A heater is an appliance designed to generate warmth and increase the temperature of an enclosed space, providing comfort during cold weather. It typically utilizes various heating elements, such as electric coils, infrared radiation, or combustion, to produce heat. Heaters come in different types, including electric heaters, gas heaters, and oil-filled radiators, each offering specific features and benefits. From portable options for personal use to larger units for heating entire rooms or buildings, heaters play a crucial role in maintaining comfort and warmth indoors when temperatures drop.