Water heaters with automatic mode

Smart (auto mode)

— the warranty period claimed by the manufacturer for the storage tank (see "Water heater type").

This parameter is important because, in terms of maintenance, the tank is the most difficult element: other parts of the water heater are relatively easy to repair and change, and in case of problems with the tank, it is often easier to replace the entire boiler. In the most advanced models, the tank warranty can be 10 years or more.