If your system is over 10-15 years old and requiring frequent repairs, replacement usually makes more financial sense. When repair costs exceed half the value of a new system, or when your energy bills keep climbing despite repairs, it’s time to consider replacement. Other clear signs include uneven cooling throughout your home, excessive humidity even when the AC runs, or if your system can’t maintain comfortable temperatures during Hollywood Park’s hottest days. A struggling system works harder, costs more to operate, and will eventually fail when you need it most.