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[FastCompany] This clever radiator hack can make your 100-year-old heating system more efficient
[FastCompany] This clever radiator hack can make your 100-year-old heating system more efficient

Inside an 80-year-old apartment complex in Brooklyn, the steam heat system had always been chronically uncomfortable in the winter. Apartments on the top floors could be 90 degrees even with the windows open on a cold January day; apartments on the lower levels were never quite warm enough.