MANUAL J RESIDENTIAL LOAD CALCULATION (8TH EDITION - FULL)MJ8 produces equipment sizing loads for single family detached homes, small multi unit structures, condominiums, townhouses and manufactured homes. Manual J8 provides detailed requirements for producing a residential load calculation per the CLF CLTD method. The provision of the standard apply to any dwelling unit that has its own heating cooling ventilating system and equipment, and its own exhaust air system(s). This includes: Single family detached