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