The steel water heater undergoes chemical treatment which, combined with the special enameling method using vacuum technology, achieves perfect mechanical adhesion. Then the special enameling based on glass (DURO GLASS), the result of long-term research and testing by ELCO, is baked together with the steel at 860°C, achieving perfect thermochemical adhesion. Thus, the glass faithfully follows the contractions and expansions of the metal, having the same elasticity limits as it.

Result: The water heater is completely protected from rust.

ELCO DURO GLASS water heaters are equipped with not only a safety thermostat but also a special thermoelectric fuse, providing double protection against overheating.

The enhanced ecological polyurethane insulation with a thickness of at least 25mm & a density of 40krg/m3, injected using a special method applied by ELCO, covers every point of the water heater with absolute precision.

Result: Fewer thermal losses to the environment, saving energy, while the water stays hot for a longer time.