During periods of intense heat, people actively use air conditioners and coolers to alleviate discomfort. Central air conditioning systems (Central AC) are often installed in homes; while they provide coolness, they can increase electricity costs, which is a serious issue for many.
Searching for ways to save energy
In the search for ways to lower electricity bills despite using air conditioners, some homeowners resort to closing ventilation openings (louvers through which air is supplied) in rooms where no one is present. Many people assume that this approach will direct cool air only into occupied spaces, reducing the load on the air conditioner and consequently lowering the electricity bill.
How the air conditioning system works
Central air conditioning or HVAC systems are designed to meet the needs of the entire living space, and the volume of supplied air is predetermined. When a vent in a room is closed, the path of airflow is blocked, leading to increased pressure on the system. Since the air cannot exit freely, the air conditioner's operation increases, requiring greater effort from it. If vents are closed for an extended period, there is a risk of damaging ducts, fans, or other parts of the air conditioner, which could lead to significant repair costs.
Impact on electricity consumption and temperature
Despite the common belief that closing vents will reduce electricity consumption, experts argue that this is not necessarily the case. The air conditioner will still attempt to produce approximately the same amount of air, so the impact on the electricity bill will be minimal or nonexistent.
Furthermore, restricting ventilation in certain rooms can cause a temperature imbalance in different parts of the house: some areas may become too cold, while others remain warm, making it difficult to maintain a comfortable temperature throughout the home.
Energy-saving recommendations
This method is not an effective way to reduce air conditioning costs and save money. To decrease the operating costs of the air conditioner, it is recommended to perform regular maintenance on the system, keep air filters clean, and ensure that windows and doors are airtight. These measures will help save energy without creating excessive pressure on the air conditioner itself.
