I'm a first time homeowner and avid DIYer -- most of my projects over the last couple of years have turned out great. Today, I'm afraid that I bit off more than I could chew.
I'm installing a whole-house humidifier and read online that a jig saw would make cutting the ducts a lot easier. I knew that my A/C coil was sitting on top of my furnace but wasn't sure how much space was on either side. I cut a small hole in the duct on one side and saw that the coil was practically flush with that side, so I measured carefully the distance between the coil and the opposite duct wall, subtracted the travel of the jig saw, and .... you know where this is going. The further I cut, the more the free edge of the duct gave way and I managed to hit a coil about 3/4 of the way through making a big cut. It hissed at me for a few minutes while I cursed myself.
So, my question is: can I fix this myself? Safely?
If not, is this sort of thing easily fixed by a pro?
Here's a photo of the damage:
Thanks for any advice you can offer. I definitely learned a lesson from this one.