The weather is getting hot, and everyone is also considering buying an air conditioner. Here I would like to share with you some things to note before purchasing. If there are any deficiencies, please add them: 1. Floor location: Is it on the top floor ( If it is on the top floor, it will easily absorb sunlight in summer). ps: If it is on the top floor, the air conditioner should be larger than the original one. 2: Room layout: Whether the windows directly expose the solar energy to the home in the afternoon (afternoon solar heat and ultraviolet rays). Are there many indoor corners? ps: If it is exposed to the west and has too many corners, you should also choose a larger one. Three: People: How many people are there in the family, whether there are more children or elderly people. ps: The main purpose is to analyze the flow of people at home. The large flow of people needs to be taken into consideration for air conditioning, cooling and heating. Four: Practical area of ??air conditioner (popular version): Within 12 square meters = 1 small horse (23 machines) Within 16 square meters = 1 horse (25, 26 machines) Within 20-23 square meters = 1.5 horses (35 machines) 25- Within 33 square meters = 2 horses (0 machine) Within 35-40 square meters = 2.5 horses (60 machines) Within 40-50 square meters = 3 horses (72 machines) This value is suitable for users with simple conditions, such as the above For conditions such as 1, 2, and 3, the p number of the air conditioner will be relatively increased. Five: How to choose an air conditioner: It is better to choose a large air conditioner than a small air conditioner (the maximum error here is about half a p, which is equivalent to 12 square meters. Originally, I need to buy a small 1p, but I live on the top floor. Then I have to buy at least 1p). In addition , factors that affect the cooling capacity required in a room include not only the size of the room, but also the direction of doors, windows, exterior walls, number of residents, electrical equipment, etc. are also important factors. Six: Air-conditioning accessories The current market understanding is: Pipeline: The original package of the air-conditioning hanger is about 3 meters, and the cabinet unit is about 4 meters. (Mitsubishi Electric's pipelines need to be one meter longer, that is, 4 meters for the hanging machine and 5 meters for the cabinet machine). Brackets: Nowadays, manufacturers do not provide brackets for delivery, but small stores provide them, and hypermarkets sometimes require money to buy them. (Mitsubishi Electric's original package includes the original bracket, and some Haier models include the bracket). Seven: Air conditioner installation conditions This is usually very important. The air conditioner is a semi-finished product, and if the conditions are not good enough, additional money will be required. Three points for quality, seven points for installation. Therefore, understanding the installation conditions of air conditioners will also save a lot of time and unnecessary trouble in our purchase. 1. Bracket (except for some models of Mitsubishi and Haier, which are provided with brackets): If your community has an air conditioner, you don’t need a bracket. If you need to hang the outdoor unit on the wall, you need to buy it. Depending on the situation, limited quantities will be delivered during holidays. 2. Pipes: Pipes other than the original packaging cost money to buy. 3. Install the outdoor unit: Can the outdoor unit go out from this floor? Some friends have anti-theft nets on their windows and they are welded shut. If the outdoor unit cannot be taken out, it needs to be lifted down from upstairs. Resulting in crane costs. 4. Wall holes: As far as I know, there is no one-time hole punching for free (it is made by a professional punching machine). The holes are all made with free impact drills. 5. This is very important. Cabinet machines with more than 2 horsepower have no plugs. (An air safety switch needs to be installed due to the high power) These are some basic things of the air conditioner and some of them still depend on personal preference. I’m so tired, it’s time to eat! Consumers are reminded to pay attention to the following matters when purchasing and using air-conditioning products to avoid disputes as much as possible. Tip 1: Avoid the peak purchasing period. The peak period for air-conditioning consumption is mainly concentrated in July and August, during which merchants are often in a negative working state. Compared with the strong sales volume, the transportation vehicles and installation personnel are far from satisfied, which can easily lead to untimely installation and after-sales service. Consumers are advised to avoid peak buying periods and prepare in advance. Tip 2: Avoid conceptual confusion and do not blindly pursue fashion. New products are emerging in the air-conditioning market, and there are various healthy air-conditioning concepts such as photocatalyst, cold catalyst, oxygen bar, negative ions, and nanometers. It is understood that, except for light wave air conditioners, all current "healthy air conditioners" have not passed the testing of national authoritative agencies, and the various concepts and functions promoted by manufacturers are full of moisture. When purchasing, consumers should comprehensively consider the performance-price ratio of the product, and should not blindly pursue fashion and spend money to buy a bunch of "fancy" functions.

Tip 3: Check three important performance indicators. Cooling capacity: It is an important basis for consumers to purchase air conditioner products. If the cooling capacity is too small, the predetermined cooling effect will not be achieved; if the cooling capacity is too large, it will cause a waste of resources. National standards stipulate that the actual measured value of cooling capacity should not be less than 95% of the rated value. Energy efficiency ratio: refers to the ratio of cooling capacity to effective input power when the air conditioner is operating in cooling mode. The size of this value reflects the energy saving of the air conditioner product. The larger the energy efficiency ratio value, the smaller the electrical power required and the smaller the power consumption. Noise: The noise produced when the air conditioner is running. If the noise is too loud, it will seriously affect consumers' lives. Tip 4: Check the certification marks. Currently, there are two mandatory certification marks for air-conditioning products: one is the "3c mark", which is issued by the National Certification and Accreditation Administration Commission; the other is the "energy efficiency mark", which contains the energy efficiency ratio*** It is divided into five levels, with level one being the highest and level five being the lowest. When purchasing air conditioners, consumers should focus on checking these two marks and not be dominated by other certifications. Tip 5: Install according to specifications. There are corresponding technical specifications for the installation of air conditioners. Consumers must not randomly choose the installation location or replace random accessories in pursuit of environmental beautification. Before installation, you should check whether your own power supply, voltage, leakage protector, etc. can meet the requirements, and try to avoid places where flammable gases leak, artificial strong electricity is turned on, and magnetic fields are directly affected. After installation, it should be carefully inspected. Finally, perform a test run according to the requirements of the instruction manual. Tip 6: Correctly adjust the set temperature of the air conditioner. Usually when resting, sleeping, etc. with less activity, the room temperature is around 25°C and the human body feels comfortable. If the temperature is set too low, in addition to making people feel cold, it can easily cause the compressor to start and stop frequently, shortening the service life of the air conditioner. Tip 7: Clean and inspect the air conditioner regularly. Regularly removing the filter of the indoor unit for cleaning can effectively improve the dust removal effect of the air conditioner and improve the quality of ambient air. Regular cleaning of the heat sink of the outdoor unit can effectively improve its heat transfer coefficient and efficiency, and improve the working efficiency of the air conditioner. Having professionals check the air conditioner regularly, replace aging components in a timely manner, and replenish refrigerant can prevent aging components from harming the machine and human body, and keep the air conditioner in good working condition. Tip 8: The National Three Guarantees protect the legitimate rights and interests of consumers. Air conditioners are products under the Three Guarantees stipulated by the state. The Three Guarantees for the complete unit are valid for one year, and for the main components (including: compressor, fan motor, and thermostat), the Three Guarantees are valid for three years. . If the air conditioner has a performance failure within 7 days from the date of purchase, consumers can request a full return or exchange. If a performance failure occurs within 15 days, consumers can request depreciation, return or repair. If the air conditioner still cannot be used normally after two repairs within the three-guarantee period, consumers can request a return or replacement based on the maintenance records. Things to note when buying an air conditioner: First of all, the decision should be made based on the room size, orientation, floor level, and number of residents. In rooms facing sunlight or with poor ventilation, the power of the machine should be appropriately increased. Generally speaking: 1 air conditioner is suitable for a space of about 12 square meters, 1.5 air conditioners are suitable for a space of about 18 square meters, 2 air conditioners are suitable for a space of about 28 square meters, 2.5 air conditioners are suitable for a space of about 40 square meters, 3 air conditioners are suitable for a space of 50 square meters. A 5-hp air conditioner in a space of about 70 square meters is suitable for a space of about 70 square meters. 1. How to determine the cooling capacity. Many people are concerned about how to choose the cooling capacity of the air conditioner when purchasing an air conditioner. However, for 1 HP, 1.5 HP, and large Names such as 1 horse, 1.5 large horses, etc. are in the clouds, and I don’t know how to decide. In fact, it is very vague to use the concept of horsepower to describe the output cooling capacity of an air conditioner. "horse" originally refers to the output power of the compressor motor. The output power of 1 air conditioner compressor motor is 735w. As far as the current market is concerned, a 1-horsepower unit actually refers to an air conditioner with a cooling capacity of about 2500W, a 1.5-horsepower unit refers to an air conditioner with a cooling capacity of about 3500W, and a 2-horsepower unit refers to an air conditioner with a cooling capacity of about 5000W. air conditioner. Note that the 2500w, 3500w, and 5000w here are not the output power of the air conditioner, but the output cooling capacity. For a specific room, how much cooling capacity should be chosen per square meter? Many people want to know an accurate calculation formula.

Obviously, with this heating output capability, the temperature in the room cannot rise, and the heating effect is undoubtedly poor. 2. The room becomes slightly hot and then becomes cold immediately due to incorrect defrost setting. Defrost during the heating operation of a heat pump air conditioner is unavoidable. Since each defrost will cause the indoor unit to stop heating, defrost will occur. The length of time and frequency of defrost will directly affect the temperature in the air-conditioned room. Many consumers report that the temperature in the room using the air conditioner fluctuates, making people feel hot and cold. 3. Consumer response measures Before purchasing an air conditioner, consumers must understand whether the heating function of the heat pump type heating and cooling air conditioner is necessary and indispensable for your daily life. Since the working temperature of the heat pump air conditioner is between -5℃-42℃, if the outdoor temperature in the area where you live is lower than -5℃ in winter, the heat pump air conditioner will stop working. Therefore, there is currently no major problem with the heat pump air conditioner. Before technological breakthroughs, ordinary heat pump air conditioners should be chosen with caution. You may wish to choose an inverter air conditioner, an air conditioner with electric auxiliary heating, and other auxiliary heating appliances as a means of heating your home in winter. It must be noted that the stationmaster's air conditioner is not good at heating because it is only a simple electric heating air conditioner. 5. A correct view of healthy air conditioners. Although staying in an air-conditioned room is comfortable, if you do not ventilate frequently, it will lead to unpleasant feelings such as strong odor and poor air freshness. Excessive temperature difference between indoor and outdoor can also cause people to catch a cold. All of these reflect that improper use of air conditioners can lead to diseases, but can you sit back and relax with a healthy air conditioner? Not necessarily! A healthy air conditioner designed to improve air quality, no matter what form of air filtration is used Device or negative ion generating device installed on ordinary air conditioners only reflects the manufacturer's wish. Therefore, first of all, no healthy air conditioner can draw a scientific conclusion on how much harmful substances in the air can be absorbed by a certain form of air filtration device. Even if it has a partial effect, you still have to tell the expiration date. It is impossible to be "healthy forever". If frequent replacement of filter materials will increase the cost of use, it is better to simply purchase an air purifier. It remains to be considered whether consumers can complete the regular replacement of air filter devices by themselves. Secondly, although there is no objection that negative ions are beneficial to human health, there is a concept of effective concentration (concentrations for health care and treatment are also different) and requirements for effective distance (the farther the release port is from the person's breathing distance, the weaker the effect). I don't see any manufacturer that can explain this clearly. Medications that do not reach the dosage are equivalent to taking them in vain. No matter how high the concentration is, releasing a few negative ions at will will not bring health to people. As for the photocatalyst, is its effect as miraculous as commercial propaganda? How much energy can it absorb and decompose harmful substances? Over time, once dust accumulates on the catalyst, photosynthesis will also be lost. How can consumers solve it on their own? In the industry People’s opinions are that a healthy air conditioner cannot create health, but using air conditioners scientifically and correctly is still a reliable and effective way to ensure health: 1. Use air conditioning moderately; 2. Moderate indoor and outdoor temperature difference; 3. Timely use of air conditioners. Open windows for ventilation; 4. Suitable outdoor activities. Otherwise, not only will you lose your health, but it will even harm your health. When it comes to health issues, consumers cannot be half sober and half drunk. 6. The indoor unit of the air conditioner should not be too small. The indoor unit of the household split air conditioner has become a member of the bedroom, so its decorative requirements (appearance and shape) are a little more picky. In order to cater to the tastes of air conditioner consumers, some split air conditioner manufacturers have used their brains to change the shape of the indoor unit and try to reduce the size to create a distinctive visual effect. Blindly emphasizing the small, quantitative changes finally led to qualitative changes. Because the air duct of the indoor unit is narrow, the circulating air volume is small, resulting in slow heating speed and hot air can only circulate in a certain area. The uniformity of room temperature becomes worse and the heating effect is poor. Even if the air conditioner is running, a room will have two obvious temperature zones. If you stand under the air outlet of the indoor unit, your head will feel hot, but if you are a little distance away, you will feel like you need to put on extra clothes.

The efficiency of DC inverter compressors is 10 to 30 times higher than that of AC inverter compressors, and the noise can also be reduced by 5 to 10 decibels. In comparison, it can truly save electricity. Consumer reminder: The price of DC inverter air conditioners is relatively much higher, and compared with fixed frequency air conditioners, AC inverter air conditioners still achieve the characteristics of "fast cooling and heating, constant temperature", so consumers can choose according to their own needs. . Misunderstanding 4: Hypermarkets are the cheapest. Promotional quotes: Of course you have to go to chain hypermarkets to buy air conditioners. We guarantee the lowest prices in the city. At present, home appliance chain stores are becoming a strong sales channel for home appliances, and at the same time they often claim that their products are the “cheapest.” Price is a merchant’s biggest trump card and the ultimate expression of its profit, so it often takes the most brains and is ever-changing and elusive. It is often impossible for impatient consumers to "shopping around". At this time, you can check the model prices of various brands of air conditioners online, so that it is not easy for merchants to take advantage of price loopholes. Consumer reminder: In fact, large chain home appliance stores have increasingly turned to winning by reputation and service. Due to rising operating costs, it is impossible to give consumers a lot of price space. Many small air-conditioning shops on the street are actually a good choice. Most of these small shops are specialty stores of a certain brand. Their costs are lower and consumers have greater bargaining space. Savvy consumers may wish to give them a try. On-site experience is indispensable. Many manufacturers have prototype demonstrations at the purchase site, which allows you to reconfirm product quality through observation of the prototype. For businesses that do not provide on-site demonstrations, consumers should boldly request on-site experience. 1. Observe whether the shell is intact and smooth. 2. Whether the evaporator condensation fins are arranged neatly, whether they are loose, and whether they are inverted. 3. When purchasing a one-to-two air conditioner, be sure to confirm how many compressors it has. A one-to-two air conditioner should only have one compressor. If there are three compressors, the power consumption and sound will be much higher. 4. When starting the machine, pay attention to whether the indoor and outdoor machines are operating normally and whether there are any abnormal noises or friction sounds from the machine parts. 5. Convert the operating state and test again. 6. Touch the body lightly with your hand to feel if there are any abnormalities. 7. When purchasing imported products, you must identify the origin, manufacturer and various import procedures. 8. Be sure to identify the product, trademark, factory name and address. Users’ rights and interests must be clear, and after-sales services must be well based