Compact Fluorescent Bulbs (CFLs) are energy-efficient lighting options that use a gas-filled tube to produce light. They consume about 70% less energy than traditional incandescent bulbs and can last up to 10 times longer, making them a popular choice for both homes and businesses. CFLs come in various shapes and sizes, fitting standard light fixtures. They emit less heat than incandescent bulbs, which helps reduce cooling costs in warmer months. However, they contain a small amount of mercury, so proper disposal is important to minimize environmental impact.