Underfloor insulation
Thermal resistance below living areas.
Yield curve tracking
Solar performance monitoring.
Yield (energy)
Output from solar over time (kWh).
Yellow-label wood
CE-certified timber.
Year-round comfort
Stable temperatures through insulation and HVAC.
Yard infiltration
Natural drainage into green areas.
Utility room
Designated space for washing and storage.
User interface
pps or displays to manage building systems.
Urban heat island
Higher urban temperatures due to materials.
U-value
Measure of heat flow through a material; lower = better.