thermos 200/300 DC PASSIV HAUS COMPLIANT MECHANICAL VENTILATION HEAT RECOVERY UNIT     COMPONENT    suitable for   PASSIVE  HOUSES Dr. Wolfgang Feist        Heat recovery: 3)   Heat recovery rate  (effective): 92 % 1) 2) Electric efficiency: 0.36 Wh/m³ 1) results may vary according to the test methods used, e. g. with      or without condensation 2)  best efficiencies in the German market today 3) certificate refers to thermos 200 DC   product information   technical data   Certificate Component suitable for Passive Houses        thermos 200 DC