The temperature varies throughout the year, spring, summer, autumn and winter. Leng Xia fever in winter is eternal, and air conditioning has become a necessity for us all summer. It can provide us with great help in various fields. Because sometimes air conditioners are expensive, we can't afford them. At this time, second-hand air conditioners can alleviate our economic pressure. Then, before buying second-hand air conditioners, we need to tell you that it is difficult to distinguish good from bad without a certain professional level.

Attention method

First: look at the brand. According to domestic brands, choose in the order of Gree, Midea, Haier, Kelon and Changhong.

Second: check whether the appearance is damaged, whether the copper tube is folded, and look at your favorite air conditioner. Don't bargain with the boss in a hurry. Just wait for the boss to sell you a good price, ask more about the prices of other air conditioners, and finally read the following items and finally bargain.

Third: look at the date of production, and see which year the air conditioner is. Generally speaking, the fewer years, the better. If you can't find the production date of the air conditioner, or the production date is only deducted, then I can tell you that this air conditioner has a history of at least three to five years. Generally, air-conditioning shops for two or three years will not tear them or dig them out on purpose. He is eager to show off so that he can get a good price.

Fourth: If there is an opportunity, I happen to meet some air conditioners that were being used by some units and entertainment places when the demolition was carried out. Although the air conditioner is a bit bitter, most of it is absolutely easy to use and the refrigeration is not good. How do people and guests at work manage their business when they come to your home? Fifth, it is best not to repair the compressor, and most people may not see it. Look at the shell to see if the shell is deformed and there are several screws, but there are new screws, which are obviously different from most original screws. If yes, then this air conditioner must have been repaired, and a few screws on the outer cover of the air conditioner will fall off or be less installed after repair. The same is true for us to repair the air conditioner.

Sixth: If you have the conditions, please ask the boss to turn it on and find an air conditioner that can quickly start the refrigeration or heating compressor, and the performance will be relatively better.

Seventh, choose the second-hand air conditioner with complete appearance and no rust, many fins not knocked down, no fault in the internal air deflector and no welding trace in the pipeline.

Eighth: Ask the boss to test the current, and try to choose the one whose test current is close to the rated current data.

Ninth: Try to buy window-type second-hand air conditioners. Because there are too many problems caused by the disassembly and assembly of split air conditioners, and it is not easy to test them on the spot when choosing the machine.

Tenth: listen to the voice after remote control at the scene and choose a compressor with no noise and low noise.

Other methods

How to buy second-hand air conditioners? (1) Check whether the appearance is intact and tidy. Check whether the shell is cracked or deformed, whether the condenser fins are arranged neatly and whether the gap is uniform. If the gap is too large, it will affect the cooling capacity, and if the gap is too small, it will easily accumulate dust. It also depends on whether the fins and copper tubes are closely attached, otherwise, if they are loose, the heat exchange efficiency will be affected and the efficiency will be reduced. Use effect. ? (2) The window machine, cabinet machine and wire splitting machine should be complete sets, and the indoor outdoor machine and even the connecting copper tube should be original. Generally speaking, the solder joints of original fittings are smooth and uniform. ? (3) Listen to whether the sound of the indoor unit is brisk, stable and even. If there is regular or irregular noise, there is a problem with the balance of indoor fans. At this time, touching the chassis will make you feel wobbly. ? ④ Look at the actual cooling effect. The cooling operation lasts for 10 minute, and the thermometer is put in the air outlet for testing. The temperature is generally 18 ~ 20 degrees, and the lower the temperature, the better the cooling effect.

With the deterioration of air quality and environmental pollution, the greenhouse effect is becoming more and more serious, which intensifies the summer heat. In hot summer, fans can no longer provide us with a cool and comfortable environment. Sometimes because of the high price of air conditioners, we prefer to choose second-hand air conditioners, but sometimes second-hand air conditioners will be bad if they are not properly selected. If you have a friend who does air conditioning maintenance, take him with you, and the probability of choosing a second-hand air conditioner will be much smaller, or you can also participate in it.

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