If you search online for answers related to the question how long do air conditioners last then you will get all sorts of answers and some of these are really confusing because these are contradicting and that makes no sense because there is no general answer to this question even if you are using the same make and model, the lifespan of an air conditioner can vary from user to user and from one location to another, this plays an important part, the most important factors that decide the lifespan of an air conditioning unit are

  1. Location: Where you live and what are the weather conditions there, if you are living in a coastal city and there is a lot of rust then the outer and even the inner coils would have a shorter life compared to a city which has dry weather conditions, in favorable conditions solid air conditioning units can last up to fifteen to twenty years and this is really important in knowing what will be the lifespan of an air conditioning unit, but still there are a few things you can do to increase the lifespan even in a coastal city like using anti-rust spray or placing sheds where the outer is mounted.
  2. Maintenance and brand: How you clean, service and maintain the coils, thermostat and condenser and how you ensure furnace repair and clean filters will also decide what sort of lifespan your air condition will have, clogged air filters would put a lot of extra load on the unit and it will work even harder to cool the premises and another important thing will obviously be the brand, if you are buying a top brand then expect it to last a few years at least and it actually has a life of over a decade.