Wärmepumpen are devices that transfer heat from one place to another, often used for heating buildings or providing hot water. They work by extracting heat from the air, ground, or water and moving it indoors, even in cold weather. This process is energy-efficient, as it can produce more heat energy than the electrical energy it consumes. There are different types of Wärmepumpen, including air-source, ground-source, and water-source models. Each type has its own advantages and is suitable for various climates and applications. Overall, Wärmepumpen are an environmentally friendly alternative to traditional heating systems.