1.99K viewsMay 14, 2023mechanical 0 mikerv May 11, 2023 0 Comments I was told today that venting needs to always go up – wondering if this is true or not or if you can route it similar to water lines? builderkp Answered question May 13, 2023 1 AnswerActiveVotedNewestOldest 0 builderkp Posted May 13, 2023 0 Comments To my knowledge Mike yes but I think others may be able to weigh in. builderkp Answered question May 13, 2023 Register or LoginPlease login or register to continue