Before you buy an air conditioner, there are two questions about the model: first, what type of air conditioner does your room need; Second, it is more scientific to choose the power of this air conditioner.
Step 1: Select the type of air conditioner.
There are many ways to classify household air conditioners, but the most common ones are window air conditioners, wall-mounted air conditioners, cabinet air conditioners and embedded air conditioners.
First of all, we should determine the type of air conditioner to be installed according to our actual needs, living environment and installation conditions. Generally speaking,10 ~ 25m2 rooms are suitable for installing wall-mounted air conditioners. Its advantage is that it does not occupy the usable area of the room and has a wide application range, but it is not easy to clean and move because of its high position. A large room of 25~45㎡ is suitable for installing cabinet air conditioner (referred to as cabinet machine). Gorgeous appearance, high power, strong wind and convenient cleaning, but it will occupy room area, and because it must be connected with the outdoor machine, the placement position is limited.
Step 2: Calculate the power of the air conditioner.
From a national perspective, most consumers still choose air conditioning for summer, and consumers should reverse the power of air conditioning according to the cooling capacity required by the room. The cooling capacity of the air conditioner is expressed in watts (W), which refers to the heat discharged by the air conditioner from a closed room in a unit time. We can refer to the following formula: refrigerating capacity = room area ×90W~ 100W. For rooms facing the sun, with poor ventilation and many external walls or roofs, the air conditioning power should be appropriately enlarged.
Anyone who has bought air conditioners knows that air conditioners are called "small 1 PCs, positive 1 PCs, and large 1.5 PCs", and the price of air conditioners varies according to the number of people. Generally speaking, 0.5~ 1 is enough for the bedroom, and 1.5 or above is the best for the living room.
Policy 2: the principle of purchasing air conditioners.
After defining the type of air conditioner to be purchased, what principles should be adhered to in the face of a dazzling array of air conditioner brands and models?
Principle 1: "Be famous"
Good brand means high brand value; Large enterprises with strong design and development level; Sales volume and market share are leading. Buying air conditioners should give priority to well-known brands and mainstream air conditioning brands.
Principle 2: Pay attention to service.
We should put service as important as technology and price. As a "semi-finished product", air-conditioning can only be used after installation and debugging, and air-conditioning service should also accompany the whole future use period. The so-called good service not only refers to the through-train tracking service before, during and after sale, but also includes innovative services such as dust-free installation and safe power distribution. Now many big brands have put forward the "six-year warranty", that is, providing users with maintenance services free of charge within six years, and even some enterprises have put forward the service slogan of "lifetime free maintenance".
Principle 3: Function is practical.
In recent years, various new functions of air conditioning have been continuously introduced. We suggest that you choose a practical air conditioner according to your actual situation: for example, only air conditioners are used to cool down in summer, and you can choose a single cooling air conditioner; If you need air conditioning for heating in winter, you can choose cold and warm air conditioning; It is humid at home, so you can use the dehumidification function of air conditioner; If your home is not well ventilated and you feel bored staying at home for a long time, you can consider buying an air conditioner with healthy negative ions and oxygen bar functions.
Principle 4: Purchase Details
According to the relevant national regulations: "If there is a performance failure of the air conditioner within 7 days from the date of sale, consumers can choose to return it; You can choose to replace the air conditioner of the same model and specification within 15 days from the date of sale, but in the peak season of air conditioner sales, you are likely to encounter the situation of "invoicing before the goods arrive". If the arrival and installation time is a few days later than the invoice, you will lose several days of valuable time to find fault claims, and even lose part of the right to three guarantees. Therefore, before buying an air conditioner, consumers must ask the dealer about the delivery and installation time of the air conditioner, and even mark it on the shopping voucher.
How to choose the size of air conditioner according to the space? How is it calculated?
According to the room area, sealing and heat preservation conditions, floor, orientation, height and other conditions, the refrigeration capacity of household air conditioners is calculated according to the refrigeration capacity per square meter150-220 W. It's just that the cooling capacity can be smaller in summer. If air conditioning is needed for heating in winter, the cooling capacity will be larger.
For example, an air conditioner with a cooling capacity of 2500W is suitable for a room of about 12 square meters.
How to choose air conditioner?
A good air conditioner can last for ten years and the price is not low. Therefore, it must not be cheap to buy air conditioners. Buying an air conditioner depends on the product quality: 1. Whether to use a brand-name compressor, the heart of compressor air conditioning, and a good heart are of course important. 2. Whether to use high-quality and efficient heat exchangers, such as hydrophilic film trapezoidal aluminum sheets and internally threaded copper tubes. 3. Whether to use a large wind wheel with unequal cross-flow blades and a stepping TV to drive the wind pendulum to achieve ultra-quiet design. 4, whether super cooling (heating), quickly reach the set temperature. 5. Whether the appearance of the product is beautiful and harmonious with the home environment. 6. Refrigeration (heat) quantity of the product, and choose the appropriate refrigeration (heat) quantity according to the area of the room. 7. Does this product save electricity? Generally speaking, the higher the cooling capacity (heat), the more energy-saving the products with lower input power. 8, the length of life. Whether to use microcomputer fuzzy control to realize non-stop operation and whether to defrost automatically. 9. Look at the noise index of the product. 10, whether it has low voltage automatic compensation function and wide voltage working range. In addition, when buying an air conditioner, you must see that the fins of the evaporator and condenser are arranged neatly, the fins are not damaged, and the fins are closely connected with the copper tube without looseness. Check the operation of the air conditioner, start the air conditioner, and check whether there is abnormal noise in the operation of the compressor; The fan operates normally, with obvious difference between high, medium and low speed and low noise; There is also a flat appearance, beautiful appearance and good quality of plated parts. Four principles of air conditioning purchase: first, look at the brand. There are many air-conditioning brands on the market now, both at home and abroad, and most of them have their own unique advertisements, so it is difficult for consumers to choose. It is suggested that when purchasing air conditioners, choose products with strong enterprise strength, high brand awareness and perfect after-sales service. This is based on two considerations. The first is to ensure the implementation of after-sales service, because air conditioning is a household appliance and after-sales service is very important. According to the relevant national regulations, the compressor should be guaranteed for 3 years, and the competition in the home appliance market is almost fierce. Some manufacturers often have a short life cycle, and some collapse in three to five years. When an enterprise goes bankrupt, its promise will naturally be difficult to realize. Greedy and cheap, buy products with weak enterprise strength and low brand awareness, and there will be endless troubles. Secondly, consider the quality, because the quality of air conditioners with strong enterprise strength and high brand awareness is relatively stable. Such enterprises not only have strong technical strength, but also pay special attention to quality, so the quality of such products is guaranteed. The second is to choose a good business. After consumers choose the brand of air conditioner, they have to decide where to buy it. When buying an air conditioner, it is particularly important to choose a merchant. Because strictly speaking, the air conditioner is a semi-finished product, which can be used not after being bought from the store, but after being installed and debugged by a professional team. If the installation and debugging are not good, it will bring a series of problems, such as poor ventilation, water leakage of pipe joints, human failure during debugging and so on. These will not only affect the use effect, but also add a lot of trouble. At the same time, many after-sales service measures of manufacturers also need to be implemented and implemented by merchants. Therefore, it is very important to choose a good merchant. As for the choice of merchants, people in the industry suggest that those big merchants with strong local strength and influence should be chosen first, because these merchants have many kinds of business and sales, and generally have professional installation and debugging teams, with guaranteed installation and debugging quality and perfect after-sales service. Secondly, choose those businesses that sell air conditioners for a long time, and try not to buy them from short-term dealers, because such dealers' after-sales service will be greatly discounted. Third, measuring the house to buy air conditioning is a high-consumption household appliance. If the selected power is too small, it will not work; Too much power is wasted. Therefore, when consumers choose the power of air conditioning, they should measure the room to buy. First, don't be greedy. Some consumers like to buy large air conditioners, which is not desirable, because except for some special factors, household air conditioners have their scope of use. Consumers should choose the type of air conditioner according to the area of their room when purchasing. In general, the required cooling capacity and heating capacity of a room can be calculated according to the following formula. Cold storage area × 140W to180w; Heating room area × 180W to 240W. In addition, it should be increased or decreased according to the orientation, height and sealing degree of the room. The second is to choose according to the design of the room flexibly. Don't buy a large air conditioner in the living room to save the room like some families do. This will not only make it difficult to keep the room, but also cause waste. The reasonable way is to buy some low-power air conditioners according to the room type and manage each room. Therefore ... >>
How to choose the strategy of household air conditioning
1. Don't look at advertising, sales, ranking, after-sales, word of mouth and so on.
2. How big is the indoor area, whether to bask in the sun in the west, whether it is on the roof, how effective the sealing is, and then choose the appropriate number.
3. Fixed frequency or frequency conversion, the price of a good frequency converter 1p is mostly above 5000. Buy a fixed frequency to save money, and use frequency conversion to save electricity for a long time: it is relatively cost-effective to turn it on 24 hours. Frequency conversion is an imaginary way to make money. This technology is only in the hands of a few manufacturers. It is recommended to buy a fixed frequency.
4. Brand choice, domestic or joint venture. The most stable quality in China is beauty, and the price is directly proportional to the quality; In the global air-conditioning industry, the best quality is mitsubishi electric air-conditioning, and the price is also high. Large electrical appliances, it is recommended to buy joint ventures as much as possible, and the quality is guaranteed. (Air conditioners in mitsubishi electric can be used trouble-free for more than ten years)
Buying an air conditioner means buying a compressor and a circuit board. One is the heart and the other is the brain. None of the domestic brands have the ability to produce compressors, and all of them rely on Japanese imports.
How suitable is it for families to buy air conditioners?
The height of the house is not more than 3.5M, and the room area divided by 15 is the number of air conditioners you need.
How to choose home central air conditioning
Central air conditioning has become very popular in Shanghai, Beijing and some economically developed cities. But people in most areas still have little contact. Real popularization still has a long way to go.
I would like to take this opportunity to briefly talk about the purchase of home central air conditioning.
Before buying a central air conditioner, please consider the following questions:
1. First confirm the function of the air conditioner, whether it is single cooling or cold and warm. Nowadays, many families install floor heating or heating in the northern region, which can often be ignored.
2. The choice of air conditioning brands, including the characteristics of each brand of air conditioning, your needs, your budget, your recognition of the brand, the local influence of the brand (secondary conditions can be handled), the local after-sales service of the brand, and so on. At present, the high-end market of central air conditioning is basically monopolized by imported brands, with high price and relatively better quality than domestic ones. We don't want to worship foreign things, but we should also respect the facts.
Choose a good brand, then the next step is to choose air conditioning.
Nowadays, there are various models of air conditioners, and each manufacturer will tell you a bunch of models, and often the models are different, so the more businesses you consult and the more brands you contact, the less you know what you really need. Let's talk about some points that should be paid attention to in the selection of air conditioners.
1, find out your air conditioning habits first. For example, whether it is often used, how long it is basically used every day, and how long it is used in a year. How long do you want to live in this house, what effect you want to achieve, and so on.
2. Parameter selection of air conditioner. Generally, the central area is calculated by the unit cooling capacity per square meter 180-200 watts. For example, if the bedroom is 12 square meter, you can multiply it by 200 to get 2400 watts. Then you need to buy a 25-square indoor unit with a cooling capacity of 2500 watts. Because the guest dining room is used for space, and then the air circulation is relatively large, the general unit refrigeration capacity is relatively high, so it can be calculated according to 240, for example, a living room of 20 square meters can be multiplied by 240.
3. Parameter correction. Relatively speaking, it is better to enlarge the unit cooling capacity of larger and empty rooms, and the cooling capacity of sun rooms and rooms with large glass area should be enlarged and calculated. Otherwise, the glass surface will exchange heat with the outside world, which will affect the use effect of the air conditioner. Besides looking at the room area, we should also look at the actual use effect. The most common thing is that the bedroom often has furniture cabinets, which can be corrected appropriately.
4. External machine selection. If you choose an internal machine, you have to buy an external machine. Add up the internal machines you choose, and you will get a general idea of how big the external machine you want. Here's a concept, super match. Generally, 8P external machines and 9- 10P internal machines are all possible, because basically, the internal machines will not be fully opened, and people will not turn on air conditioning to study in the guest dining room. It should also be calculated according to the actual situation here. If you have a special hobby, you should be fully open, so I suggest you don't overdo it. The over-allocation rate of central air conditioners of different manufacturers and different series is different, which is generally 1 10%- 120%. This data can only be used as reference. Please ask the manufacturer for details. One more thing, if the external machine is generally above 8P, you need to use 380V electricity. Whether there is 380 V electricity should also be considered in advance.
5, the internal and external machines have been selected, so it is the most important thing to start. Select your dealer and installation unit. At present, companies that sell central air conditioners are generally responsible for installation, and when they quote you, they also quote you the equipment price and installation price together. It is particularly important to choose a company that is honest and pays attention to construction quality. There is some truth in the jargon of three-point quality and seven-point installation.
6. Supervision during installation. After the construction is completed, the pressure holding test must be carried out. When the air conditioner is generally used, the pressure of the liquid medicine in the copper tube is more than ten or twenty kilograms, and the pressure holding is generally required to be 38-40 kilograms. If under the pressure of 40 kg, the copper pipe does not leak and the pressure does not drop, it shows that the pipeline is well sealed. Basically, there will be no problem.
Then I don't need to say more about the quality and brand of various accessories, so beware of shoddy. After the condensate pipe is laid, experiments should be done to see if the condensate pipe is unobstructed and leaks. Because many brands of air conditioners don't have lift pumps, it is entirely up to the construction master to arrange the pipes. Generally speaking, the lowest landing point is required, that is, the drainage position is the lowest in the whole pipeline system, and the insulation of copper pipes and water pipes should be well used and wrapped ... >>
How to choose a good air conditioner
Basic points of purchasing air conditioners:
1. cooling capacity: the output power of air conditioner must be selected according to the room size to ensure the effect. The manufacturer's requirement is an average of 200 watts per square meter. For example, a room with a square meter of 18 needs 3600 watts of cooling capacity. You can buy a standard 3500-watt machine in the market, which is called 1.5 machine for short.
2. Energy efficiency ratio grade: the energy saving of air conditioner depends on the last number marked on the machine model. Energy efficiency ratio = refrigerating capacity/input power. For machines with the same refrigeration capacity, the old standard energy efficiency ratio before June this year was 1-5, which was 3.4 3.2 3.0 2.8 2.6, and the new standard after June was 1-3, which was 3.63.42. For example, the refrigerating capacity of a 1.5 horsepower machine is 3500 watts, and the power consumption of an 1 efficient machine is 3500/3.6=976 watts.
3. Variable frequency machine and constant speed machine: The working principle of variable frequency machine, the compressor always starts without stopping, and outputs different sizes of cold/heat through different rotating speeds. The constant speed machine continuously outputs cold/heat, and the temperature is controlled by starting and stopping the compressor. Therefore, the biggest feature of the inverter is silence, and there is no mechanical noise when the compressor starts and stops. Secondly, the temperature control can be accurate to 0.5 degrees, while the control range of the constant speed machine is 2 degrees, so the frequency converter is especially suitable for bedroom use.
4. Cooling/heating function: General air conditioners are used for cooling and heating, and the models are KFR and KFRD. If you don't need heating in winter, you can spend money to buy a water cooler, the model is KF-***, which is much cheaper.
5. Electric auxiliary heating: At present, all household air conditioners on the market are heat pump type. This air conditioner cools in heating mode. When the ambient temperature is lower than 5 degrees, the temperature of the external heat exchanger is frozen below zero, so it is necessary to stop the machine frequently for defrosting and cannot heat normally. Therefore, air conditioning is not suitable for heating in northern winter. In order to make up for this deficiency, many machines have electric auxiliary heating function. In fact, electric auxiliary heating is an independent electric heating device, which automatically starts when the external machine is stopped and defrosted to maintain the heating output of the air conditioner. This function is very practical in winter.
6. Compressor brand: At present, air conditioners, compressors and other major components are socialized and large-scale manufacturing, and each manufacturer may choose the components of the same supplier. Therefore, there is no situation that the brand of compressor determines the quality of the whole machine in the past. The quality of the first-line brand is guaranteed, and the compressor brand is irrelevant and does not need special attention.
7. Brand: There are two camps. The imported joint venture products are represented by Panasonic, mitsubishi electric and Samsung, with high price, good technology and high brand grade. The professional manufacturers of China products are Gree and Haier. Midea's sales have grown rapidly in recent years. Hisense mainly makes frequency converters, and Oaks and Chigo are positioned as commercial economy. The quality and performance of China products are not bad, and the cost performance is high.
8. If the set temperature of the air conditioner is reasonable, it can save electricity. The smaller the difference between the set temperature and the ambient temperature, the shorter the starting time of the compressor and the more energy saving. The most comfortable temperature of human body in medicine is 24 degrees, so the reasonable set temperature is generally 26 degrees in summer and 22 degrees in winter.
Four principles of air conditioning purchase
Look at the brand first. There are many air-conditioning brands on the market now, both at home and abroad, and most of them have their own unique advertisements, so it is difficult for consumers to choose. It is suggested that when purchasing air conditioners, choose products with strong enterprise strength, high brand awareness and perfect after-sales service. This is based on two considerations. The first is to ensure the implementation of after-sales service, because air conditioning is a household appliance and after-sales service is very important. According to the relevant national regulations, the compressor should be guaranteed for 3 years, and the competition in the home appliance market is almost fierce. Some manufacturers often have a short life cycle, and some collapse in three to five years. Enterprises lag behind the norms, and it is naturally difficult to implement their commitments. Greedy and cheap, buy products with weak enterprise strength and low brand awareness, and there will be endless troubles. Secondly, consider the quality, because the quality of air conditioners with strong enterprise strength and high brand awareness is relatively stable. Such enterprises not only have strong technical strength, but also pay special attention to quality, so the quality of such products is guaranteed.
The second is to choose a good business. After consumers choose the brand of air conditioner, they have to decide where to buy it. When buying an air conditioner, it is particularly important to choose a merchant. Because strictly speaking, the air conditioner is a semi-finished product, which can be used not after being bought from the store, but after being installed and debugged by a professional team. If you have installed ... >>
How to choose home air conditioner?
Hello, according to your question, I want to buy a cooling and heating air conditioner.
I have two recommended buying directions.
1: If you have two rooms, you can do it if the family space is more than 120 square meters. Considering the installation and purchase of central air conditioners, Japanese brands, such as Mitsubishi Heavy Industries, can be chosen. Their home central air conditioners have a good reputation and strong technology, and they are the first choice for home central air conditioners.
2. If the decoration is completed, the bedroom space in China will be 60 square meters with two bedrooms.
If you buy 2P-2.5P home wall-mounted air conditioners, generally speaking, 2P-2.5P air conditioners are suitable for rooms of 30-40 square meters.
If you choose a closet air conditioner, it will be more expensive at first, and then there will be some redundancy in performance, causing some waste.
To sum up, it is recommended to use wall-mounted air conditioners. As for the brand and price, for example, the new product mcv series launched by Mitsubishi Heavy Industries last year, as a variable frequency air conditioner, has excellent performance in power and energy saving. If the price is right, you can go to Suning.cn to check. The price of activities in different periods is different, depending on the actual situation.
Hope to help you, hope to adopt!
How to choose the size of air conditioner?
It should be determined according to the room area, sealing and thermal insulation conditions, floor, orientation, height, use and other factors.
For home use, the cooling capacity of air conditioner can be calculated according to the area size and sealing insulation. The cooling capacity of air conditioner is per square meter 160-220W, and the cooling capacity is 2500w W.
For example, an air conditioner with a cooling capacity of 2500w is suitable for a room of about 12 square meters;
1.25 air conditioner with a cooling capacity of 3200w is suitable for rooms of about 16 square meters;
1.5 air conditioner with refrigeration capacity of 3500w, suitable for rooms around 18 square meters;
Two 5000w air conditioners are suitable for a room of about 25 square meters.