Part H1 Structure Part H2 Damp and weatherproofing Part H3 Fire safety Part H4 Health and amenity Part H5 Safe movement and access Part H6 Energy efficiency Part H7 Ancillary provisions and additional construction requirements Part H8 Livable housing designSA Part H9 Water efficiencySA Part H10 Access for people with a disabilityWA Part H9 Water useSpecification 42 House energy rating softwareSpecification 44 Calculation of heating load limit, cooling load limit and thermal energy load limit