HVAC system

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An HVAC system is a heating , ventilation , air conditioning and refrigeration system (see also supply technology ). Systems of these technologies are grouped under the collective term HVAC system, because a system can combine and fulfill several of these functions.

The names HLKK and HLK are common in Switzerland. In Germany, such planning services are less often referred to as HVAC ( heating, ventilation, air conditioning ), but rather as HLS ( heating, ventilation, sanitary ) or TGA ( technical building equipment ). The associated trades are often grouped under HVAC ( heating, air conditioning / cooling, ventilation ), HLS ( heating, ventilation, sanitary ) or SHK ( sanitary, heating, air conditioning ).


  • Ulrich Brinkmann: Significantly increase efficiency. Energetic optimization of an HVAC system . Article from: Gebäude-Energieberater GEB, Vol. 8 No. 5 2012, pp. 40–43, ISSN  1861-115X .

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