Life Tips 24/06/2025 13:48

Should you direct your AC's airflow up or down for better cooling? An expert's answer might surprise you

Many of us have been using air conditioners for years, yet few can confidently answer this simple question: Are we truly using them correctly? Despite their widespread use, there are still key details about air conditioner maintenance and usage that often
As summer arrives, air conditioners are being used continuously by families at high capacities. In addition to adjusting the temperature, wind speed, and selecting the appropriate modes for efficient operation, the direction of airflow is also a crucial factor.
Many people assume that setting the airflow direction downwards to blow directly at them provides the most cooling. However, according to experts with extensive experience in the electronics and refrigeration fields, this is not always the best approach.
Experts provide insights:
The National Program on Energy Saving and Efficiency (VNEEP) explains that adjusting the air conditioner's airflow downwards or to a height level suitable for the human body will only allow the user to feel the cooling effect more quickly. In this case, the air conditioner can only cool the specific area where the air is directed.
However, in the overall context of the room or home, the air conditioner will not perform its optimal cooling function. It will take more time and energy to cool the entire space, and areas not directly in the airflow path will experience little to no cooling effect. This results in higher energy consumption.
"This is based on the fundamental principle of air expansion: warm air is lighter than cold air, and it accumulates at the top. In contrast, cold air is heavier, so it tends to fall downward. Therefore, directing the airflow downward causes the device to take longer to cool the entire space," explains an expert from VNEEP.
Additionally, having cold air blowing directly onto the body continuously can negatively impact health, potentially causing issues like sneezing, a runny nose, headaches, dizziness, and more. This is especially true for children, the elderly, or individuals with weakened immune systems.
For these reasons, when using the air conditioner, it is recommended to adjust the airflow upwards, not excessively high but at a moderate angle. This allows the cool air to be distributed more evenly throughout the space, improving cooling efficiency, reducing cooling time, and ensuring a more optimal temperature.
Thus, adjusting the airflow direction not only helps cool the space more effectively but can also assist in energy savings, which in turn reduces electricity costs for users.
Additional advice on adjusting fan speed when using the air conditioner:
In addition to the airflow direction, the fan speed also plays a significant role in the air conditioner's efficiency and energy conservation. Typically, air conditioners come with 3-4 fan speed levels, ranging from low to high, indicated by "Fan" or "Fan Speed" on the remote control. Users can adjust this based on their personal needs.

News in the same category

Brown versus white eggs: Which is better? The answer surprises many

Brown versus white eggs: Which is better? The answer surprises many

Eggs come in two popular colors: white and brown. Both are widely available at markets, supermarkets, and stores. But when it comes to nutrition and taste, which one truly stands out? Let’s explore the differences and uncover which egg is the healthier

24/06/2025 15:52

News Post