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Cleaning the filter of an air source heat pump is a simple DIY task that can significantly improve system efficiency and indoor air quality while extending the equipment's lifespan.   Here is a step-by-step guide to cleaning it safely and effectively: Step 1: Turn off the system For safety and to prevent the fan from blowing dust around, turn off the heat pump first.   Step 2: Locate the filter The filter is always located on the indoor unit (air handler), never on the outdoor condensing unit.   Step 3: Remove the filter Carefully slide the filter out.   Step 4: Check the filter type Disposable filters (fiberglass or pleated paper): These are not washable. If they are dirty, clogged, or have been used for more than 1–3 months, replace them with a new filter of the exact same size and MERV rating.   Step 5: Clean reusable filters 1) Vacuum first: Take the filter outside or near a trash can. Use a vacuum cleaner with a soft brush attachment to gently remove loose dust, pet hair, and debris from both sides of the filter. 2) Rinse with water: Take the filter to a sink or bathtub, or use a garden hose. Rinse with warm water.   Step 6: Dry thoroughly This is the most critical step. The filter must be completely dry before reinstallation. Shake off any excess water.   Step 7: Reinstall the filter Once the filter is completely dry, slide it back into the slot. Ensure the airflow indicator arrow points toward the air handler/blower motor (i.e., the direction of airflow).   Step 8: Turn the system back on Restore power at the circuit breaker (if it was previously cut off) and reset the thermostat to the desired heating or cooling mode. Expert tips for heat pump filter maintenance 1. Frequency: Check the filter once a month. Clean or replace it every 1 to 3 months, depending on usage.   2. Do not blindly upgrade the MERV rating: When replacing the filter, follow the manufacturer's recommended MERV rating (usually MERV 8–11).   3. Outdoor Unit Maintenance: Although the filter is located indoors, be sure to keep the area around the outdoor unit clean. Remove fallen leaves, snow, and debris (maintaining a clearance of at least 2–3 feet) to ensure unobstructed airflow.   Tip: If issues such as weak airflow, abnormal noise, or rising energy costs persist after cleaning the filter, please contact a licensed HVAC technician for a professional inspection.

Yes—and it is more important than most people realize.   A well-maintained air source heat pump can last 15 to 20 years. If maintenance is neglected, its lifespan can be significantly shortened, while system efficiency and warranty coverage may also be compromised. Here is why annual maintenance is crucial: 1. Efficiency: According to Vaillant, a poorly maintained heat pump can consume up to 25% more electricity than a well-maintained one. Over the course of a full heating season, this can have a significant impact on your energy bills.   2. Warranty: Most manufacturer warranties (typically 7–10 years) require documented annual maintenance. Missing a service could void your warranty.   3. Lifespan: Regular maintenance allows small issues to be detected early, preventing them from escalating into costly repairs. Minor refrigerant imbalances or clogged filters, if left unaddressed, can cause serious damage to the system over time.   4. Think of it like car maintenance. You might skip servicing for a year or two, but you will eventually end up spending more to fix problems that could have been caught early through annual maintenance.

Installing an air source heat pump can take several days, as there are many factors to consider. Here is an overview of what you need to know:   1. The air source heat pump unit itself must be installed outdoors on a level concrete base. Unlike ground-source heat pumps, no excavation is required. Installers will ensure there is adequate airflow and that the unit is positioned at a suitable distance from neighbors.   2. Installers will connect the heating flow and return pipes, as well as the electrical wiring, to the exterior of your home. Once this is done, they will move indoors to continue the installation. 3. Most heat pumps require the installation of a new hot water tank inside the home.   4. In most cases, you will need to replace some or all of your radiators. The main exception is if the house is already set up for a heat pump; in that scenario, installers would replace existing radiators and connect the new air source heat pump. Alternatively, if you use underfloor heating, the installers would either install a new system or connect the air source heat pump to your existing one.   5. All controls and thermostats will need to be installed inside your home.   6. Installers will tidy up the site and explain how the system works. They will also start up the system to ensure it operates according to the manufacturer's standards.   As you can see, installing an air source heat pump is a significant undertaking. However, the impact on your home depends on your current system. If your existing pipework is relatively new and compatible with the new setup, the installation might take just 2 to 3 days with minimal disruption to your daily life.   Conversely, if your pipes and radiators need replacing, work will be required in every room, involving the lifting of carpets and flooring.   Regardless of your current system, it will need to be disconnected while the new system is being installed. This means you will be without heating and hot water for at least one day.

An air source heat pump (ASHP) is a highly efficient, eco-friendly solution for year-round home comfort, providing heating in the winter and cooling in the summer. However, due to their heavier operational loads and extended run times, they require regular maintenance.   Neglecting ASHP maintenance might seem like a way to save time and money in the short term, but it ultimately leads to a host of problems. Here are the primary risks associated with ignoring maintenance needs:   1. Sharp Drop in Energy Efficiency and Skyrocketing Electricity Bills The most immediate consequence of neglecting maintenance is a decline in energy efficiency.   1) Restricted Airflow: Dirty air filters and clogged outdoor coils force the system to work harder to intake air and transfer heat.   2) Refrigerant Issues: Insufficient refrigerant—often caused by undetected minor leaks—severely impairs the system's ability to absorb and release heat.   3) The Result: A poorly maintained ASHP may consume 20% to 30% more energy to achieve the same level of comfort. Any energy costs you "saved" by skipping maintenance will quickly be offset by rising monthly electricity bills. 2. Frequent Breakdowns and High Repair Costs Regular maintenance allows technicians to identify and resolve minor issues before they escalate into catastrophic failures. Without it, small problems accumulate:   1) Loose electrical connections can cause control boards to burn out.   2) Slightly worn capacitors can lead to compressor failure.   3) Inadequate lubrication can cause motor bearings to seize.   Once these components fail, you face steep emergency repair costs. Even worse, if the system breaks down during the sweltering heat of summer or the freezing cold of winter, you might have to wait days for necessary parts and a technician, leaving you without heating or cooling in the meantime.   3. Significantly Reduced System Lifespan A well-maintained ASHP can last 15 to 20 years (sometimes even longer). Because ASHPs operate year-round—functioning as air conditioners in the summer and heaters in the winter—they experience roughly twice the wear and tear of a standard air conditioner. If maintenance is neglected, the excessive strain placed on the compressor and other moving parts can cause the system to burn out in as little as 7 to 10 years, forcing a premature replacement that costs thousands of dollars.   4. Voiding the Manufacturer's Warranty Many homeowners are completely unaware of this risk. Most major air source heat pump manufacturers require proof of annual professional maintenance to keep the equipment warranty valid.   If your compressor or a major component fails during the fourth year of a 10-year warranty, the manufacturer will likely ask for maintenance records. If you cannot provide them, the warranty will be voided, and you will have to pay the full cost of replacement parts and labor out of pocket.   5. Reduced Indoor Comfort and Air Quality A poorly functioning heat pump will struggle to maintain consistent temperature and humidity levels.   1) Uneven Heating and Cooling: You may notice temperature fluctuations throughout your home and frequent system starts and stops (short cycling).   2) Poor Air Quality: If filters are never changed and the indoor evaporator coil is never cleaned, the system will circulate dust, pet dander, pollen, and potentially mold spores throughout the house.   3) Unpleasant Odors: Moisture and debris accumulating inside the unit can foster mold growth, causing a musty smell whenever the system starts up.   6. Safety Hazards and Property Damage Although heat pumps are generally very safe, severe neglect can lead to genuine safety hazards:   1) Electrical Fires: Worn wiring, corroded contacts, or rodent damage inside the outdoor unit can cause arcing or short circuits, creating a fire risk.   2) Water Damage: In winter, air source heat pumps rely on a defrost cycle to melt ice accumulating on the outdoor coil. If the defrost sensor or reversing valve malfunctions and isn't addressed, the coil can freeze into a solid block of ice; as it melts, water may overflow the drain pan and seep into the home's foundation or walls.   3) Refrigerant Leaks: Undetected leaks not only reduce system efficiency but can also release environmentally harmful refrigerant into the atmosphere. The Bottom Line   Treating heat pump maintenance as an "optional expense" is ultimately counterproductive. While annual routine maintenance typically costs only a few hundred dollars, it ensures lower energy bills, preserves warranty coverage, maintains home comfort, and extends the system's lifespan.

No, continuous operation does not inherently shorten the lifespan of an air source heat pump. In fact, modern heat pumps are designed for stable, long-term operation, and continuous running is often more beneficial for the system than other operating modes.   Here is a detailed analysis of how continuous operation affects your heat pump and the factors that influence its lifespan: 1. Continuous Operation vs. Short-Cycling 1) Continuous operation is normal and efficient: Heat pumps are designed to run steadily for extended periods to maintain a stable indoor temperature. * Continuous operation within normal parameters does not harm the system's performance or lifespan.   2) Short-cycling is the real enemy: Frequent, brief start-stop cycles (short-cycling) place immense mechanical and electrical stress on the compressor—the most expensive and critical component of the system. * The stress caused by frequent starting and stopping is far more likely to lead to premature wear and tear than steady, continuous operation.   3) Inverter technology helps: Modern inverter-driven air source heat pumps can adjust the compressor speed (e.g., operating at 35% to 100% power). This "soft-start, continuous-run" mode allows the system to precisely match heating or cooling loads, thereby reducing wear and extending the system's lifespan. 2. Issues with Continuous Operation While steady operation is generally fine, it is a red flag if the heat pump runs continuously at maximum power yet fails to reach the temperature set on the thermostat. This can shorten the system's lifespan and is usually caused by the following factors:   1) Improper sizing: An undersized unit will run incessantly in a futile attempt to heat or cool the space, wearing out components and causing energy costs to skyrocket.   Conversely, oversized equipment leads to frequent cycling (starting and stopping), which also causes damage.   2) Maintenance issues: Clogged air filters, low refrigerant levels, blocked outdoor coils, or a stuck defrost cycle can force the system to run continuously to compensate for lost efficiency.   3) Extreme weather: In bitterly cold weather, a air source heat pump may need to operate continuously. While cold-climate heat pumps can handle these conditions, relying on electric resistance heating (auxiliary/emergency heat) for extended periods when the main heat pump is struggling increases the load on the entire system.   3. How to Maximize the Lifespan of Your Heat Pump A well-maintained air source heat pump typically lasts 15 to 20 years.   To ensure you meet or exceed this benchmark:   1) Ensure proper sizing and installation: A professional should perform a Manual J load calculation to ensure the equipment perfectly matches your home's heating and cooling needs.   2) Maintain a stable temperature: Use a programmable or smart thermostat to maintain a consistent baseline temperature. Avoid drastic, sudden adjustments to the thermostat, as forcing the system to "catch up" creates unnecessary strain.   3) Perform regular maintenance: Change or clean air filters every 1 to 3 months, keep the area around the outdoor unit free of debris (maintaining at least 2 feet of clearance), and schedule annual professional inspections to check refrigerant levels, electrical connections, and coils.   Summary: Do not panic if your heat pump runs for extended periods, especially during moderate or extreme weather conditions; it is operating exactly as designed. The goal is to avoid the mechanical stress caused by frequent starting and stopping, meaning that steady, continuous operation is actually a sign of a healthy, well-functioning system.

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.