Leave Aircon On All Day? Energy Efficient Comfort in Singapore

Many homeowners in Singapore wonder whether it is better to leave the aircon running on low the entire day or switch it off when leaving the house. Some believe that keeping the aircon running uses less electricity, saves energy, and improves their machine's lifespan. Others think turning it off completely is more efficient. The answer depends on how long you are away and how your aircon system works. ## How Aircon Cooling Actually Works An air conditioner works by removing heat from the room. When you switch it on after the room becomes warm, the system must work harder at the beginning to cool the space down. Once the room reaches the set temperature, an **inverter** compressor cycles seamlessly to maintain that temperature. This means the aircon does **not run at full power the entire time**. ## Leaving Aircon On All Day If the aircon runs the whole day while nobody is home, it will keep maintaining the room temperature. This means the compressor will continue cycling throughout the day and electricity is still being consumed. Over many hours, this can add up to **higher electricity usage**. ## Turning Aircon Off When You Leave If you turn the aircon off when leaving the house, the room temperature will rise. When you return, the aircon will work harder for a short period to achieve your target climate. However, this short burst of higher energy usage is **usually less than running the aircon continuously for many hours**. ## Keeping Energy Bills Low with High NEA Tick Ratings Choosing an aircon with a 5-tick system on the **NEA** **label** gives you massive **savings** over old models. These high-**ticks** units provide unparalleled **energy** efficiency. - For most households, the better approach is: - Turn off the aircon when leaving for several hours - Turn it on about 10 to 15 minutes before using the room again - Keep doors and windows closed to maintain cooling - Use a moderate temperature such as **24°C to 25°C** Regular servicing keeps the system efficient. If your aircon blows out warm air or is **not cold**, contact **Sky Blue Aircon Engineering Pte Ltd**.