Chimney Works did a fantastic install of a flue system for three Fulton EDR+3000 boilers using 10” Centrotherm Innoflue. This was for a charter school in Southeast DC. The routing was laid out ahead of time and Chimney Works nailed it down to the inch. Centrotherm is one of the few UL1738 listed polypropylene venting options for condensing appliances.
