Simple interior or exterior light fixtures or sconces usually cost between $7 and $35. Ceiling fans generally cost any where between $7 to $50 depending upon high they are mounted and whether or not they have light kits. We even clean Chihuly chandeliers!

luminaire, Complete lighting unit, consisting of one or more lamps (bulbs or tubes that emit light), along with the socket and other parts that hold the lamp in place and protect it, wiring that connects the lamp to a power source, and a reflector that helps direct and distribute the light.

For stuck-on grime, you can lightly moisten your microfiber cloth with a mixture of water and a few drops of dishwashing liquid. Put your crystals or globes back into place, and restore power to the light fixture.

In technical language, the term refers to the actual light source. To help you remember the meaning, a simple mnemonic will help you. The incandescent lamp, colloquially known as a light bulb, already has the word "lamp" in its name. In contrast, a luminaire is the construction around the light source.