AFUE EFFICIENCY - American Made Gas and Oil-Fired
2015-8-25 · Gas-Fired Boilers USC • Sealed Combustion, Gas-Fired, Hot Water Boiler Select the USC boiler for new construction, replacement or conversion. With an 87% AFUE efficiency rating, the USC offers one of the highest cast iron to Btu heating capacity ratios in the industry. The sealed combustion system mixes outside air and fuel for optimized ...
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