homes table 2 | U.S. Green Building Council
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homes table 2

Requirement

ASHRAE 90.1–2007

ASHRAE 90.1–2010

Economizer exemptions

Table 6.3.2

Only for unitary equipment, EER/SEER rating

For all HVAC system types, must meet % efficiency improvement, now required in most climate zones

Lighting power density

9.2.1

NA

Reduced, average 17% in space types, more for retail display lighting