Up to 12 years lifetime
Modern technologies have a longer lifetime than standard bulbs. With 12 years lifetime, one Philips energy saving lamp replaces 12 standard bulbs. So they save money and last longer, year after year. The lifetime is based on the average usage of 2,7 hrs per day or 1.000 hrs a year. This average is influenced by the usage during different seasons (dark winter vs light summer), the weather conditions (sunny vs rainy dark day) and on the room where the lamp is used (short usage in bathroom vs long usage in living room).