Is it bad to leave neon signs on?

Leaving Neon Lights On — Myths, Facts, and Best Practices

Neon signs are iconic for their warm glow, eye-catching colors, and ability to attract customers at all hours. But if you own one—whether for a business or as home decor—you might wonder: Is it bad to leave neon signs on for long periods, even overnight?

The answer depends on several factors, including safety, energy consumption, and the longevity of the sign. Let’s break it down.

1. Safety Concerns

Generally, modern neon signs are safe to leave on for extended periods. They operate at low current and are designed with safety standards that prevent overheating. However, older or poorly maintained signs may pose risks, such as faulty wiring or damaged transformers, which could lead to electrical hazards.

Key Tip: If your neon sign is flickering, producing unusual heat, or emitting a burning smell, turn it off immediately and have it inspected by a professional.

2. Impact on Lifespan

Contrary to popular belief, frequently turning neon signs on and off can actually shorten their lifespan. Neon tubes are filled with gas that is excited by an electrical current; constant cycling can wear out the electrodes faster.

Many experts recommend leaving your neon sign on during business hours or for extended evening periods rather than switching it on and off multiple times a day.

3. Energy Consumption

Neon signs are surprisingly energy-efficient compared to other types of illuminated signage. A small neon sign can use as little as 60–100 watts, which is comparable to a household light bulb. Leaving it on overnight won’t cause a huge spike in your electricity bill, but turning it off when not needed can still save energy over time.

4. Best Practices for Leaving Neon Signs On

  • Regular Maintenance – Clean the tubes gently and have the wiring checked yearly.

  • Use a Timer – Set it to turn off automatically during closed hours.

  • Avoid Moisture Exposure – Keep indoor neon signs away from damp areas.

  • Monitor Temperature – Ensure good ventilation to prevent overheating.

5. Conclusion

Leaving a neon sign on isn’t inherently bad, especially for modern, well-maintained units. In fact, constant operation may even extend its life compared to frequent switching. Still, if you want to save energy and reduce wear, using a timer or turning it off when not needed is the best practice.

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