Why Maximum Light Output Is Often Unnecessary
Most commercial lighting systems are designed to deliver more light than occupants actually need. Fixtures are typically specified at full rated output to ensure code compliance and visual comfort, yet those systems operate at 100% output far more often than required.
High-end trim—sometimes referred to as task tuning—is a control strategy that limits the maximum light output of a fixture (often to 70–80%) without affecting occupant perception. When properly applied, this strategy reduces energy consumption, glare, and driver stress while maintaining acceptable light levels.
Defining High-End Trim for Facility Managers
High-end trim is the intentional reduction of a fixture’s maximum light output using dimming controls or driver settings. Instead of allowing fixtures to reach 100% power, the system caps output at a predetermined level—commonly 70–80%.
| Output Setting | Perceived Brightness | Energy Impact |
|---|---|---|
| 100% | Baseline | Highest consumption |
| 80% | Nearly identical | ~20% reduction |
| 70% | Minimal difference | ~30% reduction |
Because the human eye responds logarithmically, occupants rarely notice the reduction.
High-End Trim vs. Task Tuning Terminology
The terms are often used interchangeably, but there is a subtle distinction.
| Term | Meaning | Typical Use |
|---|---|---|
| High-end trim | Caps maximum output | Energy savings |
| Task tuning | Adjusts output by task or zone | Visual optimization |
Both strategies are often deployed together in modern lighting control systems.
Measurable Energy Savings from Output Capping
High-end trim delivers persistent savings because it affects every operating hour, unlike occupancy sensors that rely on vacancy.
| Trim Level | Annual Energy Savings | Occupant Perception |
|---|---|---|
| 90% | ~10% | Indistinguishable |
| 80% | ~20–22% | No complaints |
| 70% | ~30% | Occasional notice |
Most facilities target 80% as the optimal balance.
Where High-End Trim Delivers the Most Value
Not all spaces benefit equally from high-end trim.
| Space Type | Recommended Trim | Reason |
|---|---|---|
| Open offices | 75–85% | Overlit by design |
| Corridors | 60–75% | Wayfinding only |
| Conference rooms | 80% | Presentation flexibility |
Task-critical environments such as labs may require minimal trimming.
Implementation Best Practices
Successful high-end trim requires coordination between design, commissioning, and operations.
- Document trim levels by zone
- Lock settings post-commissioning
- Educate facilities staff on intent
- Pair with occupancy and daylight controls
Improperly managed trim settings are often undone during maintenance calls.
Related Commercial Lighting Categories
High-end trim is one of the simplest and most effective ways to reduce lighting energy use—often delivering 22% savings without occupants ever realizing the system was adjusted.
Brandon Waldrop
As the lead technical specialist for our commercial lighting technical operations, Brandon Waldrop brings over 20 years of industry experience in product specification, outside sales, and industrial lighting applications.
His career began in physical lighting showrooms, where he focused on hands-on product performance and technical support. He later transitioned into commercial outside sales, working directly with architects, electrical contractors, and facility managers to translate complex lighting requirements into energy-efficient, code-compliant solutions.
Today, Brandon applies that industry experience to architect high-performance digital catalogs and technical content systems, helping commercial partners streamline the specification process and deploy lighting solutions with total technical confidence.
