How does the light output of an OttLite bulb compare to an incandescent bulb?
A 13 watt OttLite bulb has an approximate light output comparable to a 60 watt incandescent bulb and an 18 watt OttLite bulb has an approximate light output comparable to a 75 watt incandescent bulb. It is important to note, however that wattage only represents the amount of heat and energy being used, not the quality of the light output. In fact, most incandescent lighting wastes about 98% of the power they consume in heat. Eco-friendly, energy efficient OttLite lighting is specially formulated to be like natural daylight indoors with three distinct lighting formulas to help you do what you do better.