modular pressurized heat pump system greatly reduces system loss such as heat loss from water tanks and power consumption of water pumps in the system transmission process, thus significantly reducing operating costs.  

  3. Modular Pressurized System, Constant Temperature and Pressure, Stable and Comfortable Water Supply  

In non-pressurized systems, hot water is pressurized by a booster pump and cold water is pressurized by the municipal pipe network, making it impossible to maintain balance due to different pressure sources for hot and cold water. Also, open water tanks fill from the top, easily causing hot and cold water mixture in the tank, resulting in inconsistent temperature at the water usage end.  

  4. No Secondary Pollution, Water Tank Does Not Need Frequent Cleaning  

Air energy water unit uses compartmental heat storage technology, with no coils inside the water tank, effectively resisting the growth of bacteria. With distributed water tank layout and dynamic water supply, it targets no water mixture, no scale, ensuring the cleanliness of the water tank and maintaining the quality of hot water.  

  5. Modular Combination, Flexible Installation  

The modular pressurized water tank has a small footprint, low height, and light weight, can be tightly and seamlessly arranged in combination, adaptable to a variety of installation spaces. Standardized on-site construction is easy: system positioning, followed by connecting water, electricity, and water pipes, without the need for on-site refrigerant charging and welding, can be completed in a short time.  

  6. Multi-functional, Hot water, Bubble bath, Constant temperature swimming pool  

The system can be equipped with multiple operating systems and can provide at least 5 concurrent water supplies. It can be used to connect to showers, bubble baths, constant temperature swimming pools.  

  7. Multi-energy Supporting System  

Depending on energy conditions of different projects, it can carry multiple energy combination water systems such as "air energy module pressurized solar energy", "air energy module pressurized gas boiler", "air energy module pressurized electric boiler".  

  8. High System Integration, Enhancing Stability and Reliability  

With a bright future, air energy heat pump has seen numerous product manufacturers flooding the market in just a few years. Aside from uneven product quality, most companies can only supply heat pump units, but rely on corresponding supporting manufacturers for water tanks, solenoid valves, electric heating systems, etc. This leads to poor system integration making later installation challenging, hence the industry saying: "30% depends on the product, 70% depends on the installation."  


In contrast, commercial pressurized heat pump hot water systems have high integration, not only offering factory quality but also making later installation more convenient: After system positioning, only water and electricity need to be connected, there's no need for onsite refrigerant charging and welding. Unlike traditional heat pump systems with uncontrollable installation and construction quality, this system's strong integration ability makes it extremely stable and reliable.  


YIJIAREN's "Direct Heating + Pressurized" air-energy heat pump system uses a closed-cycle pressure module water tank, which is well-insulated and has little heat loss. Together with the heat pump's design, it provides an energy-saving and comfortable hot water solution for premium hotels, guest houses, hospitals, gyms, health clubs, clubs, baby bathing and living studios, foot massage shops, etc.  


   1. The water tanks are evenly distributed, uniformly pressurized to meet the structural load requirements of the building.  
2. Both cold and hot water are sourced from the municipal pipeline, maintaining balanced pressure to avoid sudden temperature fluctuations.  
3. Based on hotel accommodation characteristics, modularized hierarchical hot water supply allows for variable capacity supply, reducing partial electricity expenses.  
4. Distributed water tank layout enables dynamic water supply without mixing or scaling.  
5. Integrated accessories result in a nine-tenths product to one-tenth installation ratio, ensuring a more stable system.  
6. Multiple operating systems can be configured to connect with hotel showers, soaking tubs, and temperature-controlled pools based on different requirements.  
7. Lower operational costs: Pressurized air-source systems save around 30% in operational expenses compared to open-air systems (due to lower operational power and better insulation). The entire system operates automatically, eliminating the need for manual supervision, thus saving manpower and resources, equating to savings as wealth.  
8. Lower maintenance costs: Pressurized water tanks come with magnesium rods to protect the tanks and undergo regular sterilization for better water quality, eliminating the need for booster pumps.  

  Previous Engineerings    未标题-3.jpg  未标题-4.jpg  未标题-5.jpg  


About Us


Jiangsu Obuy New Energy Development Co., Ltd. (brand name "Yijiaren") is an environmentally friendly industrialized enterprise engaged in the research, production, and sales of new energy products such as heat pumps and solar energy. The company primarily manufactures air-source heat pumps and solar energy products, undertaking projects involving solar hot water, air-source hot water, commercial HVAC, fresh air systems, drying engineering, and more. These products find extensive applications in enterprises, hotels, hospitals, schools, nursing homes, fitness clubs, industrial units, agricultural drying, and other fields.

30% of the company's products are exported, with 60% allocated for domestic projects and 10% for domestic distribution. Our products are sold in 75 countries and regions worldwide.

 Our company focus on integrating hot water, floor heating, air conditioning, and fresh air systems, aspiring to establish itself as an integrated service provider in the new energy and construction sector, committed to investment economy, energy efficiency, and satisfactory service within the industry.

Since its establishment, the company has obtained ISO9001: Quality Management System Certification and ISO14001:2004 Environmental Management System Certification. We have gathered renowned scholars within the industry and, relying on our robust product design research, marketing and sales capabilities, technical expertise, and excellent service, have earned acclaim.

In furthering the advancement and safety of engineering systems and ensuring a more user-friendly, intelligent design, we pay attention to detail, diligence, dedication, and enthusiasm in opening new chapters. We aim to provide a taste of life that is more energy-efficient, environmentally friendly, intelligent, and comfortable.

We employ optimal solutions and business models to achieve your pursuit of low-carbon environmental values, constructing energy-saving, healthy, and harmonious homes.

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1. Our well-trained and experienced team offers exceptional patience and service.

2. Sample can be offered, with sample charge and courier fee by buyer's side.

3. We have full stock, and can deliver within short time. Many styles for you to choose. 

4. OEM and ODM order are accepted, any kind of logo printing or design are available.

5. We highly value your feedback upon receiving the goods and are committed to resolving any issues promptly.

6. We ensure the confidentiality of your sales area, design concepts, and all private information.

7. We have rich experience of design, manufacture and sell Solar Water Heater and heat Pump, we cherish every order from our honor.

8. You're warmly invited to visit our factory at your convenience.







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