If you’re shopping for a new air conditioning system, the best way to control your energy costs is to purchase a high efficiency variable speed system. Variable speed means your system varies its speed depending on your home’s cooling requirements. Because of this, variable speed systems are more efficient than single-stage systems. Efficiency ratings also matter. When you match a 14, 16 or 18 SEER air conditioner with a variable speed air handler, you can rest assured that you’ve selected a home comfort system that is one of the quietest and most energy efficient available today.