The Ariston Nuos Primo HC A+ delivers superb performance with energy class A efficiency, using eco-friendly R134a refrigerant. Designed for ease of installation (monobloc, plug‑and‑play), it heats water up to 55 °C in heat‑pump mode (or 75 °C with electric backup), ideal for family use in cold climates (operational down to –5 °C). With slim design and integrated LCD control panel featuring Green, Auto, Boost, and Anti‑legionella modes, it's a durable and eco‑conscious choice for modern homes.