Actually in most cases no. With tube stoves as you shut the air back some and the secondary combustion kicks in the stove top temps will go up. Now yes if you shut it all the way down it will be lower. But with both wide open your secondary combustion isn't working and you won't get proper heat transferHaving the air down will give more heat from a specific quantity of wood but not more heat in a set amount of time, right? Burning with more air will make a hotter fire. If you keep adding wood much more heat will be produced into the home with more air. More heat will also go up the flu.