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With the arrival of winter, air source heat pumps have been favored by more and more families as an efficient and environmentally friendly heating method. However, during use, some faults are inevitable. This article will provide some simple and practical troubleshooting methods for common faults that air source heat pump users may encounter during winter heating, helping everyone to easily cope with the challenges of winter heating.   1. Poor heating effect Fault manifestation The air source heat pump has poor heating effect, and the indoor temperature rises slowly or cannot reach the set temperature.   Solution 1) Check the outdoor temperature The heating efficiency of the air source heat pump will decrease at extremely low temperatures. If the outdoor temperature is too low, consider using auxiliary heating equipment.   2) Check the filter Clean or replace the air filter regularly to prevent dust clogging and affecting the heating effect.   3) Check the refrigerant Insufficient refrigerant will also affect the heating effect. Professionals need to check and add refrigerant.   4) Check the outdoor heat exchanger Make sure the outdoor heat exchanger is free of frost or ice. If so, defrost it. 2. Excessive noise Fault manifestation The air source heat pump makes abnormal noise during operation, affecting the quality of life.   Solution 1) Check the fixing screws Check whether the fixing screws of the air source heat pump and the pipe connection are loose. If they are loose, tighten them.   2) Check the fan blades Fan blade deformation or dust accumulation may also cause increased noise. Clean the dust or replace the fan blades.   3) Check the compressor Compressor abnormality may also cause noise. Ask a professional to check the operating status of the compressor.   3. Water leakage Fault manifestation Water leakage occurs at the heat pump or pipe connection.   Solution 1) Check the pipe connection Check whether the connection between the heat pump and the pipe is loose or not sealed tightly. Re-tighten or replace the seal.   2) Check the drainage system Ensure that the drainage system is unobstructed and clean the drainage pipes regularly.   3) Check the condenser A cracked or damaged condenser may also cause water leakage. Ask a professional to check and replace the condenser.   4. Display screen failure Failure manifestation The air source heat pump display screen cannot display normally or displays abnormally.   Solution 1) Check the power supply Make sure the heat pump power supply is normal, without voltage fluctuation or power outage.   2) Check the display screen connection cable Check whether the connection cable between the display screen and the mainboard is loose or damaged, and reconnect or replace the connection cable.   3) Reset the air source heat pump Try to reset the heat pump to see if it can restore normal display.   5. Automatic shutdown Failure manifestation: The heat pump suddenly shuts down automatically during operation and cannot continue to heat.   Solution 1) Check the temperature sensor Temperature sensor failure may cause the air source heat pump to misjudge the temperature and automatically shut down. Professionals are required to check and replace the temperature sensor.   2) Check the power protection Check whether the heat pump automatically shuts down due to power overvoltage, undervoltage or leakage protection. The power failure needs to be eliminated.   3) Check the high voltage protection If the heat pump high voltage is too high, it may also trigger the high voltage protection and automatically shut down. The high voltage failure needs to be checked and eliminated.   Final summary Although air source heat pumps may encounter some faults during winter heating, as long as we master the correct troubleshooting methods, we can easily cope with these challenges. Of course, in order to ensure the long-term stable operation of air source heat pumps, we also need to perform regular maintenance, such as cleaning filters, checking refrigerants, checking pipe connections, etc. At the same time, when encountering complex faults, you should contact professionals for repairs in time, and do not disassemble or repair the heat pump without authorization to avoid greater losses. I hope that through the introduction of this article, it can help everyone better use and maintain air source heat pumps and enjoy a warm and comfortable winter life.

For heat pump installers, controlling air source heat pump noise starts with smart choices in product and setup: 1. Avoid tight corners and windows Choose open, non-enclosed spaces to prevent noise reflection from air source heat pumps.   2. Install anti-vibration mounts These reduce the mechanical transmission of noise.   3. Secure all pipes Use a clamp every 0.5 meters to prevent movement and shaking.   4. Add noise barriers where necessary Particularly near property lines, these can reduce output by 2-5 dB.   5. Use inverter + CO2 air source heat pumps These typically have optimized fan curves and quieter startup profiles.   Our range of CO2 inverter heat pumps are carefully designed to keep air source heat pump noise below 40 dB in most practical situations.

Knowing how to calculate the energy efficiency rating of an air source heat pump will not only help us choose a more energy-efficient heat pump, but also effectively reduce energy consumption during use and achieve a green life.   What is the energy efficiency rating? The energy efficiency rating is an important indicator for measuring the energy efficiency of an air source heat pump. It reflects how much heat or cold energy a heat pump can generate while consuming the same amount of electricity. The higher the energy efficiency rating, the less electricity the heat pump consumes under the same conditions of use, and the more energy-efficient it is. Calculation of energy efficiency ratio The energy efficiency rating of an air source heat pump is usually determined by calculating the energy efficiency ratio. The calculation formula for the energy efficiency ratio is: heating capacity ÷ heating power consumption. The heating capacity here refers to the heat generated by the heat pump in a certain period of time, while the heating power consumption refers to the electricity consumed by the equipment when generating this heat.   For example, if a normal temperature air source heat pump has a heating capacity of 20000W and a power consumption of 4340W, then its energy efficiency ratio is 20000 ÷ 4340 = 4.608. According to the value of the energy efficiency ratio, we can determine the energy efficiency level of this heat pump.   Classification of energy efficiency levels The classification standards of energy efficiency levels may vary from country to country, but there is usually a clear energy efficiency ratio range corresponding to different energy efficiency levels. Taking the classification standards for a certain period of time as an example, the correspondence between energy efficiency levels and energy efficiency ratio numbers is as follows:   Level 1 energy efficiency: energy efficiency ratio 3.8-4.6 Level 2 energy efficiency: energy efficiency ratio 3.6-4.4 Level 3 energy efficiency: energy efficiency ratio 3.4-4.1 Level 4 energy efficiency: energy efficiency ratio 3.2-3.9 Level 5 energy efficiency: energy efficiency ratio 3.0-3.7   By comparing the energy efficiency ratio value of the air source heat pump with the above range, we can easily determine its energy efficiency level.   The relationship between energy efficiency rating and power consumption It should be noted that the energy efficiency rating does not directly represent the actual power consumption of the air source heat pump. It is only the ratio of heating capacity to power consumption, which is used to measure the energy efficiency of the equipment. Therefore, when comparing the power consumption of different heat pumps, we also need to consider the specific values ​​of its heating capacity and power consumption.   Purchase suggestions When purchasing an air source heat pump, we should not only pay attention to its energy efficiency rating, but also need to consider it comprehensively in combination with actual needs and usage conditions. If the heat pump utilization rate is high, especially when it needs to run for a long time, the first-level energy-efficient heat pump may have a slightly higher initial investment, but it can save more electricity bills in the long-term use process and is more economical.   At the same time, we should also pay attention to the energy efficiency label on the air source heat pump. The energy efficiency label is equivalent to the ID card and certificate of conformity of energy-consuming products. The energy efficiency label means that the product meets the national factory standards and has 3C certification. Buying a heat pump with an energy efficiency label can be used with more confidence.

Choosing the right air source heat pump system for your home and maintaining it properly can allow you to enjoy comfortable heating and cooling all year round. Here are some tips to help you better use your air source heat pump and extend its life. 1. Schedule regular maintenance Making sure your air source heat pump is inspected and maintained by a professional technician at least once a year can significantly extend its life. Regular maintenance includes cleaning the evaporator and condenser coils, checking the refrigerant level, and inspecting the electrical components.   2. Change the air filter regularly Dirty air filters will restrict air circulation and reduce the efficiency of the air source heat pump. Be sure to replace the filter every 1-3 months depending on usage and air quality.   3. Keep the outdoor unit clean Make sure the air source heat pump outdoor unit is free of debris, leaves, and snow to ensure air circulation. This helps prevent overloading the heat pump system and extend its life.   4 Upgrade to a More Efficient Model If your air source heat pump is more than 10 years old, you may need to upgrade to a newer, more energy-efficient model from Daikin, or Mitsubishi Electric. These new heat pumps can provide better performance and a longer life.   When should you replace an air source heat pump? Air source heat pumps typically have a lifespan of about 15 years, but regularly maintaining the pump and replacing filters in a timely manner can help you maximize your investment. It's best to consider replacing the pump when you notice warning signs, such as uneven cooling air or a drop in efficiency ratings.

Air source heat pumps are devices that use a small amount of electricity to drive the compressor to convert low-grade heat in the air into high-grade heat and transport it to the room. Compared with traditional coal-fired or oil-fired heating methods, air source heat pumps have obvious advantages in energy saving and environmental protection. Moreover, with the application and development of smart home technology, "intelligence" has become an indispensable part of modern home appliances. The intelligent control function not only makes operation more convenient, but also automatically adjusts the operating status according to actual needs to achieve more sophisticated energy management. Importance of intelligent control of air source heat pumps 1. Energy saving and consumption reduction Through the intelligent control system, air source heat pumps can monitor indoor temperature changes and external environmental conditions (such as seasonal changes) in real time, and adjust the working mode of the equipment accordingly to achieve the best energy utilization rate. For example, reduce the output power at night or when no one is at home to save electricity expenses; when the outdoor temperature drops sharply, start the heat pump preheating program in advance to ensure that the room always maintains a suitable warmth.   2. Improve comfort In addition to the basic constant temperature function, some high-end air source heat pumps are also equipped with accessories such as humidity sensors and air quality detection modules, which can quickly respond to situations such as excessive or low indoor humidity or the presence of harmful gases. This not only avoids the risk of respiratory diseases caused by excessive use of heat pumps, but also creates a healthy and comfortable living space.   3. Smart interconnection experience Air source heat pumps that support Wi-Fi connection or Bluetooth communication technology allow users to remotely control and set various parameter indicators directly through the APP on their smartphones. In addition, some manufacturers provide solutions compatible with mainstream smart home platforms, so that it is easy to achieve linkage and collaborative operation with other devices in just a few simple steps, greatly improving the convenience of daily life.

On November 1, 2025, Leomon successfully shipped 30 sets of R32 air source heat pumps (18kW each) to Canada. The shipment process was strictly monitored, and all products were securely packaged to ensure safe and undamaged transport. Our R32 air source heat pumps are designed and manufactured in full compliance with international heating standards. They feature excellent rapid heating, intelligent control, and automatic defrosting, ensuring stable operation under various outdoor temperature conditions.   This shipment further solidifies Leomon's growing position in the North American heating market and reflects the company's commitment to high-quality manufacturing, on-time delivery, and global partnerships.   Leomon will continue to provide reliable air source heat pumps to customers worldwide through advanced production technology and rigorous quality control.

On September 9, 2025, Leomon successfully delivered 10 sets of 45kW air source heat pumps to Italy. This delivery further demonstrates Leomon's continued commitment to the Italian residential heating market and its strong supply chain capabilities. Precision Products Designed for Specific Needs The 45kW air source heat pumps delivered this time were specifically designed and manufactured to meet the needs of residential heating. These products strictly adhere to EU standards, offering superior durability and reliability to ensure they meet the stringent requirements of local residential heating and hot water services.   Reliable Capability to Serve the Global Market As one of China's leading air source heat pump manufacturers, Leomon possesses mature production and export capabilities. With its strong production capacity and export-standard wooden packaging, the company ensures that its products are safely delivered to customers worldwide. Leomon's heat pump products have been exported to more than 30 countries and regions, including the United States, Germany, South Africa, and India, accumulating extensive experience in global transportation.   About Leomon Leomon offers a variety of heat pumps, including air source heat pumps, pool heat pumps, high-temperature heat pumps, and CO2 heat pumps. The company's heat pumps range from 10kW to 150kW and hold comprehensive certifications such as CE, ErP, Keymark, MCS, CB, and SAA. Leomon is committed to providing high-quality, highly reliable products and customized solutions to customers worldwide.

In May, Leomon completed the delivery of 15 sets of 6kW air source heat pumps to the Netherlands. This delivery marks another milestone in Leomon's ongoing collaboration with international heating operators and demonstrates the company's ability to provide large-scale, reliable supply solutions for demanding residential and commercial heating projects.   From design to delivery, the 6kW air source heat pumps underwent a complete industrial process on Leomon's production line. Advanced welding technology enhances the reliability of the unit system, potentially preventing refrigerant leaks. Axial fans are available, offering powerful airflow while maintaining low operating noise. Rigorous quality control procedures, including material verification, dimensional inspection, low-temperature testing, and noise testing, ensure that each air source heat pump meets stringent performance requirements before leaving the factory. To ensure the integrity of the products during transportation, the logistics arrangements for this shipment were carefully coordinated. Each air source heat pump was properly packaged to prevent corrosion and deformation and loaded strictly according to operating procedures. Leomon's supply chain team worked closely with logistics partners to optimize shipping routes and schedules, ensuring the safe and timely arrival of the air source heat pumps to support residential heating and hot water needs in the Netherlands.   This delivery will directly support local residential heating and hot water needs, helping to improve heating efficiency and reduce carbon emissions. For Dutch heating operators, replacing existing boilers with 6kW air source heat pumps means better heating stability, more efficient energy use, and longer maintenance intervals—all crucial for both residential and commercial heating.   Leomon's export business spans numerous international markets, including the United States, South Africa, Mexico, Turkey, India, the Netherlands, Kenya, Algeria, Mauritania, Iran, Brazil, Australia, Bangladesh, and Ethiopia. With extensive experience, Leomon can tailor technical and logistical solutions to different climatic conditions while strictly adhering to relevant standards and operational requirements.   Leomon thanks its partners and customers in the Netherlands for their trust and looks forward to continuing technical cooperation and providing after-sales support. For information on specifications, power, or future orders, please contact the Leomon sales team – we are ready to provide you with customized air source heat pump solutions to meet your project needs.

Recently, Leomon completed the production and shipment of another 10 ultra-quiet 10kW air source heat pumps, which have been successfully delivered to Denmark. This model of air source heat pump is renowned for its superior quiet operation and intelligent control, and is widely used in various residential and commercial heating and hot water supply applications, enjoying high recognition from customers in the European market. During the production process, Leomon strictly controls every aspect, including raw materials, components, inspection, and packaging, ensuring that all products meet international export standards. All air source heat pumps undergo comprehensive quality testing to guarantee customers receive stable and reliable products.   This latest shipment demonstrates the continued trust of overseas customers in Leomon's products and services, and lays a solid foundation for future cooperation. With the growing global demand for high-performance residential heating equipment, Leomon will continue to uphold its professionalism and focused attitude, driving Chinese manufacturing onto the world stage.

On February 15, 2025, Leomon successfully delivered 36 sets of 12kW air source heat pumps to the United States. This delivery marks another significant step forward in Leomon's efforts to expand its position in the international heating and hot water equipment market.   The 12kW air source heat pump is a key product for Leomon, renowned for its energy efficiency, intelligent control, and low-temperature heating. These air source heat pumps are designed to meet the stringent requirements of modern heating systems, ensuring safe and efficient home heating. This shipment to the US underscores the growing demand for high-quality heating equipment in the North American market and reflects Leomon's commitment to providing reliable products to customers worldwide. Leomon has become a trusted supplier in the heating industry, renowned for its innovation and quality. The company possesses advanced production facilities and rigorous quality control processes to ensure that every product meets the highest standards. The 12kW air source heat pump is no exception; it underwent extensive testing and certification before being approved for international export.   This export to the United States is part of Leomon's overall strategy to strengthen its position in the global market. The company has consistently collaborated with international partners and participated in industry exhibitions to showcase its products and capabilities. The successful delivery of the 12kW air source heat pump fully demonstrates Leomon's ability to meet customer needs and adapt to the evolving demands of the rail industry.   As Leomon continues to expand its global business, the company remains committed to innovation, quality, and customer satisfaction. This delivery of 36 sets of 12kW air source heat pumps to the United States marks a significant milestone for Leomon in its pursuit of a leading position in the international heating equipment market.