Air source heat pump has remarkable characteristics of energy saving, environmental protection, safety and easy management, which is favored by many schools, hotels and families. Now it is widely used in hot water and heating supply systems of schools, hotels and families, and is well received.

However, some heat pump hot water engineering gradually exposed many problems in the use process, including the heat pump hot water unit itself, engineering installation, use management and other aspects, resulting in abnormal hot water supply, excessive energy consumption, high hot water cost and other consequences; Learning from the past and learning from the past, it is actually very simple to become a heat pump purchasing expert, so can you. As long as you grasp the key points of choosing a good pump, everything will be solved, and the good or bad heat pump products will never escape your eyes.

Let's learn to master some characteristics of air source heat pump and some skills in actual selection.

Select key points of heat pump unit

1. Production license: Because air source heat pump is a professional product with strict technical requirements, the product you want to choose depends first on whether it has obtained the national industrial product production license issued by the State Administration of Inspection and Quarantine (you can check the authenticity on the Internet according to the certificate number provided by the manufacturer to prevent forgery, and the following certificates are the same). Enterprises without certificates can be regarded as illegal production, and the products have not been tested by the state authorities, so it is difficult to guarantee the quality and performance. At the same time, manufacturers, distributors and consumers must bear the responsibility. Taking it as the first key point is mainly based on the following two points:
A, reduce the legal risk from 100% to zero, and make a purchase without legal risk;
B, more than 95% of heat pump products can be eliminated, and you can only choose what you want from 5%, effectively reducing risks and workload and improving accuracy.
2. Registered trademark certificate: According to the relevant commodity circulation regulations, as a commodity, the brand of heat pump must be registered and licensed by the Trademark Office before it can be sold to prevent some "three noes" manufacturers from making trouble; More than 20% unqualified heat pump products can be eliminated, and the reliability of selection can be improved.
3. Performance test report: After testing by the national authoritative department, the products whose performance meets the relevant standards are qualified. The higher the detected cop value, the more energy-saving it will be. The good air source heat pump is more than 10% higher than the ordinary one, so sometimes you can't be greedy when buying. Because of the small loss, the good products will save you more.
4. 3C certification: The heat pump water heater unit is a national compulsory certification product, which must be tested by China Quality Certification Center and obtained China National Compulsory Product Certification (CCC certification) before it can be sold and used.
5. Unit structure and weight: There are three main reasons for the difference in product weight:
Evaporator, condensing heat exchanger and shell; Units with the same structure and lighter weight are suspected of cutting corners, and the performance is difficult to be guaranteed because of the light or shortage of materials.
6.Type of compressor: compressor is compared to the heart of heat pump unit, and its performance is very important; At present, the commercial large-scale heat pump unit is the best one with the compressor of American Valley Wheel. Of course, it is necessary to ensure that it is the original factory to prevent some manufacturers from shoddy and using the repaired compressor.
7. Electronic control technology: If the compressor is the heart of the heat pump, then the electronic control is the brain of the heat pump. An excellent electronic control motherboard can effectively solve the complicated problems of the heat pump unit, with simpler installation and more flexible control, and effectively reduce the minor faults of the heat pump unit in operation, thus ensuring its stability.
8. Throttling technology: Throttling technology is a key to optimize the performance of heat pump units. At present, there are capillary throttling and thermal power
Expansion valve
The electronic expansion valve throttling technology is the most advanced among the three throttling technologies, which can effectively solve the problem of frosting of heat pump units in winter, achieve higher energy efficiency ratio and more stable and reliable performance.
9. Shell technology: neat and beautiful appearance, well-made sheet metal and stable and reliable structure are the standards of a good product. The shell technology level of a product will reflect the positioning and manufacturing concept of their products. Usually, enterprises with poor shell materials, unsightly and unwilling to spend money will not invest much in other parts, and most of them are made in a rough way.
10. Production equipment: Only good production equipment can make good heat pump products. At least there must be a professional performance test room and test workshop. Do you dare to ask for a product that leaves the factory without passing the test?
11. System matching level: Whether a heat pump product can run stably under different air temperature and water temperature is crucial, just like the chassis control technology of an automobile. High-level heat pump products can not only cope with the high pressure caused by high air temperature, but also solve the frosting problem of low air temperature, with low failure rate and simpler maintenance! This has a lot to do with the technical strength of an enterprise.
12. Engineering installation level: A good product needs good installation. Finding a professional and experienced installation team is the key to the success of a heat pump hot water engineering, because there are many projects that install a good heat pump product badly, and energy-saving projects become energy-consuming projects, which shows the importance of installation.
13. After-sales service: Any product may fail, and timely and capable after-sales service is very important; First, it should be timely; second, it should be capable (if it is broken, it can be repaired; however, some manufacturers can't even repair their own products if they are broken, which will cause great trouble); third, it should be guaranteed according to national regulations (mechanical and electrical products are 18 months).