Cut old pvc exhaust pipe apart at the wall near where it exits the basement. Re-piped the exhaust from outside in to where the horizontal run begins at main beam. Installed three new 3†pvc 90’s and one new 3†45. Cleaned and glued fittings taking care to make sure they didn’t push apart. Using an s-slip I shimmed the plenum above humidifier to cause the upper portion of the humidifier body to lean back slightly. This in turn leveled the front of the humidifier housing. Ran the humidifier for several minutes to check for any leaks and found the water to only be running into drain as it should. Thank you for choosing Black-Haak Heating. Please take a moment to fill out our online survey.