In the Alde Compact 3030/4000 D Plus you have unlimited hot water, as long as there is water in the fresh water tank.
The standard Alde Compact 3030/4000 D has a hot water tank with a volume of about 10 litres of hot water at >50°C. When the hot water is mixed with cold water (approx. 10 °C) to the normal user temperature of approx. 38 °C, this results in approx. 12 litres of hot water every 30 minutes.
The colder the water, the longer it takes to heat up. If 230 V electric cartridge is used instead of gas/diesel, the capacity is slightly reduced. The “extra hot water” function on the Alde control panel raises the water temperature to > 65°C for 30 minutes. This means ≈ 15 litres of heated water, mixed and ready.