Most homeowners wish that the gas furnace in their home would last forever. And that wish could be granted when you install an Amana brand gas furnace.  The complete lineup of Amana brand gas furnaces offer what many conclude are the best warranty programs in the heating and cooling industry. Several furnace models offer variable and multi-speed performance. This provides enhanced indoor comfort by slowly ramping-up to your thermostat setting rather that simply starting at full speed. This alleviates the ‘cold air blow’ often associated with single speed furnaces. To find the highest level of energy efficient gas furnaces look for the highest AFUE rating.