quality High Temperature Heat Pump & Co2 Heat Pump factory

Cold Dew is coming, and the temperature drops sharply. Some cities in the north have started heating, and in the north, a considerable number of families have already used air source heat pumps. However, no matter how eager you are to turn on the air source heat pump, you must do a good job of inspection in advance.   The air source heat pump has stopped working for several consecutive months. If the heat pump is not well maintained, the system will inevitably have some minor problems. It is necessary to carry out relevant maintenance in time, which will greatly improve the energy-saving efficiency and service life of the heat pump and reduce the failure rate. Otherwise, it is easy to cause problems for winter heating. 1. Check whether the power switch and the wiring of the equipment are loose, and the wiring should be firm; whether the power cord and the controller signal line are aging or damaged, if so, please replace them in time.   2. When there are things blocking the air source heat pump, it is easy to affect the heat absorption and heat dissipation of the machine, thereby increasing power consumption. Therefore, the area around the air source heat pump should be kept clean and dry, with good ventilation. Do not pile up debris on the top cover and around the air source heat pump to keep the machine in good working condition.   3. Check the water system of the heat pump equipment, check whether the water valve switch position is correct, whether water needs to be replenished, whether the water pressure is normal, whether the air in the pipeline is drained, whether there are any leaks, etc. If there is a serious leak, you should contact a professional for repair in time.   4. The air source heat pump also needs to be cleaned regularly, otherwise the deposited dust and scale will not only reduce the thermal efficiency but also shorten the service life. In order to avoid affecting the heat pump, it is necessary to clean the outdoor unit heat exchanger (1-2 times a year) and condenser regularly. Use tap water and a soft brush to clean the surface of the external unit casing. Pay attention to the water pressure and direction, and do not let water flow into the external unit electronic control part. When cleaning, the soft brush needs to be brushed along the direction of the fins to avoid damaging the fins.   Final summary It is recommended that you keep the above maintenance methods for future use. Only by properly and reasonably maintaining the air source heat pump can you effectively extend the service life of the air source heat pump, reduce losses, ensure the safe operation of the air source heat pump, and be responsible for the health and safety of yourself and your family!

A common question is: Is it normal for heat pump noise when air source heat pump is defrosted?   If your air source heat pump makes a loud noise in cold weather, it may just be entering or exiting the defrost cycle - this is normal for winter conditions. In cold climates, the defrost cycle of an air source heat pump reverses the system to melt the frost. This can cause:   1. Valve shifting sound 2. Fan pause or rotation 3. Compressor restart   These changes can cause the air source heat pump to make noise temporarily, not malfunction.

In general, air source heat pump cooling consumes more electricity than heating. This is because the cooling process requires the transfer of heat energy from a low temperature environment (indoors) to a high temperature environment (outdoors), and this heat transfer process usually requires additional energy consumption.   In air source heat pump cooling, the working principle of the heat pump system is to recirculate the working fluid to achieve the purpose of heat exchange. The refrigerant absorbs indoor heat, then compresses it to increase the temperature, and finally releases the heat to the outdoor air. This process consumes electricity to drive the compressor and other auxiliary equipment, as well as to maintain the normal operation of the refrigerant in the cycle. In air source heat pump heating, the working principle of the heat pump system is to supply the indoor heat energy demand by absorbing heat from the outdoor air. Since the outdoor temperature is generally low and the heat required is low, the energy consumption in the heating process will be relatively low compared to the cooling process.   ​However, the specific energy consumption will also be affected by many factors, including climate conditions, indoor temperature, equipment performance and many other factors. Therefore, the energy consumption of air source heat pumps is different in different environments, and the energy efficiency should be evaluated and compared in combination with the specific equipment characteristics and application environment.

The technology behind commercial air source heat pumps is evolving rapidly. Several trends are likely to impact the future of these systems: 1. Higher temperature models Newer air source heat pump models can now produce water up to 80°C (176°F), making them suitable for more demanding applications.   2. Smarter controls IoT-enabled systems for air source heat pumps enable real-time performance monitoring, remote diagnostics, and integration with building energy management systems (BEMS).   3. Natural refrigerants There is growing interest in using low-GWP refrigerants, such as CO2 or hydrocarbons, to make systems more environmentally friendly.   4. Hybrid systems Combining an air source heat pump with a gas boiler or solar collector can provide the highest efficiency and adaptability.

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.

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.