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ErikHats t1_ivem7kf wrote

It's worth to note that new modern fireplaces use airflows to burn more cleanly and completely, getting more heat out of the same amount of wood.

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donhilskier6 t1_ixos1zn wrote

Yes, modern wood stoves move the efficiency from perhaps 65% to 90%. Frankly burning wood is still a very environmentally friendly means of heating even in an inefficient form. Open fireplaces are essentially worthless though.

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