[modo_mario]

What do you mean? A fireplace can last far far longer than that timespan and it's efficiency is not tied to it's age.

[namibj]

If you don't want to replace it after 15 years, buy one that will pass emissions for the next 30 years.

[modo_mario]

And the certification will cost almost nothing and take into account everything i presume? Or will it center around the ones you can buy in a shop of the shelf like most regulation and be ridiculously prohibitive for everyone that goes off the beaten path?