If you don’t want to be “backstabbed” by your air conditioner, in addition to looking at the capacity before buying an air conditioner, you should also pay attention to this parameter!

As the summer heat arrives, all regions are entering high temperature mode. It is no exaggeration to say that air conditioners are life-saving tools in summer. However, old air conditioners waste electricity and do not provide cooling. I want to replace them with new ones, but I don’t know how to choose…

This issue mainly focuses on wall-mounted air conditioners, but the relevant principles also apply to cabinet air conditioners. If you want to choose an air conditioner that saves you time, energy, and money, be sure to read to the end.

Want better cooling effect? ​​Choose a larger capacity instead of a smaller one!

Air conditioner capacity used to refer to input power, but now refers to cooling capacity, that is, cooling capacity. Different cooling capacities have different applicable areas , and it is generally estimated based on 150-220W cooling capacity per square meter.

Professor V compiled a simple comparison table:

Note: "Pie" is actually an approximate numerical range, and the figure above takes the middle value. The smaller value is generally called a small Pie.

Tips to improve cooling effect:

(1) If you are unsure about the air conditioning capacity, it is recommended to choose a larger one rather than a smaller one. If the room is too large and the air conditioning capacity is too small, it may result in insufficient cooling capacity and poor cooling effect.

When purchasing, you should also pay attention to the principle of moderation. Too large a horsepower means increased energy consumption, which wastes electricity and money!

(2) For rooms on the top floor or facing west , when calculating the number of units, an additional 3 to 5 square meters can be added to the actual area;

(3) For rooms with a ceiling height of more than 2.8 meters , the selected number of units can be appropriately increased.

Want to save electricity? Look carefully at the energy efficiency labels!

Energy efficiency labels are labels attached to energy-consuming products that display product energy efficiency levels and other performance indicators. The smaller the energy efficiency level number on the same label, the lower the energy consumption. In comparison, level 1 is more energy-efficient , and level 5 means that the product has just reached the market access indicator.

In 2020, GB 21455-2019 "Limited Values ​​of Energy Efficiency and Energy Efficiency Grades for Room Air Conditioner Regulators" was officially implemented. The new standard combines the old energy efficiency standards for fixed-frequency and variable-frequency air conditioners into one, and the energy efficiency grades are increased from 3 levels to 5 levels.

Tips for saving power:

If you have enough budget, try to choose the new level 1 energy efficiency . If the product only promotes/highlights the new energy efficiency, it may only represent the third level of the new energy efficiency, not the first level.

Want to be comfortable in an air-conditioned room? Here are some tips!

1. Don’t want to be hot and cold? Inverter air conditioner is the first choice

Fixed frequency means that the compressor speed cannot be changed, and the temperature can only be controlled by starting or stopping the compressor. Variable frequency means that the temperature is controlled by changing the compressor speed .

Professor V compared the experience of using the two for your reference:

In general, variable frequency air conditioners provide a better user experience.

2. More functions to meet different needs

With the development of technology and the improvement of people's living standards, in order to make users more comfortable and worry-free, air-conditioning products have added some humanized designs in addition to essential functions such as fast cooling/heating. You can buy them as needed~

Tips for peace of mind and comfort:

(1) Is it easy to catch a cold when being blown directly by cold wind? The windless/anti-direct blowing function is recommended for families with children, the elderly or pregnant women.

(2) Do you feel dizzy and stuffy after staying in an air-conditioned room for a long time? The fresh air function can exchange indoor and outdoor air to keep the air fresh and flowing . It is recommended for people who need periodic air circulation.

(3) Feeling too stuffy during the rainy season? The dehumidification function can keep the air in the room fresh and dry. It is especially recommended for friends in the eastern region and Guangdong.

The dehumidification function is applicable in limited situations and is generally suitable for use during the rainy season when the temperature does not exceed 30°C. Turning on the "dehumidification" mode in hot weather will cause the compressor to start and stop frequently, which not only wastes electricity, but also wastes air conditioning!

(4) Is cleaning troublesome? Choose the self-cleaning function and let the air conditioner take a bath regularly! Deep cleaning of the whole machine still needs manual work~

(5) Do you always forget to turn off the air conditioner and have to go back home? Is there too many buttons on the remote control and your parents don’t know how to adjust it? With the smart networking function , you can control the air conditioner from any distance!