Like the Vaillant flexoTHERM heat pump, the flexoCOMPACT also bears the Green iQ label for especially sustainable, efficient and intelligently networked heating appliances. The heat pump can be combined with all regenerative heat sources and enables remote control by smartphone. The appliance has an integrated hot water storage tank that fulfils the EU Ecodesign Directive, its output is significantly greater than its predecessor models, and it needs no maintenance. In energetic terms the flexoCOMPACT already fulfils the requirements of the energy label A+++. In addition, the appliance is the quietest of its efficiency class.