Types of Lighting
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.
|Color Rendition Index
|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|
|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|
|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|
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