replacing EFM coal boiler w/ gas

Old 12-26-06, 04:55 PM
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replacing EFM coal boiler w/ gas

I will be replacing my mother's 50 year old efm coal boiler in early spring. I found 2 different model # on the side
"a350" and "an520" . Can someone give me an approximate btu ouput for this boiler.

Also in N.E. PA. would you recommend natural gas or stick with coal ?

Old 12-26-06, 06:02 PM
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I would save the coal for the electric generation plants and put an oil powered boiler in the house.

Old 12-26-06, 06:47 PM
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I would absolutely _not_ size a new boiler using the BTU rating of the old one. Either do or have done a decent heat loss calculation for the house and size the boiler to that, the way it should be done. There are threads around here that discuss it. Good free software can be had at .

Can't speak to oil vs. gas in your area.
Old 12-26-06, 07:09 PM
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New Boiler

Xiphias has offered some sound advice. As far as what you use for fuel, that becomes a matter of cost & personal preference. Personally, I lean toward oil for the safety & independence factors but natural gas also has advantages. I do agree with KField on his suggestion to abandon the coal idea.
Old 01-02-07, 03:09 AM
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Smile Steam or H.W.??

Is it a steam or hot water boiler? If it is steam, then it is more efficient to install an oil fired boiler. If it is hot water, it is a toss up, unless you don't mind spending an extra $1k-2k, then I reccomend a Buderus wall hung boiler that gets 98+/- % efficiency. I like oil more personally. Although it would be terribly inefficient, you could convert the coal boiler into a gas or oil boiler. Good Luck!
P.S. Have a heat load performed by someone who does it regularly, such as the sales rep at the supply house.

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