LED versus Incandescent
LEDs consume a minimum of 75% less energy and have a lifespan 25 times greater than incandescent bulbs, as stated by energy.gov; also, they typically provide superior illumination control and design versatility.
LED lighting enables an architect's design to be highlighted, either integrating seamlessly or accentuating specific features. Dan Kohnen, director of commercialization at H.E. Williams, stated in a prior piece for gb&d, "The most effective lighting tools are those that an architect utilizes to highlight the architecture rather than the product itself." Kohnen has collaborated with H.E. Williams, a lighting manufacturer with over a century of history, since 1999 and has observed the design industry adapt to include increased LED lighting and
Incandescent bulbs are less expensive than LED bulbs; nonetheless, they require more frequent replacement, and sourcing replacements is becoming progressively more challenging. The manufacture and sale of incandescent lights, specifically those producing less than 45 lumens per watt, were prohibited in 2023 due to amendments in the DOE's minimum efficiency criteria.
Halogen versus LED
Halogen lights offer aesthetically pleasing illumination but has a limited lifespan, lasting between 2,000 and 4,000 hours before necessitating replacement. In comparison to conventional incandescent bulbs, this represents a significant enhancement; yet, it still considerably lags behind the usual lifespan of 50,000 to 100,000 hours typical of most LEDs.
Besides their reduced lifespan, halogen bulbs also dissipate considerably more energy as heat compared to LEDs, with the majority of halogen bulbs converting 80% to 90% of their energy into thermal output. Conversely, LEDs turn approximately 5% of their energy into heat. Similar to incandescent bulbs, the low energy efficiency led to the nationwide prohibition of the production and sale of the majority of halogen lights in 2023.
LED versus Fluorescent Bulbs
Fluorescent bulbs, being highly energy-efficient, have historically been the preferred lighting option in environments such as workplaces, schools, warehouses, and garages, where they remain prevalent today.
There are two primary categories of fluorescent bulbs: compact fluorescent and linear fluorescent.
LED versus Compact Fluorescent
Compact fluorescent bulbs (CFLs) are an energy-efficient lighting option that utilize gas reactions to generate visible light. Compact fluorescent lamps (CFLs) consist of a foldable tube containing a mixture of argon and mercury vapor, with the inside coated in a thin layer of fluorescent phosphor. Upon activation, the CFL's internal ballast mechanism transmits an electric current through the tube to energize the gases and generate ultraviolet light. The fluorescent paint coating absorbs UV radiation and emits visible light through the tube's glass envelope.
Compact fluorescent lamps (CFLs) are regarded as comparatively efficient, use 70% less energy and generating 70% less heat than incandescent bulbs. Compact fluorescent lamps (CFLs) possess an average longevity of 10,000 to 15,000 hours, markedly exceeding the 1,000-hour lifespan of the majority of incandescent bulbs, although still lagging behind most light-emitting diodes (LEDs).
Compact fluorescent lamps (CFLs) are scheduled for prohibition, having already been banned in several jurisdictions due to evolving minimum efficiency criteria.
LED versus Linear Fluorescent
Linear fluorescent bulbs are functionally equivalent to CFLs, differing solely in shape; rather than the conventional oblong or twisted-tube design, linear fluorescent lights are elongated tubes. Linear fluorescent lights consume an equivalent amount of energy as CFLs, although exhibit a significantly variable lifespan, ranging from 6,000 to 60,000 hours, indicating their potential to survive as long as certain LEDs. This variety mostly arises from their production processes, operational conditions, and the type of control circuitry employed.
Similar to CFLs, certain linear fluorescent bulbs are being prohibited in several areas, namely Vermont and California.
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