Normally found in a home's utility room, these appliances usually vent vertically through the roof. Boiler, Water Heater and Furnace Flue Cleaning helps to prevent blockage and improper venting of exhaust gases. Improper venting can lead to backing up of carbon monoxide gases. This would present a hazard to occupants. Scheduled cleaning of these flues can remove, even prevent this hazard! Similar to sweeping a chimney, Madd Hatter Chimney Sweep performs this very clean and neatly!