Determine whether the underlined portion of the sentence is correct or whether it needs to be revised.
F̲o̲r̲ ̲h̲o̲m̲e̲s̲ ̲i̲n̲ ̲t̲y̲p̲i̲c̲a̲l̲l̲y̲ ̲c̲o̲l̲d̲e̲r̲ ̲g̲e̲o̲g̲r̲a̲p̲h̲i̲c̲ ̲r̲e̲g̲i̲o̲n̲s̲, it is particularly important to have effective and efficient heating systems.