Old 01-08-2010, 07:37 AM
BurntFingers's Avatar
Join Date: Jun 2009
Location: Ocean County New Jersey
Posts: 137
Default Heat Values of assorted US firewood

Wood---------Weight/cord dry---------BTU X 10 to the 6th available
Ash-----------3,370--------------------- 24,000
Soft Maple----2,970---------------------20,800
Red Oak-------3,609--------------------25,300
White Oak-----3,803--------------------27,000

This data was obtained from a 2009 workshop by Dusty Dowse on Heat Management : in a Wood-Fired Masonry Oven at the Kneading Conference in Maine. I think he said dry meant around 20% moisture otherwise the wood gasification would not provide the extra heat. Basically I think it is around 7,000 to 8,000 BTU's per pound of wood regardless of the species.

Last edited by BurntFingers; 01-08-2010 at 07:41 AM. Reason: table didn't look right
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Old 01-08-2010, 08:47 AM
Join Date: Sep 2009
Location: Lancaster County, PA
Posts: 9
Default Re: Heat Values of assorted US firewood

Looks good now. Thanks.
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Old 01-08-2010, 11:58 AM
Jed Jed is offline
Join Date: Apr 2008
Location: Bend, Oregon; West Coast USA
Posts: 428
Default Re: Heat Values of assorted US firewood

Hey Burntfingers,

This is in line with my memory... (as sketchy as my memory can be!).

It seams to me, that we visited a similar topic a year or more ago and the conclusion I put in my mind - that by weight, most woods produce a similar amount of heat...

Is good to see the point brought up with some numbers to compare.

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Old 01-08-2010, 03:32 PM
Neil2's Avatar
Il Pizzaiolo
Join Date: Oct 2006
Location: Vancouver Island
Posts: 1,374
Default Re: Heat Values of assorted US firewood

"Basically I think it is around 7,000 to 8,000 BTU's per pound of wood regardless of the species."

That is pretty much the same number as the US Forest Service data provides (6400 BTU/lb for "well seasoned firewood").

All wood is equal - by weight.

The reason that dense hardwoods are preferred for wood stoves is that you don't have to add wood as often. For a wood fired oven, of course, that doesn't matter.

Last edited by Neil2; 01-08-2010 at 03:36 PM.
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