The best lumen output for warehouse lighting depends on the size of the warehouse and the type of products being stored. For a small warehouse with low ceilings, a lumen output of 50 lumens per square foot may be sufficient. For a large warehouse with high ceilings, a lumen output of 100 lumens per square foot may be necessary.

There are several ways to save money on warehouse lighting, including:

• - Using energy-efficient lights, such as LED lights.
• - Installing motion sensors to turn lights off when they are not in use.
• - Using dimmers to reduce light levels when they are not needed.
• - Maintaining lights regularly to keep them operating at peak efficiency.

Consider illumination level, energy efficiency, lighting uniformity, color rendering index (CRI), lifespan, and fixture durability. Also, factor in maintenance costs, controls integration, and adherence to relevant regulations.

LED high bay fixtures are the ideal choice for warehouses, providing even illumination. Consider ceiling height, activity type, DLC certification, adjustable beam angles, and lighting controls.

Yes, there may be regulations or guidelines that need to be followed when upgrading warehouse lighting. For example, some municipalities or states have energy codes or standards that mandate certain lighting levels or energy efficiency requirements for commercial buildings. Additionally, OSHA (Occupational Safety and Health Administration) has guidelines for workplace lighting to ensure safe working conditions. It's important to research and comply with any applicable regulations or guidelines when upgrading warehouse lighting to avoid penalties and ensure the safety and efficiency of the space.