Level 1

Scope : Readily accessible areas of chimney, structure, and flue; lack of obstruction or combustible deposits in flue; basic appliances installation and connection.

Degree of access required : Readily accessible portions of chimney exterior and interior; accessible portions of appliance and chimney connection

Circumstances: Annual inspection is required by Section 13.2; during routine cleaning of chimney flue; upon direct replacement of appliance with one similar type, input rating, and efficiency.

Indications: For verification of suitability of the chimney for continued service, under the same conditions and with the same appliance or appliances.

Level 2

Scope: All subjects of a level 1 inspection; proper construction and condition of accessible portions of the chimney structure and all enclosed flues; proper clearances from combustibles in accessible locations; size and suitability of flues for connected appliances.

Degree of access required: All accessible portions of the chimney exterior and interior, including areas within accessible attics, crawl spaces, and basements, and accessible portions of the appliance and chimney connection; includes inspection by video scanning or other means.

Circumstances: Upon addition or removal of one or more connected appliances or replacement of appliance with dissimilar type, input rating or, efficiency; prior to relining or replacement of flue lining; upon sale or transfer of the property; after operating malfunction or external event likely to have caused damage to the chimney.

ndications: For verification of suitability of the chimney for new or changed conditions of service; Where level 1 inspection is not sufficient to determine serviceability of the chimney.

Level 3

Scope: All subjects of Level 1 and level 2 inspection; proper construction and condition of concealed portions of chimney structure and enclosed flues; proper clearances from combustibles.

Degree of access Required: External and internal portions of chimney, including concealed areas of the building or chimney; includes removal of components of building or chimney where necessary, but only as a necessity gain access to areas that are the subject of the inspection.

Circumstances: Where necessary for the investigation of an incident that has caused damage to the chimney or building; Where hazard detected or suspected as the result of a level 1 or level 2 inspection and cannot be fully evaluated without access to concealed areas.

Indications: When construction of all or part of chimney is deemed critical to its renewed or continued use; required only for those areas that cannot be properly evaluated by a level 1 or level 2 inspection.