The Vaillant Package 4.37 aroTHERM plus is a state-of-the-art heat pump designed for efficient heating and domestic hot water preparation in residential buildings. It utilises renewable energy sources and thus contributes to reducing CO2 emissions. With a maximum temperature range of 63 °C, it is able to guarantee a reliable heat supply even at colder outside temperatures. The compact design allows for flexible installation, while the robust construction ensures durability and reliability. The heat pump is also equipped with IP25 protection, which protects it from dust and splash water. These features make the Vaillant Package 4.37 an ideal choice for environmentally conscious users who value efficiency and sustainability.