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Ferno Closed system fireplaces are unparalleled as a source of energy and heat. Being cast iron these clean and economical burning models ensure a high degree of radiant heat and the well designed convection plates enhance the airflow of heated air.

The advanced combustion and air control system offers precise burning. The capacity of heat output is regulated with the use of three air controls. The primary air supply, where air passes through the riddling grate for the initial combustion, is controlled using the lower air control. The secondary air is controlled using the upper air control. This allows for air to flow over the glass ensuring the perfect airwash system for an optimal fire presentation at all times. The third air inlet situated below the ash pan, provides a constant, pre- heated air supply to the combustion just above the fire.