Fireplace insert – with or without external supply of fresh air?

For fuel burning in the fireplace oxygen is needed, the fire consumed for heating air. What is removed, it must also be fed back somewhere. It also applies in this case. To ensure proper operation of the fireplace while protecting the residents, must provide adequate ventilation.

The issue of fresh air is always current with chimneys. In the past, the natural leaks around windows and doors for the air supply to the installation of a chimney space were sufficient so that no special measures were necessary.
That has changed. Density design with modern low-energy buildings can be no accidental openings in the building envelope. The manufacturer of fireplace inserts and stoves have responded to this new challenge. Modern wood heaters can be connected to an external air duct to secure the necessary combustion air.
This air duct is supplied at the top by an air-exhaust-chimney. Air exhaust chimney is a specialchimney, which is next to the Flue outlet also has its own Lüftungszug available at the Zuluftrohrleitung is connected from the stove or fireplace insert. Specialized companies guarantee you a professional chimney.

Nowadays you can find in almost every chimney manufacturers a solution for room sealed wood combustion. Partly it is well-crafted systems, for example, allow a preheat the combustion air. This is important for effective combustion in the fireplace insert. The preheated combustion air mixes better with the wood gases that escape from wood combustion in the combustion chamber, and allowing her perfect burnout before escaping into the chimney. The result is a high efficiency of the fireplace insert and low emissions.

Another possibility is to supply the combustion air with an air duct from the basement or outside. But that is sometimes associated with more complex structural measures, and of course with the breaking of the thermal envelope of the house. The air must be the room that serves the fireplace with combustion air can be fed back somewhere. Furthermore, protection against pests are provided.

In deciding whether the fireplace can be operated in the given case, with or without external air supply, only the instructions of the competent chimney sweep are essential. So the question you should immediately move into the planning phase of the fireplace with house building and construction, or consult the project with the chimney sweep in advance.This is responsible for final inspection of the fireplace and the hearth operators can save a lot of subsequent actions.