Boiler: Choose Vaillant VC ecoTEC Pro 186/5 or Vaillant VC 20CS/1-5 for higher capacity and better performance for 180m².
Controller: Vaillant VRC sensoCOMFORT 720 will help optimize temperature adjustment according to weather and usage needs.
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Before deciding, consult an expert to ensure the best choice for your family's specific needs and conditions.