The heat exchanger used for Quick "Nautic Boiler” is in stainless steel AISI 316. The heat exchange capacity is notably higher than that achieved from other manufacturers. The tank is made in stainless steel 316 AISI welded with Argon shielding gas and hence highly resistant to corrosive agents. The electrical heating element is made of incoloy®steel. The thermal insulation is high density polyurethane foam injected between the cover and tank giving excellent heat retention properties. Serbatoio in acciaio inox Aisi 316