quality High Temperature Heat Pump & Co2 Heat Pump factory

As winter approaches, the most concerned issue of the Fengnan Education Bureau of Tangshan City is how to make school heating energy-saving and safe?   In the past, most schools used traditional heating facilities such as coal-fired boilers and oil-fired boilers as the heat source of the hot water system. When the equipment is running, there are disadvantages such as high heating cost, high maintenance cost, and great safety hazards, and it will also cause great pollution to the environment.   With the continuous and in-depth promotion of energy conservation and emission reduction, the Fengnan Education Bureau of Tangshan City selected air source heat pumps for the heating renovation project of primary and secondary schools. During the purchase period, many brands and products were screened, and Leomon heat pumps were finally selected for its service. 1. Constant temperature comfort -35℃ stable heating Tangshan, Hebei Province belongs to the temperate monsoon climate zone, with mild spring and summer, cool autumn, cold and dry winter, and the lowest temperature can reach -20℃. In such a severe environment, ordinary heating machines usually cannot be operated outdoors.   After the project was confirmed, Leomon's professional technical team quickly conducted a field investigation of the project. Combining previous project experience, local climate environment and the actual needs of the school, the equipment installation location was determined after repeated communication with the project leader, and the school was equipped with a Leomon60 HP ultra-low temperature air source heat pump as a heating device.   The ultra-low temperature air source heat pump has innovative technologies such as intelligent control, AI adaptive defrosting, and EVI jet enthalpy increase technology, which greatly improves the heating efficiency of the heat pump under low temperature conditions. It can also maintain stable operation in the ultra-low temperature weather of minus 35℃, providing teachers and students with a comfortable living and learning environment.   2. Energy saving and environmental protection reduce school expenditures The air source heat pump adopts remote intelligent control, which can set the indoor temperature for each period. When students are resting, the temperature in the classroom can be set at a low temperature, which is energy-saving and environmentally friendly, reduces the school's expenditures, and can ensure the insulation of indoor pipes and water pipes in winter, preventing freezing and cracking, which can be said to kill two birds with one stone.   At present, the heat pump has been running for two heating seasons in primary and secondary schools in Fengnan District, Tangshan City. According to feedback from school leaders, Leomon air source heat pumps have been able to meet supply needs, save labor input costs and management costs, reduce operating expenses, achieve energy conservation and emission reduction, and save more than 200,000 yuan in heating costs each year. Even in extremely cold conditions, heating needs can be guaranteed, which has won unanimous praise and praise from teachers and students.   3. Avoid safety hazards to ensure the safety of teachers and students Heating safety is the top priority of campus heating. Compared with coal-fired boilers, air source heat pumps do not use fuel, do not produce polluting emissions, and will not cause safety accidents such as fires; in addition, its water-electricity separation design also eliminates the risk of electric shock, making heating safer.   Leomon's service Over the years, Leomon has been favored by so many users, in addition to its mature heat pump technology and excellent quality, because it has a strong product supply capacity and perfect installation and after-sales service capabilities.   Air source heat pumps are widely used for clean heating in hotels, factories, schools, office buildings and other fields. The products are exported to more than 60 countries, focusing on providing customers with customized energy-saving and environmentally friendly heating and cooling solutions. In the future, Leomon will continue to deepen its presence in the heat pump field and provide more suitable heating and cooling experiences for more users and a wider range of scenarios.

1. Thermodynamic Background Based on the Carnot cycle, the theoretical maximum COP of an air source heat pump is defined as:   COP_max = T_hot / (T_hot - T_cold)   Where T is the absolute temperature in Kelvin. The formula shows that the smaller the temperature difference between the source and the sink, the higher the efficiency.   In real systems, the actual operating temperature is much lower than this theoretical maximum. According to the ASHRAE Handbook (2020), modern air source heat pumps typically only achieve 40% to 60% of the Carnot limit due to thermodynamic losses and component inefficiencies.   Engineering Insight: The Carnot principle is a valuable benchmark, but real-world system behavior is driven by compressor performance, refrigerant thermophysical properties, and system control strategies. 2. Field Data The European Air Source Heat Pump Association (EHPA) provides seasonal performance test results that highlight the impact of falling ambient temperatures:   When the outdoor temperature drops from 7°C to -7°C: The air source heat pump COP drops from 4.2 to 3.1 (-26%) The ground source heat pump COP drops from 5.1 to 4.3 (-16%)   These trends are prevalent in climate zones with higher heating demand. For example, in southern Finland, some residential units have recorded COP values below 2.0 during prolonged cold weather.   3. COP Reduction Mechanisms Lower outdoor temperatures can cause a significant drop in the COP of air source heat pumps for the following reasons:   1) Lower evaporation pressure, higher compressor pressure ratio, and increased energy consumption   2) Reduced refrigerant mass flow, impairing heat transfer to the evaporator   3) Frequent defrost cycles, which consume auxiliary power and disrupt steady-state operation

What is the effect of a large number of air source heat pumps? How much electricity does it take to start the machine for one hour?   Taking a house of 100 square meters as an example, using an air source heat pump requires about a 5HP air source heat pump with a heating power of about 4KW, which means that the power consumption is about 4 degrees per hour. So, does it mean that it takes nearly 100 degrees of electricity to run 24 hours a day? Of course not. When the indoor temperature reaches the set value, the inverter air source heat pump will shut down directly, and the inverter air source heat pump will enter a low-frequency operation state, and the power consumption is very small at this time. In other words, the energy-saving effect of the air source heat pump is closely related to the insulation of the house, because when the floor heating is heated for the first time, the ground and walls will be heated first. If the house has poor insulation and heat loss is fast, the actual operation time of the air source heat pump will be extended, and the power consumption will naturally be greater.   In addition, the operating cost of the air source heat pump is also closely related to the outdoor ambient temperature. After all, the air source heat pump is a device that only needs a small amount of electricity to drive and mainly compresses and absorbs heat from the air to generate heat. When the ambient temperature is high, the air source heat pump consumes the same amount of electricity and can generate more heat. In the icy and snowy environment, its energy efficiency will be greatly reduced.   However, you don’t have to worry about the air source heat pump not being able to generate heat in a low temperature environment. At present, Leomon’s new generation of ultra-low temperature Jingxiang A7 air source heat pump can already generate heat stably in a low temperature environment of -35 degrees Celsius, which can meet the heating needs of most areas in the north.

Air source heat pumps are already used in many homes and commercial buildings. Here are some tips to help reduce air source heat pump maintenance costs:   1. Regular cleaning Clean the filters and outdoor unit regularly to keep the air source heat pump system running smoothly. 2. Timely maintenance If your air source heat pump system makes unusual noises or does not heat properly, check it out immediately. Timely repairs can avoid more expensive problems.   3. Professional annual service Invest in a professional service once a year to detect potential problems early.   4. Consider maintenance plans Some air source heat pump companies offer maintenance plans that can save a lot of annual service costs and other benefits through regular charges.

Several factors affect the size (heating or cooling capacity) of the air source heat pump you need: 1. Size of the house Larger homes generally require larger capacity air source heat pumps.   2. Climate Homes in cold climates require more heating capacity than homes in warm climates.   3. Insulation A well-insulated home may not require as much heating or cooling capacity as a poorly insulated home.   4. Number of windows Windows can significantly affect the heat loss of a home, which can affect the size of the air source heat pump required.   5. Building materials Different materials have different levels of insulation, which affects the efficiency of an air source heat pump.

Leomon is a professional Chinese heat pump manufacturer established in 2005, producing a wide range of heat pumps, including air-to-energy heat pumps, DC inverter heat pumps, and pool heat pumps.   Our inverter heat pumps comply with EN14511 standards and have obtained MCS, SAA, ROHS, TÜV, ERP, CCC, CE, and CB certifications.   We partner with leading companies such as Panasonic, Carel, Grundfos, and Copeland to ensure the highest quality. Leomon has three production bases, 40 automated production lines, and 24 international laboratories certified by TÜV Rheinland, Intertek, SGS, and Kiwa, with a total production capacity exceeding 2 million units per year.   With heat pump solutions certified to global standards and an extensive sales network, Leomon's heat pumps are sold in over 80 countries, including Europe, North America, Australia, Asia, and other regions.   Leomon also collaborates with local heat pump companies on OEM/ODM services. We can customize and manufacture heat pumps for our partner brands and meet European standards.   If you require an inverter heat pump, please contact us. Our heat pump experts will provide you with the best information and quote.

Leomon is one of China's most professional high temperature heat pump manufacturers, established in 2005. We produce high-temperature heat pumps with outlet water temperatures ranging from 95°C to 150°C.   We can customize heat pumps according to customer requirements. Our mission is to fully meet our customers' needs. Our heat pumps comply with EN14511 standards and have obtained MCS, SAA, ROHS, TÜV, ERP, CCC, CE, and CB certifications.   We have three production bases, 40 automated production lines, and 24 international laboratories certified by TÜV Rheinland, Intertek, SGS, and Kiwa, with a total annual production capacity exceeding 2 million units.   Leomon's high temperature heat pumps have earned a strong reputation among customers worldwide, particularly in Europe, such as Germany, Poland, the Netherlands, the Czech Republic, Denmark, Italy, Russia, Slovakia, Serbia, Romania, and other countries.   If you have a heat pump project, please contact us. We can provide you with the best high temperature heat pump solutions.

As a leading exporter of CO2 heat pump systems, we provide efficient, environmentally friendly heating and cooling solutions for a variety of applications worldwide.   Our CO2 heat pump systems have a wide range of applications. They excel in residential heating, especially in colder regions where efficiency gains are significant. In the commercial sector, they are ideal for supermarkets and facilities requiring continuous cooling and heating. Industrial applications include high-temperature processes and space heating in harsh environments. Features 1. Water can be heated up to 90°C. High-temperature output reduces the size of the water storage tank, making it suitable for certain applications (disinfection, cleaning). 2. Suitable for low-temperature environments. Effectively provides heat even in -43°C environments. 3. Maximum COP of 5.5, with our versatile models reaching a maximum COP of 7 (providing free cooling while generating heat). 4. Inverter control provides variable power according to actual needs, saving energy. 5. Modular design allows for higher power output through combined installation. 6. Six levels of pressure protection. 7. Intelligent variable frequency control, achieving 50% energy savings during defrost. 8. Intelligent wireless control, also available via RS485/Modbus central control. 9. Programmable digital interface with touch keys. 10. Integrated design, eliminating the need for additional high-pressure refrigerant connections.   Specifications INVERTER CO2(R744) heat pump specification Model LYD 7ZW(40L-260L) 8ZW 14ZW 25ZW 40ZW 50ZW 75ZW 120ZW Standard temperature condition Heating Capacity kW 6.8 7.8 13.6 24 40 51 75.5 125.4 Hot water capacity L/H 129.9 149 259.8 458 764 974 1442 2396 Heating power input kW 1.51 1.7 3 5.3 9 11.3 16.7 26.6 COP W/W 4.5 4.58 4.6 4.5 4.4 4.5 4.5 4.7 Low temperature condition Heating Capacity kW 5.8 7 12.1 20 35 45.6 64 95 Hot water capacity L/H 97.7 118 203.9 337 590 768 1079 1602 Heating power input kW 1.47 1.7 3 5 9.4 12 16.8 24.3 COP W/W 3.9 4.1 4.1 4 3.7 3.8 3.8 3.9 Ultra-Low temperature condition Heating Capacity kW 5.3 6.5 11.2 14 28 35.7 49.1 78 Hot water capacity L/H 89.3 109 188.8 236 472 601 826 1315 Heating power input kW 1.46 1.71 2.9 4.8 10.1 12.3 16.8 26 COP W/W 3.62 3.8 3.9 2.9 2.8 2.9 2.9 3 Power supply V/Ph/Hz                   Heating type   Direct Rated output water temperature ºC 45 Maximum output water temperature ºC 95 Work ambient temperature ºC (-)25-43 Compressor Type Panasonic Torin(Italy) Defrosting type     Bypass Water connection pipe size mm DN15 DN20 DN25 Water side heat exchanger Type Tube-Tube type Air side heat exchanger Type High efficiency copper tube(Interior Screw) nested in aluminium fin Refrigerant Type R744/CO2 Dimensions Length mm 520 910 910 1280 1803 1803 2046 2468 Width mm 520 430 430 800 830 830 1106 1368 Height mm 1700 1000 1000 1500 2100 2100 2300 2413 Unit noise level   dB(A) 40 42 45 46 49 50 54 65 Net weight   kg 132 130 181 380 525 650 980 1350 Inverter   DC AC Note:                     1.Standard temperature condition:Ambient temperature 20ºC,Water temperature: inlet 15ºC,outlet 60ºC         2.Low temperature condition:Ambient temperature 7ºC,Water temperature: inlet 9ºC,outlet 60ºC           3.Ultra-Low temperature condition: Ambient temperature -7ºC,Water temperature: inlet 9ºC,outlet 60ºC           About Leomon As one of China's largest heat pump manufacturers, Kingrail Parts manufactures a wide range of CO2 (R744) heat pumps for residential and commercial applications, including inverter heat pumps for home heating and cooling, pool heat pumps, and heat pump water heaters.   Our CO2 (R744) heat pumps comply with international standards such as EN14511 and EN14825 and hold comprehensive certifications, including CE, ErP, Keymark, MCS, CB, and SAA.   Our Chinese heat pumps are exported to over 60 countries and are exclusively supplied to project contractors, wholesalers, and retailers, including Germany, Poland, the Netherlands, the Czech Republic, Denmark, Italy, and Russia.   Get More Help If you need a CO2 (R744) heat pump, please contact us. Our heat pump experts will provide you with optimal advice and a free quote.

Leomon's pool heat pumps utilize environmentally friendly R32 refrigerant, making them ideal for heating and cooling residential and commercial pools without damaging the ozone layer.   This pool heat pump features an ABS housing for excellent corrosion resistance and durability. IoT technology allows you to control the heat pump from your phone anytime, anywhere. Furthermore, a high-end Mitsubishi compressor ensures long-term, stable operation of the air-to-water heater.   Regardless of the size of your pool, we offer a variety of heating power options, ranging from 7 kW to 35 kW. Features 1. Heating and cooling functions 2. Corrosion-resistant titanium heat exchanger with long life 3. Multiple system protections - safe and reliable operation 4. World-class compressor 5. Self-diagnostics - error code display on the control panel 6. Galvanized power-coated steel cabinet 7. Higher efficiency: heating/cooling 8. Anti-freeze protection   Specifications Model PW010-KZXYC-C PW015-KZXYC-C PW020-KZXYC-C PW030-KZXYC-C PW040-KZXYC-C PW050-KZXYC-C Advised pool volume (m3) 15~30 20~40 25~50 30~60 40~75 55~100 Operating air temperature (℃) -7 ~43 Performance Condition: Air 27°C, Water 26°C, Humidity 80% Heating capacity (kW) 7.50~1.92 9.50~2.10 11.00~2.50 14.00~3.15 17.00~3.75 20.00~4.00 Heating Capacity (Btu) 25500~6528 32300~7140 37400~8500 47600~10710 57800~13090 68000~13600 Consumed power (kW) 1.36~0.15 1.73~0.16 2.00~0.19 2.54~0.24 3.1~0.28 3.64~0.31 COP 5.5~12.8 5.5~13.1 5.5~13.2 5.5~13.0 5.5~13.4 5.5~12.9 COP at 50% capacity 9.00 9.50 9.50 9.00 9.50 9.50 Performance Condition: Air 15°C, Water 26°C, Humidity 70% Heating capacity (kW) 5.80~1.42 7.2~1.50 8.5~1.65 10.7~2.40 13.0~2.65 15.6~2.85 Heating Capacity (Btu) 19720~4828 24480~5100 28900~5610 36380~8160 44200~9010 53040~9690 Consumed power (kW) 1.28~0.22 1.60~0.23 1.89~0.25 2.38~0.37 2.89~0.41 3.47~0.44 COP 4.5~6.5 4.5~6.5 4.5~6.5 4.5~6.5 4.5~6.5 4.5~6.5 COP at 50% capacity 5.20 5.50 5.50 5.20 5.50 5.50 Performance Condition: Air 35℃,Water 28℃, Humidity 80% Cooling capacity (kW) 4.0 5.2 6.0 7.2 8.6 10.1 Sound pressure at 1m dB(A) 38~48 38~48 40~50 42~51 43~52 43~53 Sound pressure of 50% capacity at 1m dB(A) 40 40 41 43 44 44 Sound pressure at 10m dB(A) 18~25 18~25 19~26 22~27 23~30 24~31 Heat exchanger Spiral titanium tube in PVC Casing Metal Casing Refrigerant R32 Power supply 220V~230V/1 Ph/50Hz~60Hz Water Connection (mm) Φ50 Rated input current at air 15℃ (A) 5.6~1.0 7.0~1.0 8.3~1.1 10.5~1.6 12.6~1.8 15.2~1.9 Advised water flux (m³/h) 2~4 2~4 3~5 4~6 6~9 8~10 Water Pressure Drop (max) kPa 2 3 4 5 5 6 Net weight/Gross weight (kg) 48/53 50/55 53/58 62/67 67/72 67/72 Product size (mm) 912*360*610 980*370*760 Operating water temperature (℃) heating 9 ~43 Operating water temperature (℃) cooling 9 ~35   About Leomon Leomon is a leading pool heat pump manufacturer in China, specializing in energy-efficient and efficient pool heating solutions.   With a monthly production capacity exceeding 25,000 units, we combine advanced engineering technology with strict ISO9001, ISO14001, and BSCI standards to provide the highest quality products.   Each EXINDA pool heat pump is CE, UL, SAA, and CB certified, meeting the diverse market needs of North America, Europe, Australia, and South America.   Each unit undergoes 100% inspection, enthalpy performance testing, and noise verification, and is covered by global product liability insurance to ensure long-term reliability.   Get More Help If you need a pool heat pump, please contact us. Our heat pump experts will provide you with optimal advice and a free quote.

Our CO2 (R744) heat pump. This system heats water by capturing heat from the air. It's ideal for homes and businesses. Compared to traditional heaters, it uses less energy, making it a green and environmentally friendly choice.   Our heat pump uses CO2, making it environmentally friendly. It performs well even in cold weather, keeping heating costs low year-round. It's easy to install and requires minimal maintenance. It's durable and reliable.   Choosing our CO2 (R744) heat pump means choosing a better environment for the planet. It consumes less electricity, helping to reduce your bills. Features: 1. Eco-friendly R744 refrigerant with low global warming potential 2. High efficiency and performance in cold climates 3. Advanced DC inverter technology for energy savings 4. Intelligent control features for ease of use 5. Durable design capable of withstanding high pressures   Specifications: Model LMDS 40ZW-R 75ZW-R 120ZW-R 160ZW-R Air Source. Ambient 20℃, Heat Sink 15/60℃ Heating Capacity kW 40 75.5 125.4 163 Hot water capacity L/H 764 1442 2396 3114 Heating power input kW 9 16.7 26.6 36.1 COP W/W 4.4 4.5 4.7 4.51 Air Source. Ambient 7℃, Heat Sink 9/60℃ Heating Capacity kW 35 64 95 147 Hot water capacity L/H 590 1079 1602 2478 Heating power input kW 9.4 16.8 24.3 33.2 COP W/W 3.7 3.8 3.9 4.4 Air Source. Ambient -7℃, Heat Sink 9/60℃ Heating Capacity kW 28 49.1 78 104 Hot water capacity L/H 472 826 1315 1753 Heating power input kW 10.1 16.8 26 33.6 COP W/W 2.8 2.9 3 3.1 Water Source. Chilled water inlet/outlet 12℃/7℃, Heat Sink 15/60℃ Heating Capacity kW 35 65 93 133 Hot water capacity L/H 660 1240 1750 2540 Heating power input kW 9 16.2 25.5 36 heating COP W/W 3.89 4.01 3.65 3.69 Cooling Capacity kW 21.8 37.5 70 99 Cool water capacity L/H 3700 6440 12000 17000 Total COP(cool+heat) W/W 6.31 6.33 6.39 6.44 Power supply V/Ph/Hz   380~440V/3PH/50~60Hz Heating type Type Instant Rated output water temperature ℃ 60 Maximum output water temperature ℃ 90 Work ambient temperature ℃ (-)25~43 Compressor Type Dorin Bitzer Circulation water pump Brand VFD Wilo Power kW 0.37 0.55 1.1 1.85 Defrosting type By-pass Heating connection pipe size mm DN20 DN25 DN32 DN40 Cooling connection pipe size mm DN32 DN40 DN50 DN80 Hot water heat exchanger Type PHE Air side heat exchanger Type Condenser Coil Water Source heat exchanger Type PHE Refrigerant Type CO2/R744 Controller Brand Carel Dimensions Length mm 1803 2046 2468 3855 Width mm 830 1106 1368 1123 Height mm 2100 2300 2413 2108 Unit noise level   dB(A) 60 65 70 75 Net weight   kg 650 980 1350 2200 Inverter(VFD) Type AC   About Leomon As one of China's largest heat pump manufacturers, Kingrail Parts produces a wide range of CO2 (R744) heat pumps for residential and commercial applications, including inverter heat pumps for home heating and cooling, pool heat pumps, and heat pump water heaters.   Our CO2 (R744) heat pump products comply with international standards such as EN14511 and EN14825 and hold comprehensive certifications including CE, ErP, Keymark, MCS, CB, and SAA.   Our Chinese heat pumps are exported to over 60 countries and exclusively supplied to project contractors, wholesalers, and retailers. These include Germany, Poland, the Netherlands, the Czech Republic, Denmark, Italy, and Russia.   Get More Help If you need a CO2 (R744) heat pump, please contact us. Our heat pump experts will provide you with the best advice and a free quote.