How Long to Leave Fluorescent Lighting On: Saving Energy and Extending Lifespan
How Long to Leave Fluorescent Lighting On: Saving Energy and Extending Lifespan
When deciding whether to leave fluorescent lights on or off, it is important to consider both energy efficiency and the longevity of the bulbs. Generally, fluorescent lights are designed to be energy-efficient, but certain conditions can impact their lifespan and energy consumption.
When to Leave Fluorescent Lights On
If you plan to return to a space in less than 15 minutes, it is energy-efficient to leave the fluorescent lights on. This is because the process of turning the lights on and off can cause wear and tear on the bulbs, especially the older “rapid start” fluorescent tubes. These tubes require a warm-up period to reach their full brightness, and frequent on/off cycles can shorten their lifespan.
Optimal Times for Turning Off Fluorescent Lights
For optimal energy savings and bulb longevity, consider the following times when deciding whether to turn off fluorescent lights:
Newer “instant on” fluorescent tubes and “instant on” compact fluorescent tubes: It is best to leave these lights on for no more than 1 minute before turning them off. Newer technology allows the bulbs to start quickly and efficiently without a significant loss of energy. Older “rapid start” fluorescent tubes: These bulbs require a warm-up period, and it is advisable to leave them off for no longer than 5 minutes. Leaving them on for longer periods will not save much energy and may reduce their lifespan.Modern Alternatives: LED Lights
Given the advancements in lighting technology, it is now recommended to avoid using fluorescent lights altogether. Energy-efficient LED lights have become the preferred choice for many due to their longer lifespan and lower energy consumption. Fluorescent lights should have been replaced by LED lights several years ago, as they offer superior performance and cost savings over time.
Conclusion
In summary, the duration for which you should leave fluorescent lights on before turning them off depends on the type of bulb and your intended return time. For best energy efficiency and longevity, ensure you adhere to the recommended guidelines. Additionally, consider transitioning to LED lights, as they provide significant benefits in terms of energy conservation, cost savings, and overall performance.
Additional Resources
For more information on lighting technology and energy efficiency, refer to resource 1 and resource 2.