As the year comes to an end, many people find themselves relying on air conditioning—not just for cooling in the summer, but also for heating during the winter. While air conditioning is more commonly used for cooling, its use for heating has become increasingly common in recent years. More and more restaurants, offices, and even homes now use air conditioning to keep warm during colder months.
Most people are familiar with the ideal temperature setting for air conditioning in the summer—26°C or higher. But what about in the winter? What’s the best temperature to set your air conditioner when it's heating?
According to national regulations, air conditioning should not be set below 26°C in the summer and not above 20°C in the winter. This means that in summer, the air conditioner will only run if the set temperature is lower than the indoor temperature. In winter, the opposite applies: the air conditioner will only heat if the set temperature is higher than the current indoor temperature. Therefore, in winter, you can turn on the air conditioner when the indoor temperature drops below 20°C.
It’s important to note that these settings are based on the **indoor** temperature, not the outdoor one. So even if it’s freezing outside, your focus should be on keeping the inside comfortable without overdoing it. Also, windows should remain closed while the air conditioner is running to maintain efficiency and comfort.
The most suitable temperature for winter air conditioning is generally around **20°C**. Experts recommend keeping the indoor temperature between 16°C and 26°C, with 20°C being the optimal choice. Setting the temperature too high can cause discomfort, increase energy consumption, and put unnecessary strain on the system.
If you prefer a warmer environment, avoid setting the temperature to extreme levels like 30°C. Doing so can cause the air conditioner to cycle on and off frequently, which increases power usage and may even damage the compressor over time. A good rule of thumb is to keep the difference between indoor and outdoor temperatures within 6°C for better health and efficiency.
From an energy-saving perspective, lowering the temperature by just 2°C can save over 10% in energy use. So, while it’s important to stay warm, it’s equally important to be mindful of how much you’re using the air conditioner.
In addition to temperature settings, there are other things to consider when using air conditioning in winter:
- **Avoid setting the temperature too high**: A range of 25–26°C is usually sufficient.
- **Clean the unit before use**: Use a vacuum cleaner to remove dust from the indoor fan. Ventilate the room briefly before turning on the AC to reduce mold and bacteria buildup.
- **Use a moisturizing spray**: Apply a hydrating mist every two hours to keep your skin from drying out.
- **Ventilate regularly**: In small spaces (around 10m²), ventilate for about 15 minutes every two hours to keep the air fresh and reduce humidity loss.
- **Stay hydrated**: Drink water throughout the day, preferably in small amounts. Adding a bit of salt or honey to your water can help maintain hydration and balance body fluids.
While air conditioning is a convenient way to heat your home, it's not the most efficient or healthy method. It tends to dry out the air and doesn't provide the same level of warmth as a dedicated heating system. However, with proper settings and usage, air conditioning can still be a practical and effective solution for winter heating.
Setting your air conditioner to 20°C is not only cost-effective but also beneficial for your health. So next time you turn on the heater, remember: less is often more.
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