1. Heating with coal stove, must be installed chimney and funnels.
2. Periodically sweep the chimney, keep the chimney unobstructed, if the chimney blockage or leak, must be cleaned or repaired promptly.
3. Often open doors and windows ventilation, keep indoor air fresh.
4. Extending outside the chimney, also should be fitted with the wind plate or elbow, to prevent the wind blowing the gas back indoors.