By your advice, I did flip the T yesterday, but the problem is my cob bench is very long 12 feet and I have only 2-3 feet of space at the end of the bench to the wall. I tried the extendable stick, but the max of the stick is still only 8 feet. So 4 feet can’t be accessed to. This time is good because I broke the bench so I have access to it. But next year I don’t want to break the bench again. 4 feet not cleaning is a lot to cause problem. As you have said only one object fall into the duct enough to cause problem. So I finally bought another T. I found a flimsy T at Home Depot. It’s kinda small so it fits in the space.
But I found out an issue. I think this is the reason cause my RMH to have problem:
Before I had this RMH, I used a conventional wood stove heater for 1 year. Because the high heat went directly from the stove to the duct out the exhaust with out going through the cob bench, made the duct deteriorated. I used that same duct in the same place as my vertical duct for my RMH. Yesterday I saw this vertical duct had a hole, big one, 2X4 inchies, right inside the CH. That’s why the CH was so smoky, and my dad keeps burning little … The old duct I used only one more year compare to other ducts. That old one was worn out terriblely compare to other ducts. So the old one is 2 years in service and the new is one year in service, yet the old duct and the new duct of one year apart look like a 70 grandma and a 13 years old little teenager. Hight heat of the conventional wood stove done terrible to the duct.
What kind of effect would that big hole in the vertical duct done to my RMH?
