Klaus utilizes state-of-the-art machinery, molds, and welding equipment in the production of hot water tanks. The Klaus stainless steel water storage tank provides hygienic hot water supply.

The boiler body and heat exchanger coil are made of stainless steel and are available in single or double coil versions. The lower coil connects to the solar energy system, while the upper coil connects to the hot water boiler. During periods of low sunlight, the upper coil heats the domestic water.

Excellent insulation minimizes heat loss. Boilers up to 500 liters feature polyurethane insulation.

All products carry an energy efficiency label. Every hot water tank undergoes a 13-bar leak test. For boilers above 500 liters, removable soft foam insulation is applied.