The following are some tips for choosing to buy an old air conditioner that will help you with this: Choose an old air conditioner with a reputable brand Usually not everyone understands all the details of the air conditioner, so they may accidentally benefit. used to buy poor quality products of an unknown brand. Buyers need to be alert and choose carefully.
The air conditioner market today has many different brands such as: Panasonic air conditioner, LG air conditioner, Daikin air conditioner, Samsung air conditioner, Toshiba air conditioner … for you to choose.
But note that when choosing reputable brands, you should also read the place of production because now famous brands are manufactured and assembled in many different countries such as Vietnam, China, and Malaysia.
The brands that consumers use most widely today such as Panasonic air conditioners, Daikin air conditioners… all bring us products with the highest quality.
Choose an air conditioner based on the installation space
In case the room has an outside corridor or a household, you should choose to buy a wall-mounted machine (2 units), both to ensure aesthetics and convenient to repair. If you do not have a convenient outside space, you can choose to buy an old window-mounted air conditioner (1 unit) that is quite compact.
You should know how to calculate the capacity of the air conditioner according to the area of use to be able to achieve the highest efficiency while saving energy, avoiding the phenomenon of the air conditioner being overloaded.
Check the condition of the old air conditioner When buying a used air conditioner, we will be allowed to thoroughly check the current condition, even try it out if the seller asks.
At this point, you should note the following points:
- First, the case must be healthy, not protruding, concave or broken. If it is intact, then it is very likely that this is a good air conditioner, not heavily bumped due to transportation and heavy use. If they are still working properly then you should buy these models.
- You should also carefully check the copper pipes in both hot and cold units. If they are copper or copper brown, the tube is in good working order. When copper tube turns black, it should not be selected, because this type is old and can be punctured or have problems during operation.
- Meanwhile, if the copper pipe is re-welded, it is both difficult and less durable than the new one, but the cost is high. The two aluminum foils in the cooler must also be intact, the flat surface must not be punctured or serrated.
In addition, it is necessary to check the welds of the two gas pipelines connecting from the engine block to the outdoor unit.
Only choose a machine with a weld that has not been redone, usually with a uniform red color, seamless, smooth, sharp welds (if soldered again, it will often have a patchy color, the weld is not smooth).
Check the function buttons of the air conditioner
When buying used and used air conditioners, you also need to pay attention to check the operation function buttons of the air conditioner to make sure that all the cooling functions in the old air conditioner are still working well.
To test the cooling ability, you just need to turn on the air conditioner to operate in a closed room (of course, depending on the capacity of the air conditioner, you choose a closed room with an appropriate area for cooling), with a the temperature is about 25 degrees Celsius for about 10 minutes and feel the cold that the air conditioner gives off.
In addition, the fan speed adjustment function of the air conditioner, usually with 4 levels: strong fan, medium fan, small fan, and automatic fan. On the air conditioner control, there will be levels of wind blowing and you can customize the speed through them.
For testing, each wind speed you leave for a few minutes. If you can’t feel the difference, then the fan function of the air conditioner is definitely broken. Another function is also very important but often neglected, that is to adjust the direction of the air conditioner.
The test of adjusting the wind direction on the old air conditioner can be seen directly with the eyes, because when this function is turned on, the fan in front of the indoor unit will move left/right, up/down. If there is no difference in adjustment, the function may be broken.
By: Railway & PL
