Four Seasons Resource Center likes to promote the use of Energy Star products, especially when it comes to heating and cooling. The benefits of using energy star furnaces and air conditioners are numerous; one of the most beneficial to consumers is the opportunity to save money on heating and cooling costs. However, when it comes time to purchase a new central air conditioner, you should also get a system that is installed properly. If not properly sized or installed the efficiency of your system can be reduced by up to 30 percent. This will result in higher utility bills and possibly shorten the life of the equipment.