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lighting types





efficient lighting
When selecting energy-efficient lighting, explore the various lighting options for indoors and/or outdoors.

Types of lighting include:
Use the chart below to compare some of the different types of lighting.


Lighting Comparison Chart
Lighting type Efficacy
(lumens/watt)
Lifetime
(hours)
Color rendition index (CRI) Color temperature
(K)
Indoors/outdoors
Incandescent          
Standard "A" bulb 10–17 750–2500 98–100 (excellent) 2700–2800 (warm) Indoors/outdoors
Tungsten halogen 12–22 2000–4000 98–100 (excellent) 2900–3200 (warm to neutral) Indoors/outdoors
Reflector 12–19 2000–3000 98–100 (excellent) 2800 (warm) Indoors/outdoors
Fluorescent          
Straight tube 30–110 7000–24,000 50–90 (fair to good) 2700–6500 (warm to cold) Indoors/outdoors
Compact fluorescent lamp (CFL) 50–70 10,000 65–88 (good) 2700–6500 (warm to cold) Indoors/outdoors
Circline 40–50 12,000     Indoors
High-intensity discharge          
Mercury vapor 25–60 16,000–24,000 50 (poor to fair) 3200–7000 (warm to cold) Outdoors
Metal halide 70–115 5000–20,000 70 (fair) 3700 (cold) Indoors/outdoors
High-pressure sodium 50–140 16,000–24,000 25 (poor) 2100 (warm) Outdoors
Low-pressure sodium 60–150 12,000–18,000 -44 (very poor)   Outdoors


Related category

   • LIGHTING TOPICS