The installations described here exclusively concern new systems , selected and configured according to the type of premises and energy objectives: wall-mounted heat pumps , wall-mounted air conditioners , central heat pumps , central air conditioners , multi-zone systems , air-to-water systems , GVW/VTAC , as well as ventilation (air exchangers, humidity control, fresh air supply). These solutions are applicable to houses , multi-unit residential buildings , commercial spaces , and mixed-use buildings , with a selection process based on an analysis of building characteristics, usage patterns, and thermal loads, in order to achieve consistent operational and energy efficiency targets. • Capacity/load suitability • Architectural integration • Seasonal performance objectives • Operating constraints