R513a Eco-friendly All-in-one Domestic Heat Pump Water Heater & Energy Saving Water Heating SolutionThe Hot Spring Series (American Market) All-in-One Heat Pump Water Heater uses eco-friendly R513a refrigerant, reaching up to 167℉. With 53gal, 66gal, and 79gal options, it features an enamel-lined tank, smart controller, low-noise operation, and wide temperature range, offering efficient and reliable hot water solutions for homes use. Features: 167℉ DHW Temperature 53gal, 66gal, and 79gal Water Tank User-friendly controller with LED display Vertical airflow design Enamel tank Low noise level : 40dB(A) at 1 meter 1. Control and Function User-friendly controller with LED display provides you a diverse range of operation modes and settings to ensure less energy consumption. 2. Vertical Airflow Design The vertical airflow design ensures enough space for heat exchange between external and the interior environment, which ma…