The HettCube 200 by Hettich is an energy saving incubator that has a low impact on the immediate environment. The unit will not perform heating or cooling operations unless or until they are necessary as it combines the energy saving features of both natural and forced convection. At most operating temperatures the unit consumes only a fraction of a kWh of energy, thereby reducing operating costs, at times significantly. Stable temperatures and uniform heat distribution are the result of the unit's precise temperature control function. In addition, the incubator is quiet when in operation due to its novel ventilation and airflow system design. The HettCube incubators are available in 150, 310, and 520 litre sizes. The inner lining and stainless steel fittings are easy to clean, and loading and unloading can be a one-hand operation if necessary.