Every few days I have to remove and drain the the rubber tube from the pressure switch to the furnace or it won't ignite. Why is water condensing in that tube? It's not a hard thing to fix-- but I ought not to have to drain that tube at all. Seems to happen more often in colder weather. I'd hate to be out of town for a few days, have the furnace not light and end up with frozen pipes!


My American Standard has a drain trap that has to be flushed every so often or it will fill up the tubing and I can hear that it is affecting the ID fan. You may have a similar problem

| improve this answer | |

Your Answer

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

Not the answer you're looking for? Browse other questions tagged or ask your own question.