On a visit to the construction site for the renovation of the NoVo Foundation in Brooklyn on a hot day last summer, the interior of the building was pleasantly cool, even though the mechanical systems were not yet operating. The high levels of insulation added to the walls enclosing the 1920s concrete-framed structure had kept the heat out.
On a return visit in February, the now-completed headquarters for the not-for-profit was agreeably warm inside, in spite of outdoor temperatures in the low 30s. No chill could be felt near the monumental triple-glazed street-facing windows. The warmth came not from a boiler, but from the heat generated by people, lights, and appliances. It was harvested from the ventilation exhaust and redistributed.
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