For example , Sylvania 's Daylight CFLs have a color temperature of 3,500 K , while most other lamps called daylight have color temperatures of at least 5,000 K. CFLs typically have a rated service life of 6,000-15 ,000 hours , whereas standard incandescent lamps have a service life of 750 or 1,000 hours .
CFLs typically have a rated lifespan of 6,000 to 15,000 hours , whereas incandescent lamps are usually manufactured to have a lifespan of 750 hours or 1,000 hours .