Derek Cole explains when Aeroseal duct sealing makes sense. He walks through pressure testing to measure air leakage: if you're losing around 4-5% of air, you probably don't need it, but at 20% loss, sealing is worth considering. Energy Star says duct systems can leak 20-30% of air.
Approximately 4–5% air leakage
About 20% air leakage
20–30% of air being lost from the duct system
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, you know, 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 it. 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 system.
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