According to the U.S. Energy Information Administration, space heating accounted for about 32% of energy use for all U.S. commercial buildings in 2018, followed by ventilation and lighting, each at about 10%1. Space heating is the largest single energy end use in U.S. office buildings as well2.
Use of energy in commercial buildings - U.S. Energy Information Administration (EIA)1
DataTrends: Energy Use in Office Buildings | ENERGY STAR2
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