Comment Comment by minerva23 Article:> The energetic output of an oven stove is 80 to 90 percent, compared to 40 to 50 percent for metal stoves or central heating appliancesEnergy.gov> Old furnaces: 56% to 70%> Mid efficiency furnaces: 80% to 83%> High efficiency furnaces: 90% to 98.5%https://www.energy.gov/energysaver/furnaces-and-boilersEDIT: We can cut the article some slack as ducting (as typically done) does account for losses which are highly variable. parent minerva23 4 years ago
> The energetic output of an oven stove is 80 to 90 percent, compared to 40 to 50 percent for metal stoves or central heating appliances
Energy.gov
> Old furnaces: 56% to 70%
> Mid efficiency furnaces: 80% to 83%
> High efficiency furnaces: 90% to 98.5%
https://www.energy.gov/energysaver/furnaces-and-boilers
EDIT: We can cut the article some slack as ducting (as typically done) does account for losses which are highly variable.