A gas fire in a newly-built house? Where should you pay attention to?Houses in The United Kingdom are insulated increasingly better. Chinks in windows and doors are a thing of the past. As a result, much less outdoor air enters the house. Fitting gratings above windows and installing a mechanical ventilation system ensures that outdoor air is forced indoors. Basically, this works as follows. A mechanical ventilation system causes low pressure in the house. This low pressure ensures that outdoor air is sucked indoors through all existing openings. Gas fires have an open or closed combustion system. What does this mean, particularly for the house?Gas fire with a closed combustion systemA fireplace with a closed combustion system is sealed air tight with respect to its environment, the room in which it is placed. The combustion air is sucked in directly from outside and the combustion gasses are vented directly outside. This occurs by a double-wall channel running to the roof surface or façade, which does not involve extra structural work. The closed system has been developed to allow fireplaces to operate independently from the indoor environment. Faber has developed its own closed system, the Faber Multivent System. It ensures that the fireplace can be placed against almost any wall. The installation is simple and easy and the fireplaces have an excellent yield. They are available as stand-alone or as built-in fireplace. The fireplace burns in several minutes with splendid realistic yellow flames. The combustion is clean due to the fibre-free imitation wood blocks. Because the Faber Multivent System needs no ventilators, there is no noise nuisance.Gas fire with an open combustion systemThis fireplace uses the air from the indoor environment for combustion. The waste gasses pass outside the house through an open connection. This is due to the underpressure in the chimney; the open combustion system may only lead to the ridge of the roof. When this fireplace is placed in a mechanically-ventilated house, then exactly the opposite occurs: the chimney will serve as air supply channel and not as air removal channel. The result is that the waste gasses are vented into the house. Small wonder then that it is prohibited to place this type of fireplace in a mechanically-ventilated house, unless it has an extra aeration system and a strong ventilator. However, the disadvantage of this is that ventilators produce a great deal of noise. Note that the installation of a fireplace with an open combustion system is dependent on the location of the chimney.
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