Gas-Fired Steam Boilers

Products   Energy Efficiency (AFUE) Price
Guide*
GSB8-E Boiler   up to 82.7 $
Standard efficiency, gas-fired steam boiler 

Gas-Fired Water Boilers

ESTAR ICON ENERGY STAR® Product   Energy Efficiency (AFUE) Price
Guide*
ESTAR ICON GCWB95 Boiler NEW up to 95 $$$
High efficiency, modulating gas-fired condensing combination water boiler 
ESTAR ICON GWM-IE Boiler   95 $$$
High efficiency, modulating gas-fired condensing water boiler 
ESTAR ICON GWB9-IH Boiler   90 $$$
High efficiency, gas-fired condensing water boiler 
GWB8-IE Boiler   up to 84.4 $$
Standard efficiency, gas-fired water boiler 
GWB8-E Boiler   up to 83.9 $
Standard efficiency, gas-fired water boiler 

Oil-Fired Water Boilers

Products   Energy Efficiency (AFUE) Price
Guide*
COWB3 Boiler   up to 84.3 $$
Standard efficiency, oil-fired water boiler