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Table 1: Comparison of energy and staff costs for North American offices
CostsRosenfeldAbdou and LorschEPAWoods BOMA
Staff costs ($/ft2/y)300218200237130
HVAC running costs ($/ft2/y)–2-10612 2.9
Energy costs ($/ft2/y)1.501.00-2.002.002.00 1.50
Ratio of staff costs to energy costs2001214-218100118 87
Productivity offset of energy (%)0·50·5-0·91·00·91·2
Prodcutivity offset (min/day per person)2·252-3·754?– 5Ìý