Bryant \"511\"

CharlesEllert

I have a boiler which I believe is original to my 1920 home.

It is marked The Bryant Heater and Mfg Co. Cleveland, O. The number 511 is below this. I assume it is the model number. My system is an incredibly well balanced gravity hot water system. The boiler is running strong and is problem free.

I am currently debating whether or not to replace her. I would love to lower my gas bill significantly, however, I am trying to determine how long it would take me to re-coup the 6-7K investment in a new one.

Does anyone have any idea how efficient this boiler is? Is there a simple way for me to calculate it based on the fact I use 270 mcfs per year to heat a 5000 sq. ft. home? The attic is insulated, and the house has triple track windows.

Any help would be greatly appreciated.

Thanks.

Steamhead (in transit)

With the insulation and windows

that Bryant is likely way oversized now, in addition to being relatively inefficient. Boiler this old were never tested for AFUE performance, but I bet it wouldn't exceed 65% on a good day.

Start with a heat-loss calculation of your house, and go from there. Click the Resources button above, then heat Loss Calcs to get a free calc program from Slant/Fin that will run on any Windows computer.

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