Built for efficiency: Enjoy the benefits of a gas furnace built to work its best without wasting energy. The XC95m has an AFUE rating of up to 97.3%, which means most of its fuel becomes usable heat for your home. Consistent and precise: Get continual warmth all winter long with a variable-speed blower motor. Quiet comfort: Feel the effects of your high-efficiency furnace without having to hear it. The XC95m includes an insulated cabinet that helps ensure quiet operation.