Ariston Nuos Plus S2 FS is a heat pump water heater for villas, available in 200 and 250 litre capacities. Its technology uses ambient air to heat water, saving up to 80% energy versus standard electric and solar water heaters. A titanium active anode, instead of magnesium, ensures longterm reliability without maintenance need. The product is wifi connected, Ariston Net app allow remote control, energy monitoring and telediagnosis.