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Heizen in Stuttgart: Seltener „kältester Tag“ macht Wärmepumpen teils um Tausende Euro teurer
In Stuttgart tritt der statistisch kälteste Tag fast nie auf. Aus Sorge, ein paar Stunden im Jahr zu frieren, installieren Verbraucher oft zu große und damit teurere Wärmepumpen.

Aus Angst vor seltenen kältesten Tagen fallen Wärmepumpen tendenziell größer aus als sie müssten, sagen Experten.
Imago/Christian Ohde