MURELLE REVOLUTION 30 hybrid system art.8116100 in class A++, consisting of a condensing boiler and air-to-water heat pump. No outdoor unit and maximum compactness, constant heat pump COP up to -7?C outside temperature thanks to a heat recovery unit on the flue gas side, series operation of the two generators. Power 28 kW. Dimensions: 60x39.1 cm, height 90 cm