Air conditioner is an appliance used to control the temperature, humidity, and ventilation of a room or building. It works by removing heat from the indoor air and transferring it outside, cooling the indoor environment in the process. Air conditioners are commonly used in homes, offices, and other indoor spaces to maintain a comfortable and controlled climate, especially during hot weather.

A refrigerator, often referred to as a fridge, is a household appliance designed to keep food and beverages cool and preserved. It operates by transferring heat from the inside to the outside, keeping the internal temperature lower than the ambient temperature. Refrigerators typically consist of a thermally insulated compartment and a heat pump that allows for the cooling process.

washing machine is a household appliance used for washing laundry, such as clothing and bedding. It automates the process of washing clothes by agitating them with water and detergent, removing dirt and stains, and then rinsing and spinning to remove excess water. Washing machines come in various types, including top-loading, front-loading, and compact models, offering different features and capacities to suit different needs and preferences.