Annual service will remove soot deposits and keep the deterioration process to a minimum. In metal chimneys the interior lining is constructed of stainless steel, which will not rust, but can corrode from the oil soot’s sulfuric acid reaction. This corrosion causes small pinholes to form which ruin the integrity of the liner. When these pinholes form, the liner is unable to properly contain the byproducts of combustion. When a clay lining in a masonry chimney flakes, or a metal chimney or lining system corrodes, they are unable to contain the heat and the flue gases, thus creating a potential hazard. When we perform the annual inspection and sweeping of your oil chimney, you can typically expect to see the following: There will likely be some equipment set-up. Steps will be taken to seal off areas which may otherwise allow soot to enter your home. The pipe connecting the oil furnace to the chimney will be disconnected, swept and reconnected. An inspection of the exterior of the chimney will be made. The chimney/flue will be swept if needed, and the interior of the chimney will be inspected to determine its soundness. Any loosened soot deposits will be removed. When service has been completed, the furnace will be restarted for you. When our technician has completed the evaluation, he will recommend any corrective actions that might be required and provide you with a written inspection report of said findings.