1

My natural gas hot water tank still uses black (ABS) plastic vents. Due to a building code change, these need to be replaced with System 636 pipes. The current abs plastic pipes go to the roof. I don't want to have to make holes all the way up 3 floors to replace the pipes, so as I understand most people change to sidewall venting when changing these pipes. However, the backwall of my townhouse where the sidewall vent would go has an air conditioner, a sliding door, and some meters (see picture). My understanding is that such vents have to be a certain distance from all these items, and there just doesn't seem to be any room. Is sidewall venting possible? Any alternatives that don't involve destroying walls?

enter image description here

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.