Old, older, ancient: In contrast to classic vintage cars, i.e. those vehicles that are in the cold and wet winter months, covered in dry halls and the upcoming spring waiting for you, it’s difficult for old Stoves made of cast iron. So it has and the emissions of old Bentleys, Horchs, or a Lagonda Rapide for the regulation donors are not an issue, as they are the “care of the vehicle technical cultural heritage”, as stated in the relevant rules. They are more or less sacrosanct.

Georg Küffner

editor in the Department “technology and Motor”.

F. A. Z.

is Quite different to the old furnace. Although the legislature in the Wake of the amendment of the small combustion plant Ordinance in March 2010 for older models – those that were produced before 1950, and has set in favour of a stock protection. But Be Careful. Because the only valid, if a historic furnace has remained the same since its first start up always in the same place. So, not if he could from the floor apartment in multi family house in a newly built home with a change of clothes. A request that is fulfilled by Nachkriegsöfen maybe, but only difficult from ancient specimens. Stoves so that a hundred or a hundred and fifty years old or even older.

But also do not have to stay permanently cold. Unlike there is also anecdotal evidence of the acceptance and the permission to light the fire, competent chimney Sweeps like to, you can certainly also cast iron Oldies. However, the approval hurdles are high. Thus, the legislator requires that the unique items are from a recognised body (such as TÜV Süd) are presented, which are the Furnaces, bless then, if efficiency and exhaust gas values, with a “type test”. The expense is high. The examination, including the Transport can cost several hundred euros. But what few know, it can be done differently, such as Karin Michel Berger and Wilfried Schrem from the German iron furnace Museum in Neu-Ulm, you can apply to the competent district office to be an exception, or special permit, with the note that the path on the types of testing to be associated with “inappropriate expenses” and that you will use the oven as kiln-technical heritage and not as a main heat generator, rather, it is only to cheer for.


Harmful environmental effects are unlikely, because historical Stoves are generally not Ökosünder. But there are differences. Unlike their modern colleagues who advertise rooms with large oven doors and combustion, what you Add rare and the feeding with “fat Beat” allows you to convince spaces of historical Stoves with meticulously elaborated interactions of door sizes and the Dimension of the Fire. Everything is usually smaller. Also, the designers have managed your time already, to supply the fire in the Furnaces with the combustion air, which is by no means trivial: From the bottom, air flows primarily through the grate at the embers and unburned over Logs. At 600 to 800 degrees so the wood escaping volatile gases can burn. These temperatures are too low, as that also incurred more stable flaring pyrolysis products, what is bad. Because you can’t brands escape into the chimney, they are the cause of Glanzruß, the reason some of the Fireplace. You can only be with the help of the secondary air, the valve flows through the above the grate is arranged in the air in the oven space. With you much higher combustion temperatures, which also make the stubborn Gas components of the wood brands the end.

in Terms of efficiency don’t have to hide a lot of historical Stoves also behind their modern counterparts. For sophisticated post-Heating registers are provided, which send the hot flue gases before they disappear in the chimney, in a branched maze system. This is done in the upper section of the Ovens, which gives in the case of circular models to the Whole the appearance of upright cannons. Even today, speaks to the oven, therefore, in these models from the cannon.