I was able to learn the hard way the duct tape doesn’t actually work to repair holes in the air duct system; Last summer, I observed that the A/C was struggling to keep up with demand.
Lowering the control unit setting simply caused the unit to run for longer cycles! It just wasn’t putting out enough cool air to maintain a comfortable indoor temperature.
I also realized that certain rooms in the apartment were cooler than others. I checked out all of these problems online plus found that the concerns were most likely caused by leaks in the ducts, and because the ductwork in my apartment is concealed inside the crawlspace, accessing the pipes is difficult plus horrible. I got my flashlight, crawled into that narrow space plus checked the ducts. I saw that there were definite leaks where the seal along the seams had dried out plus cracked. I could suppose the cool air pouring out of these spots! While my apartment was rather warmed up, the crawlspace was downright chilly. I assumed that I could repair the seams with duct tape. I have no idea why it’s called duct tape when it is worthless for the task. I spent over numerous hours wedged into a narrow space, carefully fitting the duct tape around every seam that I could access. For a couple of afternoons, the concerns were taken care of, however the apartment was a pleasant plus even temperature. The A/C wasn’t running for such long cycles plus I looked forward to lower energy bills. Then the same problems showed up again. I went back into the crawlspace plus discovered that all of the tape had peeled off.