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Hospitals are places people rarely choose to be, yet some of life’s most important moments happen there. Patients try to rest and recover, clinicians perform demanding work, families wait under stress, and facility teams keep essential systems operating around the clock. Lighting is one of the few building systems that touches every person in a hospital, every hour of every day. The built environment shapes each of those experiences, and lighting plays a central role in how hospital spaces function day in and day out.

Few building systems touch as many priorities at once. Lighting influences comfort, visibility, workflow, energy use, maintenance demands, and long-term infrastructure planning. As hospitals navigate aging infrastructure, evolving care models, and cost pressure, lighting has become one of the more practical ways to improve performance across multiple dimensions.

Many hospitals still operate with systems designed around earlier technologies and planning standards. Fluorescent fixtures, limited controls, and rigid lighting layouts were once common. Over time, those systems can create friction through inconsistent light quality, higher maintenance needs, and reduced flexibility as space use changes.

Modern lighting strategies can help hospitals support recovery, improve working environments, reduce operating burdens, and create spaces better suited to changing needs.

Lighting for the people inside hospitals

Healthcare environments place different lighting demands on the same space throughout the day. A patient room may need soft ambient light for rest, focused illumination for treatment, and low-level nighttime lighting that supports safe orientation. Nursing stations and clinical work areas require sustained visual comfort during long shifts, while public areas benefit from lighting that helps visitors navigate unfamiliar settings with less stress.

Supporting rest and circadian entrenchment:

Hospitalization often interrupts normal routines and natural time-of-day cues. Patients may spend extended periods indoors under static lighting conditions that do not reflect the rhythms the body expects. Research continues to explore how dynamic lighting can support recovery environments.

A 2025 clinical study at Mount Sinai Hospital evaluated a programmable dynamic lighting system in a cardiology unit against standard fluorescent lighting. Patients in rooms with tunable, spectrally cycling light – cooler and brighter during the day, warmer and dimmer in the evening – slept an average of 66 minutes more per night and showed improved circadian entrenchment, indicating earlier and better‑aligned sleep timing. Findings also indicated more consolidated nighttime rest and lower daytime sleep probability.

These strategies may be especially relevant in neonatal care, maternity units, and behavioral health settings, where sleep quality, comfort, and environmental sensitivity are often central considerations.

Supporting clinical staff performance:

Healthcare work depends on visual accuracy. Reading monitors, preparing medications, documenting care, assessing patient condition, and moving quickly through complex spaces all rely on clear, comfortable illumination across long shifts. Fatigue, eye strain, and cognitive overload are daily realities in many healthcare environments, especially during overnight care. Similar principles that support patient rest can also benefit staff working night or rotating shifts, where structured bright-light exposure has been associated with improved circadian adaptation and reduced subjective fatigue.

A randomized controlled study published in the Sleep Health Journal found that nurses working rapidly rotating schedules reported lower fatigue after an evening light intervention, which was also associated with a 67% reduction in work-related errors compared with baseline. The findings suggest that lighting strategies can influence not only visual comfort, but also alertness and performance during overnight care.

Task-appropriate lighting, balanced distribution, glare control, and responsive controls can help align clinical spaces with changing workflows across the day.

Improving comfort for patients and families:

Patient experience is shaped not only by clinical care, but also by whether the environment feels calm, intuitive, and responsive to individual needs. Layered lighting strategies can help balance staff requirements with patient comfort, while simple bedside controls may allow small adjustments with less reliance on caregivers.

In some settings, more specialized lighting approaches can further support comfort and experience. Tunable or color-changing lighting may be used in areas such as imaging suites, maternity spaces, and pediatric environments to help reduce stress, create a more welcoming atmosphere, or mark meaningful moments. In children’s hospitals, these strategies are often integrated more broadly to make clinical spaces feel less intimidating and more supportive for patients and families.

Families and visitors also spend long hours in corridors, waiting rooms, and patient rooms. Even illumination, clear visual hierarchy, and welcoming public-facing spaces can support wayfinding and create a more reassuring environment during

Lighting and hospital operations

Alongside human experience, lighting decisions also influence operating costs, maintenance workloads, and the adaptability of healthcare spaces over time.

Lowering energy use in 24/7 facilities:

Hospitals operate continuously, making lighting efficiency especially relevant. LED systems have reshaped the economics of healthcare lighting through lower energy consumption and longer service life compared with many legacy technologies.

LED platforms also integrate effectively with occupancy sensing, daylight harvesting, scheduling, and dimming controls. In facilities with lighting spanning thousands of rooms and corridors, these capabilities can deliver meaningful reductions in energy use while supporting diverse operational. Many modern lighting control systems can also connect with a hospital’s building automation system, allowing occupancy data to inform HVAC operation and support additional energy savings.

Reducing maintenance burden and disruption:

Older lighting systems require frequent lamp and ballast replacements, specialized parts, and coordinated access to occupied care spaces. Each service call consumes labor, requires scheduling, and can create avoidable disruption in areas where uninterrupted rest and focused clinical work matter.

In some regions, including California, the transition away from fluorescent lighting is also being accelerated by restrictions on mercury-containing products, making upgrades to newer technologies increasingly practical as well as operationally beneficial.

Modern systems reduce those burdens through longer service intervals, improved reliability, and controls that limit unnecessary operating hours. Fewer interventions may also contribute to quieter and more predictable environments for patients and staff.

Supporting adaptable care environments:

Healthcare spaces evolve constantly. Rooms change function, workflows shift, and staffing patterns vary throughout the day. Static lighting systems can be difficult to adapt.

Lighting that can be tuned, scheduled, and reconfigured allows spaces to respond to changing needs without wholesale infrastructure replacement. A single room may need to accommodate treatment, cleaning, rest, and family presence over the course of one day. Systems that respond to those changes give hospitals more flexibility without repeated physical renovation.

Evaluating life cycle value:

In healthcare settings, the cost of lighting extends beyond fixture price. Labor, maintainability, disruption risk, control capability, and future flexibility all shape long-term value.

Lifecycle-based planning can help organizations compare options through the lens of total ownership cost rather than initial purchase cost alone. For facilities expected to operate for decades, those decisions often carry lasting operational implications.

Looking ahead: DC lighting and infrastructure resilience

For hospitals planning new construction or major renovation, lighting modernization can also prompt a broader infrastructure conversation: how the system is powered, maintained, and positioned for future performance.

LEDs operate on direct current (DC), yet most buildings distribute alternating current (AC), requiring each to convert power locally through a driver. These drivers are a hidden maintenance liability. While LED light sources can last 20 years or more, drivers often fail within 7 to 10 years — creating a cycle of replacements across thousands of fixtures that require access to occupied spaces. Each driver also introduces an efficiency penalty—often around 5% power loss per conversion—which can add up significantly across large healthcare facilities with extensive lighting systems.

DC lighting systems address this by centralizing power conversion and distributing low-voltage direct current throughout the building. Removing drivers from individual fixtures reduces points of failure and allows LED sources to perform closer to their rated lifespan. In some configurations, direct DC drivers can also be used to avoid conversion losses at the fixture level. Centralized conversion equipment that does eventually require service is generally far easier to access and replace than components distributed across a ceiling grid.

Hospitals are particularly well-positioned to benefit from this architecture. Their 24/7 operations make maintenance access costly and disruptive, while large fixture counts can amplify replacement cycles over time.

Low-voltage (Class 2) DC systems may also require less conduit than 120- or 277-volt AC systems, reducing installation labor and construction complexity. From an operational standpoint, lower voltages improve safety during maintenance activities in occupied areas. Looking ahead, as more healthcare organizations adopt on-site power generation, DC lighting systems may also connect more directly to DC sources, such as photovoltaic systems, reducing the number of conversion steps from the source to the load.

DC lighting is still emerging, but interest is growing as healthcare organizations look for ways to simplify maintenance, improve resilience, and reduce long-term infrastructure cost. Salas O’Brien has been at the forefront of this work, with members of our electrical engineering team holding patents for DC power delivery systems and collaborating with manufacturers to bring commercial solutions to market.

At their best, healthcare environments help people feel calmer, safer, and better supported during some of the most difficult times of their lives. Thoughtful lighting design plays a quiet but essential role in helping these environments work better for everyone who depends on them.

To hear additional perspectives from Salas O’Brien’s healthcare lighting experts, watch Better lighting, better hospitals, where Kelly Jones, Andy Powell, Steve Duff, and Duc Bui discuss how lighting influences patient experience, staff performance, and long-term facility operations.

How Salas O’Brien can help

Lighting decisions affect every space and every user in a hospital. Whether planning new facilities, undertaking major renovations, or evaluating targeted upgrades, Salas O’Brien’s lighting designers and electrical engineers help organizations align lighting strategies with patient experience goals, staff needs, and operational realities.

Our integrated approach – bringing design and engineering together early – reduces coordination gaps and supports better outcomes over the life of a facility. Thoughtful lighting design helps hospitals create environments that work better for the people who rely on them every day.

Contact our experts below or reach out to our healthcare lighting team at [email protected] to start the conversation.

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