I have always covered my Central Boiler chimney over the summer months (since 2010), but I got lazy last spring and let it go. Yesterday I could not get a fire to start, just a faint wisp of smoke from the chimney. When I open the door great clouds of smoke escape, telling me my stack is plugged. Now toward the end of last winter I was burning some questionably unseasoned wood, so I assumed I'd creosoted up my chimney. I was planning to rent a tall step ladder and go up to unplug it, but instead tried one last thing - a drain snake. Boy, was I glad I did! We live at the edge of a woods, and wasps had made themselves quite a home up there. Luckily I was able to knock it loose from the bottom cleanout. Whew (sigh of relief). Photos show what came down. Won't neglect to do that again!
![[Hearth.com] Lesson learned - cover your chimney over the summer! [Hearth.com] Lesson learned - cover your chimney over the summer!](https://www.hearth.com/talk/data/attachments/341/341992-578eabd5a78eea7a426a0fb6b131e068.jpg?hash=bOfzOMFf9W)
![[Hearth.com] Lesson learned - cover your chimney over the summer! [Hearth.com] Lesson learned - cover your chimney over the summer!](https://www.hearth.com/talk/data/attachments/341/341993-93c1dbcdc5d60b88ee8483988a704f2d.jpg?hash=tFqoDMFP_C)
![[Hearth.com] Lesson learned - cover your chimney over the summer! [Hearth.com] Lesson learned - cover your chimney over the summer!](https://www.hearth.com/talk/data/attachments/341/341992-578eabd5a78eea7a426a0fb6b131e068.jpg?hash=bOfzOMFf9W)
![[Hearth.com] Lesson learned - cover your chimney over the summer! [Hearth.com] Lesson learned - cover your chimney over the summer!](https://www.hearth.com/talk/data/attachments/341/341993-93c1dbcdc5d60b88ee8483988a704f2d.jpg?hash=tFqoDMFP_C)