Central air conditioning purchase basis
1. The amount of refrigeration (heat), energy efficiency ratio and noise are the three most important indicators for measuring the advantages and disadvantages of air conditioners.
1. The amount of heat removed from the confined space by the air conditioner during the cooling (heat) operation, the legal unit of measurement is W (Watts). The national standard stipulates that the actual cooling capacity of air conditioners should not be less than 95% of the rated cooling capacity.
2. The coefficient of performance (COP) refers to the ratio of the cooling capacity to the cooling power during the cooling operation of the air conditioner, in units of W/W. According to national standards, the energy efficiency ratio of 2500W air conditioners is 2.65; the energy efficiency ratio of 2500W to 4500W air conditioners is 2.70. The better the COP value, the more energy efficient the air conditioner. A COP value of 3.6 or more is a primary energy efficiency.
2, according to the power size can be divided into: home central air conditioning, commercial central air conditioning.
3, energy efficiency label: divided into 1 level, 2 level 3 level, 4 level, 5 level energy efficiency, level 1 energy efficiency is the highest, level 5 energy efficiency is the lowest. The smaller the number, the more energy efficient the air conditioner is.
Central air conditioning purchase tips
1. According to the structure of the building, choose the appropriate central air conditioner.
2. Select the central air conditioner according to the power supply matching 220V or 380V.
3. Select the energy control of the central air conditioner according to the purpose and function of the room.
4, pay attention to the brand of the central air conditioning unit, a company to choose a production base, so that the service is guaranteed.
5. The design and distribution of the central air-conditioning system must be checked by air-conditioning professionals.
Central air conditioning purchase tips
1. Choose a merchant that is satisfied with customer satisfaction or after-sales service.
2. Considering the input and output comprehensively, it is more cost-effective for the public to choose the energy efficiency of Class 2 and Class 3.
3, for the same style, the same brand of goods, from the quality, price, service and other aspects of comprehensive consideration. In terms of quality, we do not need to carry out the weight, more than 35kg is considered a qualified superior.
4, function selection. When purchasing a central air conditioner, you need to consider the functions of the air conditioning system. For example, the system also has heating, increases the air and humidification function of the organ, increases the filtering and dust removal functions, and increases the sterilization function of the fresh air pen.
5, decoration. Due to the installation of the central air conditioner in the home, after the renovation work, the installation plan must be determined when installing the central air conditioner. On the basis of ensuring the air conditioning effect, the installation position of the air conditioner indoor unit and the direction of the air duct are determined.
6, heating. Under normal conditions, it is not recommended to put heating and air conditioning together for single-user housing. The best situation is to have uniform heating or hot water supply from the property so as to ensure uninterrupted, so as not to cause adverse consequences.
7, installation authorization. In order to ensure the quality of the installation and the future use effect, only the company that has obtained the manufacturer's installation authorization has the right to install the corresponding household central air conditioning system. Special attention to the system warranty and the host warranty is not the same thing, the air conditioner manufacturer guarantees the performance of the air conditioner, and the system effect is guaranteed by the correct design and correct installation.
Central air conditioning purchase misunderstanding
1. The more complete the function, the better. Nowadays, there are many high-end air-conditioning products, such as nano, anion, oxygen bar, and sterilization. Some citizens think that the more complete the air-conditioning function, the better the quality, in fact, under the exaggerated propaganda of the business, the concept is confused, and many of the functions that look at the high-end are actually not used once after buying home. When purchasing, you should consider the cost performance comprehensively, and grasp the key functions such as cooling, dehumidification and sleep.
2, the number of large refrigeration is good. There are 1 air conditioner, 1.5 horses and 2 horses. It is an important basis for the public to purchase air conditioners. The meaning of 1 horse means that the cooling capacity is 2,500 watts per hour. Many people think that the greater the number of horses, the better the cooling effect, and the number of horses is too small to achieve the intended cooling effect. When purchasing air conditioners, citizens can choose different air conditioners according to the size of the room, thermal insulation performance, orientation, floor and other factors. Do not blindly pursue large numbers.
3. Choose your expensive central air conditioner to save electricity. The specific use effect of each type and model of home central air conditioning is not the same, not the most expensive is the most energy-saving. If a device with a large power is selected, the purchase cost is increased; if the device with a low power is selected, the energy consumption is increased in the later use. The equipment must be reasonably selected according to the calculated heat and cold load and the actual use of the home.
4. Choose good equipment and everything will be fine. The central air conditioner needs regular cleaning and maintenance so as to avoid malfunctions and prolong the service life of the equipment, so it is necessary to look at the warranty service of a merchant.
Central air conditioning purchase trap
1, beware of the virtual standard price. Many consumers watched the price of the heart drop straight out of the note, impulse to buy the electrical back home, can be carefully asked to find that "special offer and no special price" is a price. In this case, consumers are reminded that sometimes, in order to attract more consumers to buy, the seller will increase the price of the product and then give the special price hints, so that the buyer has a big price gap, which is easier. Heart purchase.
2, gifts and not gifts should enjoy three bags. When purchasing home appliances, many brands have advertised slogans for what they want to buy. Many consumers will be happy to consider them as affordable or practical. For example, buy air conditioners and other household appliances to send small appliances, but there are After a friend has problems in the use of gifts, when looking for a store staff member, the problem appliance is often not treated on the grounds that the gift has no three packs. According to the relevant regulations of the state, the gifts sent by the stores are included in the “three guarantees†of the state. If there are any problems in the use of the users, the relevant stores should be responsible for solving them.
Central air conditioning purchase process
Determine the host model → determine the indoor unit and the air outlet → determine the air conditioning layout → select the product that suits the price → select the service.
Central air conditioning quality brand
Midea, Haier, Daikin, Gree, Panasonic, Mitsubishi, etc.
Central air conditioning care
1. Regular inspection items every month
1. Is the screw of each device loose?
2. Clean the wind disk return air filter.
3. Clean up the ash accumulated on the heat exchanger.
4. Check for leaks in the pipe joints.
5. Check if the wire is worn, whether the connection is firm, and whether the contact points are burnt.
6. Check if the oil level of the compressor is normal.
7. Inject the butter once for each motor bearing.
8. Check if the cold water system is infiltrated with air and exhausted.
9. Is the refrigerant pressure normal?
10. Check if the water level of the expansion tank is normal.
2, half year inspection
1. Check the project execution by monthly.
2. Check the cooling water effect.
3. Clean the water pipe filter.
4, clean the dirt of the condenser copper tube
3. Annual inspection
1. Check the project execution by monthly.
2. Check if the insulation resistance value of the compressor is 10MΩ or more.
Central air conditioning service
1. The general project provides a 36-month warranty period after the self-regulation test. The installation of electrical pipelines, water supply and drainage pipelines and equipment is 3 years; the heating and cooling systems are 3 heating periods and cooling periods.
2. For major engineering projects, according to the requirements of the user or the installation unit, in the equipment installation and commissioning phase, people will be sent to the site for technical guidance, and the construction quality will be supervised to assist the owner to carry out the project installation and acceptance.
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