Summer in the Bronx can bring hot and humid days. When the temperature rises, your air conditioner may run for many hours. This can make your apartment comfortable, but it can also raise your electricity bill. The good news is that simple changes can help you stay cool while using less energy. Apartment size, sunlight, insulation, and daily AC habits all affect how much power you use. Choosing an efficient cooling unit can also make a difference. For people looking for a u sh