Light Emitting Diode (LED) light bulbs are the newest technology in lighting, and are replacing fluorescent lamps as the standard in energy-efficient lighting. Compact fluorescent lamps contain a very small amount of mercury. As electricity flows through the gas in the tube, a phosphor coating on the inside of the tube emits light.ĬFLs require a ballast to regulate the current flowing through them which is either attached to the lamp itself (self-ballasted) or integrated into a dedicated fixture. They use a gas-filled tube that is twisted or folded in a compact way that allows it to be as long as possible while taking up the same space as a standard light bulb. Halogen lamps burn brighter (and hotter), and last longer than traditional incandescent bulbs.Ĭompact Fluorescent Lamps (CFL) are a very energy-efficient alternative to incandescent lamps. The difference is that the filament inside the lamp is enclosed in a small quartz capsule which contains a halogen gas. Halogen light bulbs are a type of incandescent lamp. On average only 10% of the energy they consume is converted to light, with the remaining 90% being converted to heat. Incandescent aka traditional light bulbs are the oldest and least efficient technology.Įlectrical current passes through a tiny wire (filament) causing it get hot and glow. The four light bulb types used in residential recessed lighting are incandescent, halogen, compact fluorescent (CFL), and light emitting diode (LED). Light bulbs are categorized by the following: Type That being said, light bulb is more commonly used and I use both terms interchangeably. Note: It’s worth mentioning that technically the correct term for a light bulb is a lamp. I’ve also included recommendations and a light bulb comparison chart that’s organized by fixture size and bulb type. This post will explain how light bulbs are categorized and the differences between them. The type of light bulbs that you install in recessed lighting plays a major role in achieving your desired results.
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