On sweltering summer days, your air conditioner becomes your best friend, providing a cool and comfortable haven from the scorching heat outside. However, many people inadvertently sabotage their AC's effectiveness and efficiency by leaving windows open while running. This article will explore why this practice is counterproductive and why you should never keep the windows open while the AC is on. 1. Energy Efficiency Takes a Hit: Open windows allow hot outdoor air to flood your home, making your air conditioner's job infinitely more challenging. Your AC has to work overtime to counteract this influx of heat, resulting in increased energy consumption and higher utility bills. 2. Humidity Becomes a Foe: Air conditioners not only cool but also dehumidify the indoor air. When windows are open, the humidity from the outside air enters, forcing your AC to work extra hard to maintain a comfortable humidity level. This can lead to discomfort and potential moisture-related issues like