Gas Furnaces-Heating and air conditioning systems are the biggest users of energy in the home, up to 75% of the utility bill. A new high efficiency furnace can save up to 50% in operating costs over a ten year old furnace. Many 1990 and earlier model furnaces have efficiencies of 65% or less. The minimum efficiency furnace that can be sold in the United States today is 78%. Furnaces are available that are up to 96.6% efficient.

Oil Furnaces-If you enjoy the fuel-efficiency and clean-burning performance of an oil system, consider a powerful Performance™ Variable Speed 80 or Comfort™ 80 series oil furnace. Remember, the higher the AFUE rating, the more energy efficient the unit will be.