Furnaces and Boilers | Department of Energy

If your furnace or boiler is old, worn out, inefficient, or significantly oversized, the simplest solution is to replace it with a modern high-efficiency model. Old coal burners that were switched over to oil or gas are prime candidates for replacement, as well as gas furnaces with …

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Low Water Cutoff Controls: Guide to LWCOs on hot water

When we flush a steam boiler or a hydronic heating boiler low water cutoff valve we: Place a 5-gallon bucket under the end of the flush valve drain pipe, being careful not to bang into piping and maybe cause a leak; Open and shut the flush valve several times, opening it briefly - just a few seconds, then closing it each time. This avoids a

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Furnaces and Boilers | Department of Energy

If your furnace or boiler is old, worn out, inefficient, or significantly oversized, the simplest solution is to replace it with a modern high-efficiency model. Old coal burners that were switched over to oil or gas are prime candidates for replacement, as well as gas furnaces with …

Learn More