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\par }{\insrsid8677199 
\par }\pard \ql \li0\ri-288\widctlpar\aspalpha\aspnum\faauto\adjustright\rin-288\lin0\itap0\pararsid13399715 {\insrsid13399715 Blower-Door-Test 1\tab                   Herbst 2007
\par 
\par 
\par Ob ein neues Haus luftdicht ist oder durch unentdeckte Lecks in der Geb\'e4udehaut unn\'f6tig W\'e4rme vergeudet, das l\'e4sst sich mit Hilfe des so  genannten Differenzdruck-Messverfahrens pr\'fcfen. Die Pr\'fc
fmethode, auch als Blower-Door-Test bezeichnet, bew\'e4hrt sich seit Jahren, wird aber, nach Ansicht von erfahrenen Bausachverst\'e4ndigen, immer noch viel zu selten zur Qualit\'e4tspr\'fcfung am Neubau eingesetzt. Beim Blower-Door-Test werden zun\'e4
chst s\'e4mtliche \'d6ffnungen des Hauses luftdicht verschlossen. Anschlie\'dfend wird ein Ventilator mit geeichter Leistung in der T\'fcr oder einem Fenster des zu pr\'fc
fenden Hauses eingebaut. Danach saugen die Messtechniker kontrolliert Luft aus oder blasen Luft in das Geb\'e4ude, um Energielecks zu finden. 
\par }{\insrsid13399715 
\par }{\insrsid13399715 
\par Foto: Verband Privater Bauherren (VPB)/Regionalb\'fcro Hannover}{\insrsid8677199 
\par }}