They’re extremely energy efficient, making them the most economical light bulb in the long run, despite their higher upfront cost. LED bulbs tend to be the most expensive but last nine 9 to 22 years-up to 22 times as long as an incandescent bulb.They last up to 10 years and are more energy efficient than halogen and incandescent bulbs, but they’re not as efficient as LEDs. Compact fluorescent lamps (CFL) have a spiral shape and produce light by driving an electric current through a tube full of argon and mercury vapor.They use a moderate amount of electricity less than incandescents, but more than CFLs or LEDs. They’re low-priced but only last a year, at most. Halogen bulbs are generally shaped like a floodlight and have a heated filament that uses halogen gas to produce a bright light.These traditional bulbs are being phased out of production in favor of more energy-efficient versions. However, their short lifespan and higher energy use make incandescent bulbs a lesser deal in the long run. These bulbs last up to 1,000 hours (or one year), use the most energy, and have the lowest up-front cost. Incandescent bulbs produce light by running an electric current through a wire filament.There are four general bulb types used in outdoor wall lights, with a range of shapes, prices, lifespans, and energy usage: This coating extends the longevity and preserves the beauty of the light. The best outdoor wall lights have finishes (like powder coating) that seal the metal and help the fixture withstand rain, heat, or cold. Plastic is more affordable than metal but degrades in the elements over time.
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