Comparison Item | 400 Watt Metal Halide |
Great Lakes T-8 Fluorescent |
1000 Watt Metal Halide |
Great Lakes T-5 Fluorescent |
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Watts Consumed |
465 | 221 | 1165 | 354 | |||||||||||||||
Annual Electricity Cost Per Fixture (Assuming 24/7 operation at .055 cents per kilowatt) |
$224 | $106 | $561 | $171 | |||||||||||||||
Rated Life of Lamp (Assuming 12 hours of operation between each start) |
20,000 | 30,000 | 24,000 | 30,000 | |||||||||||||||
Replacement Lamp Costs (Great Lakes fixtures use six lamps) |
$30 | $21 | $65 | $51 | |||||||||||||||
Recycling Lamp Costs |
$16 | $2 | $20 | $3 | |||||||||||||||
Color Rendering (Percentage of light as compared to “natural” light) |
65% | 85% | 65% | 85% | |||||||||||||||
Lumen Maintenance of Lamp (Percent of output maintained over rated life of lamp) |
60% | 93% | 60% | 93% | |||||||||||||||
Increased Light Levels (Measured in foot-candles) |
x | Up to 50% |
x | Up to 15% |
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Fixture Weight |
30lbs. | 12lbs. | 40lbs. | 12lbs. | |||||||||||||||
BTU’s Of Fixture (Average heat produced by fixture) |
1,587 | 764 | 1,786 | 1,238 | |||||||||||||||
Restart Time (Time required for fixture to turn back on) |
10 min. |
Instant | 10 min. |
Instant | |||||||||||||||
Special Features (Ability to add Motion Sensors, Emergency Ballasts, etc�) |
NO | YES | NO | YES | |||||||||||||||
Warranty | 5 yr 6 mth |
Ballast Lamp |
5yr 3yr |
Ballast Lamp |
5yr 6 mth |
Ballast Lamp |
5yr 3yr |
Ballast Lamp |
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Information obtained through research and testing. Our field test will provide the most accurate comparison. |
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