Looking for top-of-the-line comfort, performance and efficiency? As its name suggests, the Infinity series takes them further than they’ve ever been. But if the top has a top, its name includes Greenspeed® Intelligence. Carrier gas furnaces with Greenspeed Intelligence monitor temperature and humidity, inside and out, then automatically vary furnace operation as needed to provide an ideal combination of comfort and energy efficiency. With Greenspeed Intelligence and variable-speed components, you can avoid wasting money for heating capacity you don’t need.