A week back we noticed our rug in front of the Furnace was soaked. Upon investigation I found that the leak appeared to be coming from a Vent Coupling (Vent Elbow) that leads out to our roof. I tightened the clamps on the Vent Coupling and the leak appeared to be resolved. From the rust and damage at the bottom of the Furnace it appears that the leak had been occurring for a long time. The leak appeared to be worse following a rain (cold weather and water coming in from the vent leading to the roof perhaps?), and when we were running the Furnace (extra condensation occurring?).
One big question is: Did the HVAC installers leave the vent coupling loose on purpose? In order to release some water so it didn't clog the exhaust for example? Upon removing the Vent Coupling there was a little water, but less than expected -- there was still plenty of ventilation room to exhaust to the roof.
The unit appears to be using more gas than I would expect, is the extra condensation filtering into that Vent Coupling something I should be concerned with from a security/safety standpoint? Is it safe to wait until June/July to have the furnace inspected?
Here are some details to help: Unit is a Bryant 2 Stage PWM 96 - Model number 926TA42060V17A-B. Photos for reference are: Vent Coupling, with loosened clamps