Every air conditioner eventually reaches the end of its useful life. The challenge is that most systems don't stop working overnight. Instead, they begin sending small signals. The problem is that many homeowners don't recognize these changes as warning signs. They simply assume their air conditioner is "getting older" and hope it makes it through one more summer. Learn about seven signs that your air conditioner may be telling you it's time to start planning.

Your air conditioner certainly plays a role in your monthly energy costs, but it's only one piece of a much larger picture. The reality is that your home's insulation, windows, attic, daily habits, and even Houston's heat and humidity all affect how hard your HVAC system has to work. Understanding those factors can help you lower your cooling costs, improve your home's comfort, and know when it's time to call a professional - and when it isn't.