Our universal, customiseable basic devices in addition with the disposable, comprehensive accessories programme, are offering you a technically optimized and economic solution for your specific heating challenge. We can even offer you special-parts within a short time , due to our flexible sheet metal forming production. 

Heating of industrial buildings require in comparison relatively high energy consumption. According to physical laws, without heat recirculation systems, heat goes up - independently from what kind of heat generation is used for the heating of the industrial building. 

Trendsetting technology with novel combustor and recuperator geometry for the energy-saving heating and aeration of industry halls, craft halls, tents, construction site heating and drying. 

Doll hot water-register air heaters of the type-series WDA (Warmwater-Doll-Automatic) have been approved for application in commercially used rooms of all kinds, most notably also in very high rooms. 

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The devices are easily transportable by the serially equipped carrying handles. With the utilisation of wall brackets from the accessory programme, these devices are also optimally applicable as stationary units. 

Doll climate central devices are suited for heating, aeration and partial air-conditioning of garages, industrial halls, stores, offices and administrative buildings. 

Whatever the required solution is - the supplying of process heat for example by desiccation processes of the drying-chamber-procedure, or high-temperature devices for process engineering or specially designed combustion chambers/ recuperators: We are offering you the corresponding solutions for your requirement. 

Doll mobile vented dryers extract humidity from the compartment air by constantly circulating compartment air through the device. In the process the humid air flows over the cold evaporator tubes, whereupon it is chilled below the dew point. 

We are manufacturing mobile devices and devices in container/trailer-type design specifically constructed for different kinds of armed forces customized to their operating conditions and needs. 

For the heating of tents we are manufacturing mobile devices as well as devices in container-/trailer- design in each case in combination with a specifically matched set of tent-heating accessories, as there are Doll- blow-out towers (utility patent / patent), specially designed hot-air tubes and also ceiling-ventilators for air-recirculation to the floor area. 

Heating of industrial buildings require in comparison relatively high energy consumption. According to physical laws, without heat recirculation systems, heat goes up - independently from what kind of heat generation is used for the heating of the industrial building. 

Trendsetting technology with novel combustor and recuperator geometry for the energy-saving heating and aeration of industry halls, craft halls, tents, construction site heating and drying. 

Heat recovery in winter and exhaust air operation in summer. Saving energy in winter and freshness in summer.