The decision will depend on how old the system is, how many times it has been already repaired in the past, and how well it is currently performing. As a general rule of thumb, you should consider replacing your cooling systems if they are more than 10 years old, have a SEER rating lower than 13, require frequent or costly repairs, or fail to cool your home adequately. Your budget may also be a key factor in your decision to buy a new system or opt for AC repair in Henderson.