Old log burning stove

[dumper]

I have a 35 year old stove believe it’s a county hitop, will there be any benefit in replacing with a new model, will I see more output or less fuel used, or am I better just leaving it 

[openspaceman]

11 hours ago, dumper said:

I have a 35 year old stove believe it’s a county hitop, will there be any benefit in replacing with a new model, will I see more output or less fuel used, or am I better just leaving it 

Interesting, if when it's running you see no smoke then you're getting all the heat of combustion out of the log, smoke is unburned fuel.

 

So as long as the flue temperature is around 150C and no air leaks then I'd guess no benefit. Air leaks and excess air are the biggest wasters of wood heat because of the extra mass flow up the chimney.

 

However the Jotul 602 I replaced with a morso 11 was less efficient, wasted heat up the chimney and smoked a fair amount of the time, especially after reloading.

 

The modern fires with firebrick insulating combustion chambers burn hotter faster, so unless I cock up my fire is smoke free withing about 15 minutes of top lighting.