Energy Efficient Lighting Terminology
Color Temperature- Light is measured in Kelvins ranging from 9000K (which appears to be blue) down to 1500K (which appears orange-red). Color temperatures of 4000K or more are considered cool, 3100K or less are considered warm. 5500K is closer to sunlight at noon.
Foot Candles – the unit of measurement indicating how much illumination is reaching a surface.
CRI- Color rendition is the color appearance of an object when lighted. The higher the color rendering index (CRI), the less distortion of the object's color. Scales ranges from 0 to 100. Higher number indicates less color shift.
HIF High Intensity Fluorescent T8 and T5 High Bay Fixtures:
- Realize 50-70% savings in lighting energy costs
- Provides a whiter light, improving productivity and employee morale.
- Provides 40-80% more light
- Runs cooler, less taxing on your A/C
- Allows certification for IRS EPAct05 tax deduction
- Realize incentives from your local utility company
- Lower maintenance costs
*HID High Intensity Discharge (Older, Less Efficient Lighting):
- 458 watts vs. 216-226 watt fluorescent fixtures
- More expensive to operate by 50%
- Light is not as bright, due to depreciation
- Light is not as white
- Runs much warmer, taxing your A/C
*HID Lights would include all three types: Metal Halide, High Pressure Sodium and Mercury Vapor lights.