One of the household appliances that typically uses the most amount of energy is the air conditioner or heating, ventilation, and air conditioning (HVAC) system. Air conditioners consume a significant amount of electricity, especially when running for extended periods or in hot climates. Other energy-intensive appliances include refrigerators and freezers, electric water heaters, clothes dryers, and electric ovens or stoves. However, the actual energy consumption can vary depending on factors such as the appliance's efficiency, usage patterns, and energy-saving features.