Chimney sweeps are operating, as venting systems for coal, heating oil, natural gas, wood and pellet burning appliances need to be maintained. There is a greater understanding of the dangers of flue deposits and carbon monoxide and gases from combustion. The standard chimney brush is still used, along with more modern tools (such as vacuums, cameras and special chimney cleaning tools). Most sweeps are done from the bottom of the chimney, rather than the top, to prevent the dispersion of dust and debris and because it is safer for the chimney sweep to do the sweeping from this position. Inspection may be done from the bottom or top, or both if accessible. Hants Chimney Sweep is professionals, and is trained to diagnose and repair hazards along with maintenance such as removal of flammable creosote, firebox and damper repair, and smoke chamber repair. Some sweeps also offer more complicated repairs such as flue repair and relining, chimney pot replace.