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Lighting & Bulb Types Comparisons

You'll find that you have several options to consider when selecting what type of lighting you should use in your home.

When selecting energy-efficient lighting, it's a good idea to understand basic lighting terms and principles. Also, it helps to explore your lighting options for indoors and/or outdoors if you haven't already. This will help narrow your selection.

Types of lighting include:

* Fluorescent lighting

* High-intensity discharge lighting

* Incandescent lighting

* Low-pressure sodium lighting

* Outdoor solar lighting

You can use the chart below to compare 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


Information couretesy of EERE

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