A well-maintained air conditioner typically lasts between 10 and 15 years, though the lifespan can vary depending on the brand, usage frequency, and quality of maintenance. In the Philippines, where air conditioners often run for many hours a day due to the hot climate, units that are not cleaned and serviced regularly tend to deteriorate faster and consume more electricity as they age. Having the unit cleaned every three to six months, replacing filters as needed, and scheduling periodic professional servicing are the most effective ways to extend the life of an air conditioner and maintain its efficiency throughout its lifespan.