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Dwelling Design

High performance windows do not require heating equipment beneath the windows, thus leaving the whole floor for active use.
Short routing for installations is cost-efficient. When all technical installations locate in a compact layout routing becomes easy.

Spatial planning
Compact design decreases a house’s heating energy demand. Energy-saving technologies enable the main focus to be on user and owner requirements and other architectural demands. Trade-offs between different goals may become necessary. However, spatial planning and user requirements should guide the design.

Due to high insulation level of structures and windows and doors, traditional heating systems become unnecessary. Even in cold climate there is no need to place heating systems beneath the windows to prevent cold draft from cool window surfaces. For a dwelling unit design this relieves the whole floor area for active use.

A Passive House can utilize internal heat loads from kitchen equipment, washers, electronics, sauna etc. efficiently for winter time heating. Therefore it is beneficial to locate these heat sources at internal walls as much in the middle of the house as possible. Also heat losses from boilers or heat generators can be utilized in heating.

Installations
A Passive House can be heated with a ventilation heating system. Short and direct routing of air ducts is beneficial for the efficiency of the system. The space required for the ductwork needs to be taken into account in spatial planning. Here the architect should co-operate with HVAC designer, to receive accurate dimensions and space requirements for routing of ductwork.

Suspended ceilings of hallways, wardrobes, bathrooms, and utility rooms are appropriate spaces for routing of ductwork. Also internal floors or spaces above cabinets suit for routing. The ductwork should also locate underneath the air/vapour barrier of the roof. The terminal units may locate on internal walls, leaving the roof free of ventilation installations.