Vaillant's aroTHERM plus is a monobloc heat pump with natural R290 refrigerant, with a very low environmental impact (GWP 0.02), well ahead of the F-Gas directive. It guarantees energy class A+++ and a delivery temperature of up to 75 °C, making it ideal for both new buildings and renovations. It can be installed individually or with uniTOWER plus modules (190 L boiler) or VWZ MEH 97/6 for boilers over 200 L, does not require an F-Gas license, and can be installed in a single day. Quiet (28 dB(A) at 3 m), remotely controllable via the sensoNET app, it ensures plenty of hot water and an anti-legionella cycle without an electric resistance. Designed to last over 15 years, it is corrosion resistant thanks to BlueFin treatment and self-cleaning paint, also suitable for coastal areas.