"Projects located in mild climates (fewer than 4,500 infiltration degree-days) can earn this point by simply putting in a ventilation system." change to "Projects located in mild climates (fewer than 4,500 infiltration degree-days) can earn this point by simply putting in a ventilation system. These exemptions are based on ASHRAE Std. 62.2-2004, which references ASHRAE Std. 119-1988 (RA 2004). Following this standard, LEED for Homes uses a base of 65