Abstract: This central heating apparatus for oil burner and boiler systems comprises a detachable structure disposed in the boiler furnace between the burner and the boiler; the structure comprises essentially a base frame supporting a vertical upright rigidly welded thereto and to which an assembly of stacked elements are secured by means of a common and single belt substantially aligned with the burner; this assembly comprises a pyramidal front member facing the burner, followed by a fan-like assembly of radial blades and, bearing against the upright, a perforated plate of which the holes are so punched that their material forms protruding fins directed towards the burner flame and adapted to become white hot in order to improve the combustion and eliminate soot deposits and the release of excess smoke.