Domestic coal-fired furnace maintenance: 1, do not let go during the non-heating water in the system, so that the entire system remains full of water; 2, to prevent erosion stoves damp, the furnace should be kept dry, after the withdrawal of soot and smoke fire divisible oil, fill the cavity with a dry ashes; 3, holding furnace ventilation around. Do not use plastic sheeting wrapped stoves; 4, always clean, wipe the cooking plate, furnace, keep it clean and tidy to prevent corrosion; 5, the furnace lining mud if damaged, can repair itself refractory cement.