Heat flow Sankey diagrams visualize the energy model data from two versions of the same house. The first is modelled to the Nation Building Code of Canada and the second is modelled using our Passive House assemblies and details. The code-built version of the same house would see more than 2.5 times the annual heat flow of the PH certified home of same design. Â This shows how PH principles drastically reduce the requirement for mechanical heating, allowing the sun and everyday activities like cooking, working on a computer, or watching TV, to provide more than 50% of the heating load for the house. By drastically reducing heat flow through the system, you can heat your home less to maintain the same overall level of comfort!











