The GEA Denco T-Range and the GEA Denco E-Range precision climate-control units are especially designed for applications in sensitive areas such as telecommunications, chip factories, and computer centres: i.e., for all operations in which constant temperature, humidity, and air quality are essential. These two ranges operate with great energy efficiency and environmental harmony. Models such as those with variable air volume-flow control or with freecooling efficiently enable demand-driven and energy-saving applications.

The GEA Denco TW models are T-Range units in weatherproof versions for applications outdoors. The GEA Denco MS-Range was developed especially for retrofit projects, and is available only in small cooling ranges. The cooling-capacity classes DX A and DX X involve the use of units with direct evaporation and an air-cooled condenser. DX W and DX F, on the other hand, operate with direct evaporation and with a water-cooled condenser. The C-models (C=Chilled water) operate with an external chiller.