A Level II inspection is more detailed and thorough than a Level I inspection and is the recommended inspection when conditions of use for the appliance or venting system are changing, or when a Level I inspection reveals the need for a more detailed inspection.
Several instances where a Level II inspection is specifically recommended include: Replacement of an appliance with one of dissimilar type, input rating or efficiency, prior to a flue relining, during a Real Estate transaction sale or transfer of the property, after an event likely to have caused damage to the chimney, such as a chimney fire or other sudden occurrence event.
A Level II inspection includes all of the requirements of a Level I inspection as well as the following: Inspection of accessible areas of attics, basements, and crawl spaces Accessible areas of the chimney exterior and interior Accessible portions of the appliance and chimney connection Video scanning, or other thorough method of inspection, of the flue interior Evaluation of the flue lining to determine that its material and sizing is appropriate for the appliances being served Proper clearance from combustibles in the accessible areas listed above Proper construction and condition of the chimney system in the accessible areas listed above While the Level II inspection is a rather thorough inspection and requires access to many areas of the building, it does not require removal of permanent parts of the building, such as siding, chase covers or wall coverings.