When you hire a certified chimney professional, they will inspect and clean your chimney. When conducting the chimney inspection, we are they are looking for? An inspection is included with every sweep job. The chimney professional must determine that the system is not blocked and is capable of continued use. They are also expected to determine the overall cleanliness of the venting system. This will require opening the damper and using a light, looking up the chimney and into the flue. If the chimney is dirty, it will require sweeping. This level of inspection applies to all readily accessible portions of the chimney exterior and accessible portions of the appliance and chimney connection.