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Due to the safety concerns, inefficiency, and expense, the popularity of neon signage has waned over the years in favor of incandescent and LED signs. LED is now the primary source of lighting in illuminated signage as it is the most efficient. Manufacturers also use LED in faux-neon signs and design elements.
Cons to Neon lighting for signs:
They output very little light for amount of power required.
Limited colors available based on gas and glass color configurations.
The glass tubes can be fragile.
Generally only one color can be used at a time.
Very high maintenance costs.
One small crack and the entire piece is broken.