Four Feet of Lint Almost Started My Fire

There's a dryer running somewhere right now, behind a closed door, finishing its second cycle because the first one didn't quite get the job done. Nobody in that house thinks anything's wrong. The lint trap gets cleaned every time, the machine still runs, the clothes still come out dry eventually. It isn't your fault. Somebody told you that cleaning the trap was the whole job, and for most of us, nobody ever said otherwise. My dad carried a folded scrap of newspaper in his shirt pocket on every call that had anything to do with venting, gas flues included. For years I thought it was just an old habit of his, something left over from a different generation of tools. It wasn't a habit. It was a test, and it told him more in ten seconds than most people ever learn about their own dryer. I'm Hank. Forty-eight years of plumbing and carpentry calls in and around one Ohio county, and more dryer vents pulled apart than I could count, including the one behind my own machine the year I almost didn't catch it in time. In this one: 1 — the lint trap: what it actually catches, and what slips right through 2 — the warning signs: a hot cabinet, a damp room, a second cycle you shouldn't need 3 — the duct material: rigid metal versus the crushable foil kind 4 — the length and the elbows: why a longer run clogs faster than you'd think 5 — the real cleaning: brush and vacuum, both ends, past where your arm reaches 6 — the outside cap: paint, lint, and the birds that love it 7 — how often, and the three things to check every single time 8 — what my dad kept folded in his shirt pocket for this, which nobody carries anymore That eighth one is the trick. Run the dryer, walk outside to the vent cap, and hold your bare hand or a sheet of paper in front of the opening. Strong, steady warm air means you're clear. A weak puff means lint is sitting somewhere in that duct right now. That's the old shop trick, and it takes about ten seconds. Honest, said plainly in the video: unplug the dryer before you touch the duct, and if you've got a gas dryer, that gas line is not something to touch yourself — call a licensed pro for that part. If you'd rather just run the trap and call it done, I understand, I just want you to know what that choice costs you. Did your family ever have a trick like this, something nobody wrote down, that you only learned because somebody showed you once? Tell me about him. I read every one.