The third generation Eberspaecher Hydronic S3 Economy and Commercial Water Heater offers an increase in heat output efficiency and a compact design. With their wide range of outputs, the Hydronic S3 Economy and the Hydronic S3 Commercial featuring the 5.6 kW power variant are suitable for many different vehicles, from small delivery vans to heavy duty trucks. The pre-heaters can be controlled using the permanently installed and intuitive EasyStart Pro operating element. The timer function allows the required starting time and heating duration to be set in advance. The display and an LED color ring around the operating button indicate the current function status.