Abstract: An open-flued, liquid-fuel, leaktight, low-power individual domestic heating appliance (1), in which means for removing the burnt gases derived from the combustion, and also means for feeding in oxidant gas (air), are mounted directly on an external structure (5) , such as an outside wall, which may be a bearing wall, or the roof of a dwelling or a room to be heated, without connection to a chimney, comprises a burner pot (4) containing a catalyst (15), preferably made of refractory steel, which stabilizes the flame and which has a nominal heat output of between 50% and 100%, and preferably between 75% and 100%, of the said output of a conventional burner of the same dimensions connected to the chimney of a dwelling.

Abstract: Disclosed is a window construction for a heater, which generally has a frame and at least one panel fitted on the frame. The frame and the at least one panel are usually made of different materials having different expansion coefficients. An expansion compensator made of bimetallic material is provided to the window located between the frame and a distal portion of the at least one panel to otherwise contact the frame. The expansion compensator compensates the differential expansions occurring between the frame and the at least one panel as the heater temperature changes.