Typically, HVAC units in Louisville last about 10-15 years. Maintenance upkeep will allow your unit a longer life span. However, if you are experiencing unexpected repairs (and they are more often), this could be a sign your unit needs to be replaced.
HVAC units keep up with technology and therefore are becoming more and more efficient every year. Efficient units save you significant money on your utility bill each month.
Another consideration is the refrigerant. If your unit is 10 years old or older, it is most likely using R-22 refrigerant. R-22 is obsolete and will not be available very soon – in fact, it is challenging to find it now, which means your unit will need to be replaced in the near future with a newer one.