First, many of the cast iron or steel boilers being removed from service are atmospherically vented, meaning that that the flue did not need to be sealed. High-efficiency boilers (and some ...

The 28HE Series high-efficiency cast iron commercial boilers offer thermal and combustion efficiencies of up to 86 percent for oil and 83 percent for gas. The boilers are available in 15 sizes, with ...

THE KN-SERIES OF CONDENSING CAST-IRON BOILERS is being expanded with two new sizes, the KN-16 (with a 1.6 million Btu capacity) and the KN-26 (with a 2.6 million Btu capacity). THE KN-SERIES OF ...