Dryer vent blowing into crawl space
When a clothes dryer vent is disconnected and shoved into a subfloor hole, it pumps hot, moist air and lint directly underneath the home instead of outside. This traps damp lint in the crawlspace even days after use, creating serious moisture and fire hazards that landlords often incorrectly claim are fine.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
- 1Waiting for maintenance or landlords to handle and fix the ventilationDid this help you?
- 2Cleaning out accumulated lint from the crawl space manually using protective gearDid this help you?
- 3Using silver foil tape to reconnect flexible ductworkDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“Turns out the dryer vent is not connected to the ductwork that runs to the outside, it was just shoved into the subfloor hole. It’s been blowing the dryer air (and lint) into the crawlspace .”source ↗
“i had a similar setup in my last rental where the bathroom fan just vented into the attic and the landlord tried to tell me it was fine for ventilation purposes”source ↗
“I was going to pull the lint out but i honestly want maintenance to see it first. When I went to grab it the lint was damp and I haven’t used the dryer in a couple days 😳”source ↗