This manual helps produce improved equipment sizing loads for single-family detached homes, small multi-unit structures, condominiums, town houses and manufactured homes. The text takes into account variables like fenestration loads for glass, latitude, altitude, curb construction, light shaft construction, and heat loss and gain for numerous wall and insulation options. Contractors, consulting engineers, and system designers can also apply the text to buildings featuring exceptional architectural features or lifestyle accessories such as solaria, atria, or walls with very large glass area.