A duct pressure test measures how much air your system loses. If it's around 4-5%, sealing probably isn't worth it. Energy Star says ducts can lose 20-30% of air, but at 20% loss, sealing makes sense.
Questions this episode answers
About 4–5%.
About 20%.
20–30%.
Chapters
Another thing we do when people are not sure if they want to go ahead and do a duct sealing or not is we go ahead and send the crew out, do a pressure test on that duct system, which will give us a reading of how much air is being lost, and then at that point, the homeowner can make a decision. Yes, I want to go ahead with it. No, I don't want to go ahead with it. We've had both. Yeah, we've had both. So, you know, we've done the test before and it's come back 4 or 5%. It's not really worth it. Don't worry about it. And we've done tests before where it's come back 20%, and we need to go ahead and do a dose in this. So if you're not sure and you don't have a technician out, we will come out, hook up the machine, do a test on it, see where we are. Because according to Energy star, you know, 20 to 30% of your air is being lost from the duct systems.