Replacing Lamps and Fixtures
“Relamping” means substituting one light bulb for another to save energy. You can decide to make illumination higher or lower when relamping. But be sure that the new bulbs light output fits the tasks performed in the space and conforms to the fixture’s specifications.
Matching replacement bulbs to existing fixtures and ballasts can be challenging, especially with older fixtures. Buying new fixtures made for new lamps produces superior energy savings, reliability, and longevity compared with relamping.