Furnaces and Boilers | Department of Energy

Upgrading your furnace or boiler from 56% to 90% efficiency in an average cold-climate house will save 1.5 tons of carbon dioxide emissions each year if you heat with gas or 2.5 tons if you heat with oil. ... Old coal burners that were switched over to oil or gas are prime candidates for replacement as well as gas furnaces with pilot lights ...

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HyProTherm COAL Boiler 185

HyProTherm Coal Boiler 300 $7237 - with CAST IRON grates 348000 BTU and a 300 gallon water tank. 8700 sq ft.* 58" deep firebox x 30" wide. HyProTherm Coal Boiler 350 $7927 - with CAST IRON grates 407000 BTU and a 350 gallon water tank.

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