A heat pump is a device that transfers heat from one place to another, making it useful for both heating and cooling spaces. In the winter, it extracts heat from the outside air or ground and brings it indoors, while in the summer, it does the opposite by removing heat from inside your home and releasing it outside. This process is energy-efficient, often using less electricity than traditional heating systems. Heat pumps can be powered by electricity and are considered environmentally friendly because they can reduce greenhouse gas emissions. They come in various types, including air-source, ground-source, and water-source heat pumps, each suited for different climates and applications.