R&D Indoor Comfort HVAC Products: Furnaces
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Furnaces

Gas Furnaces

ESTAR ICON ENERGY STAR® Product
AFUE : up to 98.7     
Price Guide  : $$$
The quietest and most efficient furnace you can buy*
AFUE : up to 97.5     
Price Guide  : $$$
First-in-class, lowest emission furnace on the market*
AFUE : 80     
Price Guide  : $$$
The quietest furnace in its class*
AFUE : 80     
Price Guide  : $$$
First-in-class, lowest emission furnace on the market*
AFUE : 96     
Price Guide  : $$
High-efficiency, variable-speed gas furnace
AFUE : 96     
Price Guide  : $$
Two-stage furnace with Power Saver technology
AFUE : 80     
Price Guide  : $$
Consistent temperatures with two-stage heating
AFUE : 96     
Price Guide  : $$
Single-stage furnace with Power Saver™ technology
AFUE : 95     
Price Guide  : $$
Single-stage furnace with Power Saver technology
AFUE : up to 95     
Price Guide  : $$
First-in-class, lowest emission furnace on the market*
AFUE : up to 80     
Price Guide  : $$
First in class, lowest emission furnace on the market*
AFUE : 95     
High-efficiency gas furnace
AFUE : 93     
Economical, high-efficiency gas furnace
AFUE : 80     
Economical, standard-efficiency gas furnace
AFUE : 80     
Economical gas furnace with Power Saver™technology

Oil Furnaces

Products
AFUE : 85     
Price Guide  : $$$
Variable-speed oil furnace
AFUE : 83     
Price Guide  : $$
Quiet and efficient oil furnace