Say goodbye to high electricity bills and embrace green living! Grewo Energy Saving Pioneer 3HP air-to-water water heater adopts the industry-leading compressor refrigerant technology with an energy efficiency ratio of up to 4.0. Compared with traditional electric water heaters, it can save up to 75% of electricity bills throughout the year, allowing you to enjoy comfortable hot water while easily achieving energy conservation and environmental protection. Equipped with an intelligent constant temperature control system, precise temperature control, stable water output, and a comfortable bathing experience in all seasons.