Getting a Tight Seal with Duct Slips and Drives
If you've ever spent an afternoon wrestling with galvanized metal in a cramped attic, you know that getting duct slips and drives to seat properly is the difference between a system that hums along and one that leaks air like a sieve. It's one of those fundamental skills in the HVAC world that looks incredibly simple on paper but takes a fair bit of "feel" to master. You can have the most expensive high-efficiency furnace on the market, but if your trunk lines aren't joined tightly, you're just wasting money heating up your crawlspace. ...