Der größte Stromfresser im Eigenheim ist häufig die veraltete Heizungspumpe. Ein Austausch ist daher nicht nur gut für die Umwelt, sondern auch für die Haushaltskasse. Viele wissen inzwischen, dass eine alte Heizung deutlich mehr Energie zur Wärmeerzeugung benötigt als eine neue Anlage. Doch nicht nur höherer Brennstoffverbrauch treibt die Kosten in die Höhe: Auch veraltete Umwälzpumpen sind teuer, da sie Unmengen an Strom fressen. Der direkte Vergleich mit anderen Haushaltsgeräten am Beispiel eines durchschnittlichen Einfamilienhauses zeigt: Während die jährlichen Stromkosten für Fernseher (55 Euro) und Waschmaschine (57 Euro) relativ gering sind, verbrauchen Kühlschrank und Beleuchtung (je
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