You should clean your chimney annually to remove the creosote buildup in the flue. Creosote is highly flammable and can build up over time from regular wood burning. Finnmark recommends cleaning and inspection regularly even if you don’t burn much. Sometimes Chimney caps come lose and animals can make their homes in the flue or chimney chase. Every tenant has different burning habits so it is important to inspect the refractory plates for breaks and that dampers and flues are working correctly. Chimneys can be scheduled during apartment home yearly inspections. They can be cleaned any time of year, though most communities tend to clean them before and after Fall/Winter burn seasons.