How to choose air conditioner? My family has changed three sets, and we have summed up a lot of experience from selection method to installation.

Air conditioning can be said to be available in every household, but not many people really understand air conditioning.

Have you ever had such an experience? In winter, the air conditioner can't be turned on for a long time, but the car that has been driving for a long time is still shivering with cold. The cooling of air conditioner is not good in summer. The electricity meter at home clicked and the electricity bill was paid. To be honest, I feel sorry for you.

In the final analysis, it's all because the air conditioner is not selected. In fact, I didn't know much about air conditioning before, and I stepped on many pits like everyone else. Some time ago, my house was renovated, and I just changed three air conditioners, which summed up a lot of experience.

In this issue, we will tell you how to choose a good air conditioner from two aspects: the purchase method of air conditioner and the matters needing attention in installation. The content is long, but it is of great reference value, which can make you know more about air conditioning selection!

At present, the types of household air conditioners in the market are divided into central air conditioners, duct fans, wall-mounted air conditioners and cabinet air conditioners.

How to choose a family? We can choose different air conditioners according to the type, room size and daily needs.

1, central air conditioning: also known as multi-connection, it is an external machine connecting multiple internal machines, which is mainly divided into wind system, water system and Buddha system. Ordinary houses generally adopt Buddhist system, large flat floor or villa, which is suitable for water system, and most shopping malls adopt wind system.

The advantage of central air conditioning is high comfort, because each indoor unit has an air supply outlet and an air return outlet, so the air circulation is more reasonable, and it can maintain a constant temperature of plus or minus one degree, making the indoor temperature more balanced. In addition, the top air supply will not blow directly to people, so it is more comfortable from the sense of body.

Its disadvantages are, first of all, high price. Secondly, the installation has limitations, because the pipeline needs to be hidden, so it has to be a ceiling. Therefore, if the floor height is not high enough and central air conditioning is installed, the indoor space will be particularly depressed. In addition, installation and post-maintenance are more troublesome. If there is something wrong with the machine in the later stage, the ceiling will be removed for maintenance.

If your home is large, multiple rooms will be used frequently, and economic conditions permit, I suggest you choose central air conditioning first.

2, air duct machine: the full name of air duct machine central air conditioning, the biggest difference is that it is cheaper than central air conditioning, and air duct machines can only be dragged one by one, and central air conditioning can be more than one generation. In addition, if the developers of new houses don't reserve enough space for outdoor air conditioning, and you can't hang outdoor air conditioning on the facade, then the ventilator is not suitable for you.

The advantages of air duct machine are similar to those of central air conditioning, and compared with wall-mounted and vertical air conditioning, it has good aesthetics and high comfort. Disadvantages are high energy consumption and high noise. It is recommended to choose products of big brands when choosing air duct machines. Functional quality including after-sales service is guaranteed.

If it is only for the living room, it is suggested that the combination of duct fan and wall-mounted air conditioner is more economical and applicable.

3, wall-mounted air conditioning: wall-mounted air conditioning is also a kind of split air conditioning, everyone has seen it. From the appearance, the wall-mounted type is small, usually between 1p and 2.5p, and the applicable area is about 20 square meters, which is more suitable for small areas such as study and bedroom.

The advantages of wall-mounted air conditioner are low price, simple installation and convenient later maintenance. Therefore, it is more economical and practical, and it is also the first choice for household air conditioners. The only drawback is that the bare tube is not very beautiful.

4. Cabinet air conditioner: also known as vertical air conditioner, as the name implies, it is placed on the ground. Compared with wall-mounted air conditioners, wall-mounted air conditioners are larger and consume more power, usually more than two. The maximum air supply distance can reach 15 meters, and with wide-angle air supply, it is really more comfortable than wall-mounted air conditioning.

But the disadvantage is that the price will be more expensive than the wall-mounted air conditioner, and it is bulky and takes up more space. Therefore, cabinet air conditioners are more suitable for large living rooms with enough space or places with small office space.

According to the size of the home, choose different numbers, that is, the cooling capacity of the air conditioner. The number of air conditioners is actually the input power of air conditioners, which also directly determines the speed and effect of room cooling and heating, which is particularly critical.

Only by choosing the right number of people can we have a better experience.

Usually, the cooling capacity of an air conditioner is 2500W, the cooling capacity per square meter is 150~220W, and the heating capacity is 200 ~ 250 W. You can calculate how many air conditioners you want to buy according to this formula.

It doesn't matter if you're too lazy to count. I made a table here for your reference.

It should be noted that in actual use, air conditioners are also affected by many factors, such as tightness, thermal insulation effect, floor height and opening time. So remember, in principle, buy a big one, not a small one.

The first reaction to seeing constant frequency and frequency conversion is that it only needs one degree of electricity every night. Many people think that choosing inverter air conditioner is equivalent to saving money, but it is not.

The difference between fixed frequency and variable frequency refers to whether the working frequency of the compressor is variable. The compressor of constant frequency air conditioner has only two states: on and off. Whether you adjust the temperature to 16 or 26 degrees, the air temperature it blows out is actually fixed at about 4 degrees.

When the inverter air conditioner compressor is just started, it will run quickly with relatively large power, quickly cool the house, and naturally consume more electricity. But when the temperature drops, frequency conversion can reduce the frequency and maintain the temperature with low power consumption.

In fact, frequency conversion and frequency conversion air conditioners consume more electricity in the first two or three hours of work, and save more electricity when used for a long time. So the working principle of inverter air conditioner determines that it can't save much money. Counting one year, saving one or two hundred dollars is too much.

Compared with power saving, the biggest advantage of inverter air conditioner is low energy consumption and low noise, and it can control the outlet temperature more accurately, so that the indoor temperature fluctuation is not obvious, which can bring a more comfortable experience. Therefore, it is also the first choice for household air conditioners at present.

Fixed-frequency air conditioners consume a lot of electricity, make a lot of noise, and are hot and cold, but the price is cheap, which is not totally not recommended. That doesn't need a high indoor temperature, it's only for short-term use. For example, meeting rooms and small warehouses are more suitable.

In addition, there is a full DC inverter air conditioner, that is, the motors in the air conditioner are all DC inverter, which can control the frequency, which is reflected in our daily use, that is, there will be more blowing gears. But the price is relatively high, and it is mostly used for household central air conditioning.

Grade energy efficiency is an important criterion to judge the performance of air conditioning.

The energy efficiency rating of high-efficiency energy-saving air conditioners means that the higher the energy efficiency ratio, the higher the rating, which means that the products are more energy-saving and electricity-saving. The first-class energy efficiency is the highest standard, and the fifth-class energy efficiency is the lowest threshold level for products to enter the market. The difference between the two is six or seven hundred yuan a year.

Therefore, it is recommended to give priority to the first-class energy-efficient air conditioner.

Air conditioning is not only important in type selection, but also in installation. It is said that air conditioning is "three points to see the product, seven points to rely on installation." If the installation is not good, both the performance and experience of the machine will be greatly reduced.

First of all, when installing the air conditioner, try to install it in a well-ventilated place, which will help the heat dissipation of the machine. In addition, when installing the internal machine, try to avoid blowing directly at people. Or simply choose windless air conditioning.

In addition, the following points should be noted during installation:

For the purchase of air conditioners, as long as the basic functions of refrigeration, heating, dehumidification and air supply are met, as for some additional functions, such as electric auxiliary heating, self-cleaning, sterilization and intelligent remote control. Personally, I don't think it is necessary at all because it is rarely used. Moreover, the fewer functions, the less likely it is to cause problems, and the longer the service life.

Regarding brands, Xiaodong can tell you responsibly that there is no problem in choosing domestic brands. As we all know, Gree, Midea and Haier are among the best in both product performance and after-sales. In addition, products such as Midea's sub-brand Hualing and Haier's sub-brand Commander Air Conditioning are also very cost-effective. Of course, if you are not short of money and are willing to pay for the brand premium, you can also choose high-end models such as Daikin, Mitsubishi and Hitachi.

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