laminate trimmer
land reclamation
landfill gas
landscape shading
landscape windbreaks
landscaping
landscaping and microclimate
landscaping and regional climate
laser level
latent heat
lathe
lawn aerator
lead-acid battery
lead-acid battery maintenance
LEED (Leadership in Energy and Environmental Design)
light
light pipe
light shelf
light-emitting diode (LED)
lighting
lighting and daylighting
lighting controls
lighting design
lighting maintenance
lighting principles and terms
lighting replacement and energy efficiency
lighting timer control
LIGHTING TOPICS
lighting types
liquid collector
liquid-based active solar heating
lithium-sulfur battery
LiTraCon (light transmitting concrete)
locking pliers
log home
log home air leakage and thermal imaging
log splitter
loose fill insulation
low emissivity (low E) glass
low-flush toilet
low-pressure sodium lamp
lumen
luminaire
luminance
lux