The steel water heater undergoes chemical treatment which, combined with the special enameling method using vacuum technology, achieves perfect mechanical adhesion. Then the special glass-based enameling (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.

The ELCO DURO GLASS water heaters are equipped not only with a safety thermostat but also with 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.